();
+ }
+
+ // 检查缓存中是否已有该号码对应的联系人
+ if(sContactCache.containsKey(phoneNumber)) {
+ return sContactCache.get(phoneNumber);
+ }
+
+ // 替换SQL查询条件中的占位符，转换电话号码为标准格式
+ String selection = CALLER_ID_SELECTION.replace("+",
+ PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
+
+ // 执行查询，获取联系人姓名
+ Cursor cursor = context.getContentResolver().query(
+ Data.CONTENT_URI,
+ new String [] { Phone.DISPLAY_NAME },
+ selection,
+ new String[] { phoneNumber },
+ null);
+
+ // 处理查询结果
+ if (cursor != null && cursor.moveToFirst()) {
+ try {
+ // 获取联系人姓名并存入缓存
+ String name = cursor.getString(0);
+ sContactCache.put(phoneNumber, name);
+ return name;
+ } catch (IndexOutOfBoundsException e) {
+ // 处理索引越界异常
+ Log.e(TAG, " Cursor get string error " + e.toString());
+ return null;
+ } finally {
+ // 确保关闭游标，释放资源
+ cursor.close();
+ }
+ } else {
+ // 未找到匹配的联系人
+ Log.d(TAG, "No contact matched with number:" + phoneNumber);
+ return null;
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/data/Notes.java b/app/src/main/java/net/micode/notes/data/Notes.java
new file mode 100644
index 0000000..0895b55
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/data/Notes.java
@@ -0,0 +1,361 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: Notes.java
+ * 描述: 定义了便签应用的核心数据结构和常量
+ * 作用: 提供数据库表结构的定义、内容提供者URI、系统文件夹ID等常量，是应用数据层的核心定义文件
+ */
+package net.micode.notes.data;
+
+import android.net.Uri;
+
+/**
+ * 便签数据定义类
+ *
+ * 包含了便签应用所有的数据常量定义，包括：
+ * - 内容提供者权限名称
+ * - 便签和文件夹类型
+ * - 系统文件夹ID
+ * - Intent传递参数的键名
+ * - 小部件类型
+ * - 数据库表列名
+ * - 内容URI
+ */
+public class Notes {
+ /** 内容提供者的权限名称 */
+ public static final String AUTHORITY = "micode_notes";
+
+ /** 日志标签 */
+ public static final String TAG = "Notes";
+
+ /** 便签类型：普通便签 */
+ public static final int TYPE_NOTE = 0;
+
+ /** 便签类型：文件夹 */
+ public static final int TYPE_FOLDER = 1;
+
+ /** 便签类型：系统文件夹 */
+ public static final int TYPE_SYSTEM = 2;
+
+ /**
+ * Following IDs are system folders' identifiers
+ * {@link Notes#ID_ROOT_FOLDER } is default folder
+ * {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
+ * {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
+ */
+ /** 系统文件夹ID：根文件夹（默认文件夹） */
+ public static final int ID_ROOT_FOLDER = 0;
+
+ /** 系统文件夹ID：临时文件夹（不属于任何文件夹的便签） */
+ public static final int ID_TEMPARAY_FOLDER = -1;
+
+ /** 系统文件夹ID：通话记录文件夹 */
+ public static final int ID_CALL_RECORD_FOLDER = -2;
+
+ /** 系统文件夹ID：回收站文件夹 */
+ public static final int ID_TRASH_FOLER = -3;
+
+ /** Intent参数：提醒日期 */
+ public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
+
+ /** Intent参数：背景颜色ID */
+ public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
+
+ /** Intent参数：小部件ID */
+ public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
+
+ /** Intent参数：小部件类型 */
+ public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
+
+ /** Intent参数：文件夹ID */
+ public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
+
+ /** Intent参数：通话日期 */
+ public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
+
+ /** 小部件类型：无效 */
+ public static final int TYPE_WIDGET_INVALIDE = -1;
+
+ /** 小部件类型：2x小部件 */
+ public static final int TYPE_WIDGET_2X = 0;
+
+ /** 小部件类型：4x小部件 */
+ public static final int TYPE_WIDGET_4X = 1;
+
+ /**
+ * 数据常量类
+ * 定义了便签内容类型的MIME类型常量
+ */
+ public static class DataConstants {
+ /** 文本便签的MIME类型 */
+ public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
+
+ /** 通话记录便签的MIME类型 */
+ public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
+ }
+
+ /**
+ * Uri to query all notes and folders
+ */
+ /** 查询所有便签和文件夹的URI */
+ public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
+
+ /**
+ * Uri to query data
+ */
+ /** 查询便签数据的URI */
+ public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
+
+ /**
+ * 便签表列名接口
+ * 定义了note表中所有列的名称和类型
+ */
+ public interface NoteColumns {
+ /**
+ * The unique ID for a row
+ * Type: INTEGER (long)
+ */
+ public static final String ID = "_id";
+
+ /**
+ * The parent's id for note or folder
+ * Type: INTEGER (long)
+ */
+ public static final String PARENT_ID = "parent_id";
+
+ /**
+ * Created data for note or folder
+ * Type: INTEGER (long)
+ */
+ public static final String CREATED_DATE = "created_date";
+
+ /**
+ * Latest modified date
+ * Type: INTEGER (long)
+ */
+ public static final String MODIFIED_DATE = "modified_date";
+
+
+ /**
+ * Alert date
+ * Type: INTEGER (long)
+ */
+ public static final String ALERTED_DATE = "alert_date";
+
+ /**
+ * Folder's name or text content of note
+ * Type: TEXT
+ */
+ public static final String SNIPPET = "snippet";
+
+ /**
+ * Note's widget id
+ * Type: INTEGER (long)
+ */
+ public static final String WIDGET_ID = "widget_id";
+
+ /**
+ * Note's widget type
+ * Type: INTEGER (long)
+ */
+ public static final String WIDGET_TYPE = "widget_type";
+
+ /**
+ * Note's background color's id
+ * Type: INTEGER (long)
+ */
+ public static final String BG_COLOR_ID = "bg_color_id";
+
+ /**
+ * For text note, it doesn't has attachment, for multi-media
+ * note, it has at least one attachment
+ * Type: INTEGER
+ */
+ public static final String HAS_ATTACHMENT = "has_attachment";
+
+ /**
+ * Folder's count of notes
+ * Type: INTEGER (long)
+ */
+ public static final String NOTES_COUNT = "notes_count";
+
+ /**
+ * The file type: folder or note
+ * Type: INTEGER
+ */
+ public static final String TYPE = "type";
+
+ /**
+ * The last sync id
+ * Type: INTEGER (long)
+ */
+ public static final String SYNC_ID = "sync_id";
+
+ /**
+ * Sign to indicate local modified or not
+ * Type: INTEGER
+ */
+ public static final String LOCAL_MODIFIED = "local_modified";
+
+ /**
+ * Original parent id before moving into temporary folder
+ * Type : INTEGER
+ */
+ public static final String ORIGIN_PARENT_ID = "origin_parent_id";
+
+ /**
+ * The gtask id
+ * Type : TEXT
+ */
+ public static final String GTASK_ID = "gtask_id";
+
+ /**
+ * The version code
+ * Type : INTEGER (long)
+ */
+ public static final String VERSION = "version";
+ }
+
+ /**
+ * 数据表列名接口
+ * 定义了data表中所有列的名称和类型
+ */
+ public interface DataColumns {
+ /**
+ * The unique ID for a row
+ * Type: INTEGER (long)
+ */
+ public static final String ID = "_id";
+
+ /**
+ * The MIME type of the item represented by this row.
+ * Type: Text
+ */
+ public static final String MIME_TYPE = "mime_type";
+
+ /**
+ * The reference id to note that this data belongs to
+ * Type: INTEGER (long)
+ */
+ public static final String NOTE_ID = "note_id";
+
+ /**
+ * Created data for note or folder
+ * Type: INTEGER (long)
+ */
+ public static final String CREATED_DATE = "created_date";
+
+ /**
+ * Latest modified date
+ * Type: INTEGER (long)
+ */
+ public static final String MODIFIED_DATE = "modified_date";
+
+ /**
+ * Data's content
+ * Type: TEXT
+ */
+ public static final String CONTENT = "content";
+
+
+ /**
+ * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+ * integer data type
+ * Type: INTEGER
+ */
+ public static final String DATA1 = "data1";
+
+ /**
+ * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+ * integer data type
+ * Type: INTEGER
+ */
+ public static final String DATA2 = "data2";
+
+ /**
+ * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+ * TEXT data type
+ * Type: TEXT
+ */
+ public static final String DATA3 = "data3";
+
+ /**
+ * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+ * TEXT data type
+ * Type: TEXT
+ */
+ public static final String DATA4 = "data4";
+
+ /**
+ * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+ * TEXT data type
+ * Type: TEXT
+ */
+ public static final String DATA5 = "data5";
+ }
+
+ /**
+ * 文本便签类
+ * 定义了文本便签特有的数据结构和常量
+ */
+ public static final class TextNote implements DataColumns {
+ /**
+ * Mode to indicate the text in check list mode or not
+ * Type: Integer 1:check list mode 0: normal mode
+ */
+ public static final String MODE = DATA1;
+
+ /** 便签模式：清单模式（可勾选的项目列表） */
+ public static final int MODE_CHECK_LIST = 1;
+
+ /** 文本便签内容类型：多条记录 */
+ public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
+
+ /** 文本便签内容类型：单条记录 */
+ public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
+
+ /** 文本便签内容URI */
+ public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
+ }
+
+ /**
+ * 通话记录便签类
+ * 定义了通话记录便签特有的数据结构和常量
+ */
+ public static final class CallNote implements DataColumns {
+ /**
+ * Call date for this record
+ * Type: INTEGER (long)
+ */
+ public static final String CALL_DATE = DATA1;
+
+ /**
+ * Phone number for this record
+ * Type: TEXT
+ */
+ public static final String PHONE_NUMBER = DATA3;
+
+ /** 通话记录便签内容类型：多条记录 */
+ public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
+
+ /** 通话记录便签内容类型：单条记录 */
+ public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
+
+ /** 通话记录便签内容URI */
+ public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java b/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java
new file mode 100644
index 0000000..57152d0
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java
@@ -0,0 +1,498 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesDatabaseHelper.java
+ * 描述: 便签应用的数据库帮助类，负责创建和管理SQLite数据库
+ * 作用: 提供数据库的创建、升级和表结构管理，是应用数据持久化的核心组件
+ */
+package net.micode.notes.data;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.Log;
+
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+
+/**
+ * 便签数据库帮助类
+ *
+ * 继承自SQLiteOpenHelper，负责便签应用数据库的创建、升级和管理
+ * 提供了便签表和数据表的创建与管理，以及各种数据库触发器的定义
+ * 使用单例模式确保全局只有一个数据库连接实例
+ */
+public class NotesDatabaseHelper extends SQLiteOpenHelper {
+ /** 数据库名称 */
+ private static final String DB_NAME = "note.db";
+
+ /** 数据库版本号 */
+ private static final int DB_VERSION = 4;
+
+ /**
+ * 表名常量接口
+ * 定义了数据库中的表名
+ */
+ public interface TABLE {
+ /** 便签表名 */
+ public static final String NOTE = "note";
+
+ /** 数据表名 */
+ public static final String DATA = "data";
+ }
+
+ /** 日志标签 */
+ private static final String TAG = "NotesDatabaseHelper";
+
+ /** 单例实例 */
+ private static NotesDatabaseHelper mInstance;
+
+ /**
+ * 创建便签表的SQL语句
+ * 定义了便签表的结构，包括各列名和默认值
+ */
+ private static final String CREATE_NOTE_TABLE_SQL =
+ "CREATE TABLE " + TABLE.NOTE + "(" +
+ NoteColumns.ID + " INTEGER PRIMARY KEY," +
+ NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+ NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+ NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
+ NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
+ NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
+ NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
+ ")";
+
+ /**
+ * 创建数据表的SQL语句
+ * 定义了数据表的结构，用于存储便签的具体内容
+ */
+ private static final String CREATE_DATA_TABLE_SQL =
+ "CREATE TABLE " + TABLE.DATA + "(" +
+ DataColumns.ID + " INTEGER PRIMARY KEY," +
+ DataColumns.MIME_TYPE + " TEXT NOT NULL," +
+ DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
+ NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+ NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+ DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
+ DataColumns.DATA1 + " INTEGER," +
+ DataColumns.DATA2 + " INTEGER," +
+ DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
+ DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
+ DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
+ ")";
+
+ /**
+ * 创建数据表NOTE_ID索引的SQL语句
+ * 用于优化按便签ID查询数据的性能
+ */
+ private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
+ "CREATE INDEX IF NOT EXISTS note_id_index ON " +
+ TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";
+
+ /**
+ * 增加文件夹便签计数的触发器
+ * 当便签移动到某个文件夹时，自动增加该文件夹的便签计数
+ */
+ private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
+ "CREATE TRIGGER increase_folder_count_on_update "+
+ " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
+ " BEGIN " +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
+ " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
+ " END";
+
+ /**
+ * 减少文件夹便签计数的触发器
+ * 当便签从某个文件夹移出时，自动减少该文件夹的便签计数
+ */
+ private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
+ "CREATE TRIGGER decrease_folder_count_on_update " +
+ " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
+ " BEGIN " +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
+ " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
+ " AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
+ " END";
+
+ /**
+ * 增加文件夹便签计数的触发器
+ * 当在某个文件夹中插入新便签时，自动增加该文件夹的便签计数
+ */
+ private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
+ "CREATE TRIGGER increase_folder_count_on_insert " +
+ " AFTER INSERT ON " + TABLE.NOTE +
+ " BEGIN " +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
+ " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
+ " END";
+
+ /**
+ * 减少文件夹便签计数的触发器
+ * 当从某个文件夹中删除便签时，自动减少该文件夹的便签计数
+ */
+ private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
+ "CREATE TRIGGER decrease_folder_count_on_delete " +
+ " AFTER DELETE ON " + TABLE.NOTE +
+ " BEGIN " +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
+ " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
+ " AND " + NoteColumns.NOTES_COUNT + ">0;" +
+ " END";
+
+ /**
+ * 更新便签内容的触发器
+ * 当插入类型为NOTE的数据时，自动更新对应便签的摘要内容
+ */
+ private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
+ "CREATE TRIGGER update_note_content_on_insert " +
+ " AFTER INSERT ON " + TABLE.DATA +
+ " WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+ " BEGIN" +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
+ " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
+ " END";
+
+ /**
+ * 更新便签内容的触发器
+ * 当更新类型为NOTE的数据时，自动更新对应便签的摘要内容
+ */
+ private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
+ "CREATE TRIGGER update_note_content_on_update " +
+ " AFTER UPDATE ON " + TABLE.DATA +
+ " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+ " BEGIN" +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
+ " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
+ " END";
+
+ /**
+ * 更新便签内容的触发器
+ * 当删除类型为NOTE的数据时，自动清空对应便签的摘要内容
+ */
+ private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
+ "CREATE TRIGGER update_note_content_on_delete " +
+ " AFTER delete ON " + TABLE.DATA +
+ " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+ " BEGIN" +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.SNIPPET + "=''" +
+ " WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
+ " END";
+
+ /**
+ * 删除便签相关数据的触发器
+ * 当删除便签时，自动删除与该便签关联的所有数据
+ */
+ private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
+ "CREATE TRIGGER delete_data_on_delete " +
+ " AFTER DELETE ON " + TABLE.NOTE +
+ " BEGIN" +
+ " DELETE FROM " + TABLE.DATA +
+ " WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
+ " END";
+
+ /**
+ * 删除文件夹内便签的触发器
+ * 当删除文件夹时，自动删除该文件夹内的所有便签
+ */
+ private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
+ "CREATE TRIGGER folder_delete_notes_on_delete " +
+ " AFTER DELETE ON " + TABLE.NOTE +
+ " BEGIN" +
+ " DELETE FROM " + TABLE.NOTE +
+ " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
+ " END";
+
+ /**
+ * 移动文件夹内便签到回收站的触发器
+ * 当文件夹被移动到回收站时，自动将该文件夹内的所有便签也移动到回收站
+ */
+ private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
+ "CREATE TRIGGER folder_move_notes_on_trash " +
+ " AFTER UPDATE ON " + TABLE.NOTE +
+ " WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
+ " BEGIN" +
+ " UPDATE " + TABLE.NOTE +
+ " SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
+ " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
+ " END";
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ */
+ public NotesDatabaseHelper(Context context) {
+ super(context, DB_NAME, null, DB_VERSION);
+ }
+
+ /**
+ * 创建便签表
+ *
+ * @param db 数据库对象
+ */
+ public void createNoteTable(SQLiteDatabase db) {
+ // 执行创建便签表的SQL语句
+ db.execSQL(CREATE_NOTE_TABLE_SQL);
+ // 重新创建便签表的触发器
+ reCreateNoteTableTriggers(db);
+ // 创建系统文件夹
+ createSystemFolder(db);
+ Log.d(TAG, "note table has been created");
+ }
+
+ /**
+ * 重新创建便签表的触发器
+ * 先删除已存在的触发器，然后重新创建
+ *
+ * @param db 数据库对象
+ */
+ private void reCreateNoteTableTriggers(SQLiteDatabase db) {
+ // 删除已存在的触发器
+ db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
+ db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
+ db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
+ db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
+ db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
+ db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
+ db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
+
+ // 创建新的触发器
+ db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
+ db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
+ db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
+ db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
+ db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
+ db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
+ db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
+ }
+
+ /**
+ * 创建系统文件夹
+ * 包括通话记录文件夹、根文件夹、临时文件夹和回收站文件夹
+ *
+ * @param db 数据库对象
+ */
+ private void createSystemFolder(SQLiteDatabase db) {
+ ContentValues values = new ContentValues();
+
+ /**
+ * call record foler for call notes
+ */
+ // 创建通话记录文件夹
+ values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
+ values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ db.insert(TABLE.NOTE, null, values);
+
+ /**
+ * root folder which is default folder
+ */
+ // 创建根文件夹（默认文件夹）
+ values.clear();
+ values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
+ values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ db.insert(TABLE.NOTE, null, values);
+
+ /**
+ * temporary folder which is used for moving note
+ */
+ // 创建临时文件夹（用于移动便签）
+ values.clear();
+ values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
+ values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ db.insert(TABLE.NOTE, null, values);
+
+ /**
+ * create trash folder
+ */
+ // 创建回收站文件夹
+ values.clear();
+ values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
+ values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ db.insert(TABLE.NOTE, null, values);
+ }
+
+ /**
+ * 创建数据表
+ *
+ * @param db 数据库对象
+ */
+ public void createDataTable(SQLiteDatabase db) {
+ // 执行创建数据表的SQL语句
+ db.execSQL(CREATE_DATA_TABLE_SQL);
+ // 重新创建数据表的触发器
+ reCreateDataTableTriggers(db);
+ // 创建数据表的索引
+ db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
+ Log.d(TAG, "data table has been created");
+ }
+
+ /**
+ * 重新创建数据表的触发器
+ * 先删除已存在的触发器，然后重新创建
+ *
+ * @param db 数据库对象
+ */
+ private void reCreateDataTableTriggers(SQLiteDatabase db) {
+ // 删除已存在的触发器
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
+
+ // 创建新的触发器
+ db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
+ db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
+ db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
+ }
+
+ /**
+ * 获取NotesDatabaseHelper的单例实例
+ *
+ * @param context 上下文环境
+ * @return NotesDatabaseHelper的单例实例
+ */
+ static synchronized NotesDatabaseHelper getInstance(Context context) {
+ if (mInstance == null) {
+ mInstance = new NotesDatabaseHelper(context);
+ }
+ return mInstance;
+ }
+
+ /**
+ * 数据库创建回调方法
+ * 当数据库首次创建时调用
+ *
+ * @param db 数据库对象
+ */
+ @Override
+ public void onCreate(SQLiteDatabase db) {
+ createNoteTable(db);
+ createDataTable(db);
+ }
+
+ /**
+ * 数据库升级回调方法
+ * 当数据库版本升级时调用
+ *
+ * @param db 数据库对象
+ * @param oldVersion 旧版本号
+ * @param newVersion 新版本号
+ */
+ @Override
+ public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+ boolean reCreateTriggers = false;
+ boolean skipV2 = false;
+
+ // 从版本1升级到版本2
+ if (oldVersion == 1) {
+ upgradeToV2(db);
+ skipV2 = true; // 这个升级包含了从v2到v3的升级
+ oldVersion++;
+ }
+
+ // 从版本2升级到版本3
+ if (oldVersion == 2 && !skipV2) {
+ upgradeToV3(db);
+ reCreateTriggers = true;
+ oldVersion++;
+ }
+
+ // 从版本3升级到版本4
+ if (oldVersion == 3) {
+ upgradeToV4(db);
+ oldVersion++;
+ }
+
+ // 如果需要，重新创建触发器
+ if (reCreateTriggers) {
+ reCreateNoteTableTriggers(db);
+ reCreateDataTableTriggers(db);
+ }
+
+ // 验证升级是否成功
+ if (oldVersion != newVersion) {
+ throw new IllegalStateException("Upgrade notes database to version " + newVersion
+ + "fails");
+ }
+ }
+
+ /**
+ * 升级到版本2
+ * 完全重建数据库表
+ *
+ * @param db 数据库对象
+ */
+ private void upgradeToV2(SQLiteDatabase db) {
+ // 删除旧表
+ db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
+ db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
+ // 创建新表
+ createNoteTable(db);
+ createDataTable(db);
+ }
+
+ /**
+ * 升级到版本3
+ * 添加Google Tasks ID列和回收站文件夹
+ *
+ * @param db 数据库对象
+ */
+ private void upgradeToV3(SQLiteDatabase db) {
+ // 删除未使用的触发器
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete");
+ db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
+ // 添加Google Tasks ID列
+ db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
+ + " TEXT NOT NULL DEFAULT ''");
+ // 添加回收站系统文件夹
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
+ values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ db.insert(TABLE.NOTE, null, values);
+ }
+
+ /**
+ * 升级到版本4
+ * 添加版本列
+ *
+ * @param db 数据库对象
+ */
+ private void upgradeToV4(SQLiteDatabase db) {
+ // 添加版本列
+ db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
+ + " INTEGER NOT NULL DEFAULT 0");
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/data/NotesProvider.java b/app/src/main/java/net/micode/notes/data/NotesProvider.java
new file mode 100644
index 0000000..8f65e2f
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/data/NotesProvider.java
@@ -0,0 +1,431 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesProvider.java
+ * 描述: 便签应用的内容提供者，负责管理便签数据的访问
+ * 作用: 为应用程序和其他应用提供便签数据的统一访问接口，实现数据的增删改查操作
+ */
+package net.micode.notes.data;
+
+
+import android.app.SearchManager;
+import android.content.ContentProvider;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Intent;
+import android.content.UriMatcher;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.net.Uri;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.NotesDatabaseHelper.TABLE;
+
+/**
+ * 便签内容提供者类
+ *
+ * 继承自ContentProvider，负责处理对便签数据的访问请求
+ * 实现了标准的CRUD操作（创建、读取、更新、删除）
+ * 支持便签搜索功能
+ */
+public class NotesProvider extends ContentProvider {
+ /** URI匹配器，用于匹配请求的URI类型 */
+ private static final UriMatcher mMatcher;
+
+ /** 数据库帮助类实例 */
+ private NotesDatabaseHelper mHelper;
+
+ /** 日志标签 */
+ private static final String TAG = "NotesProvider";
+
+ /** 便签表URI类型 */
+ private static final int URI_NOTE = 1;
+ /** 单个便签项URI类型 */
+ private static final int URI_NOTE_ITEM = 2;
+ /** 数据表URI类型 */
+ private static final int URI_DATA = 3;
+ /** 单个数据项URI类型 */
+ private static final int URI_DATA_ITEM = 4;
+
+ /** 搜索URI类型 */
+ private static final int URI_SEARCH = 5;
+ /** 搜索建议URI类型 */
+ private static final int URI_SEARCH_SUGGEST = 6;
+
+ // 静态初始化块，配置URI匹配器
+ static {
+ mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
+ // 添加各种URI匹配规则
+ mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
+ mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
+ mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA);
+ mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM);
+ mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH);
+ mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST);
+ mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST);
+ }
+
+ /**
+ * 搜索结果的投影列
+ * x'0A'表示SQLite中的'\n'字符。为了在搜索结果中显示更多信息，
+ * 我们会删除标题和内容中的'\n'和空格。
+ */
+ private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
+ + NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+ + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
+ + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + ","
+ + R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+ + "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+ + "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
+
+ /**
+ * 便签片段搜索查询SQL
+ * 用于搜索便签内容，排除回收站中的便签和非便签类型的项目
+ */
+ private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
+ + " FROM " + TABLE.NOTE
+ + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
+ + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
+ + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
+
+ /**
+ * 内容提供者初始化
+ *
+ * @return 初始化是否成功
+ */
+ @Override
+ public boolean onCreate() {
+ // 获取数据库帮助类实例
+ mHelper = NotesDatabaseHelper.getInstance(getContext());
+ return true;
+ }
+
+ /**
+ * 查询数据
+ *
+ * @param uri 请求的URI
+ * @param projection 要返回的列
+ * @param selection 查询条件
+ * @param selectionArgs 查询条件参数
+ * @param sortOrder 排序方式
+ * @return 查询结果游标
+ */
+ @Override
+ public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
+ String sortOrder) {
+ Cursor c = null;
+ // 获取可读数据库
+ SQLiteDatabase db = mHelper.getReadableDatabase();
+ String id = null;
+
+ // 根据URI类型执行不同的查询操作
+ switch (mMatcher.match(uri)) {
+ case URI_NOTE:
+ // 查询便签表
+ c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
+ sortOrder);
+ break;
+ case URI_NOTE_ITEM:
+ // 查询单个便签项
+ id = uri.getPathSegments().get(1);
+ c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
+ + parseSelection(selection), selectionArgs, null, null, sortOrder);
+ break;
+ case URI_DATA:
+ // 查询数据表
+ c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
+ sortOrder);
+ break;
+ case URI_DATA_ITEM:
+ // 查询单个数据项
+ id = uri.getPathSegments().get(1);
+ c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
+ + parseSelection(selection), selectionArgs, null, null, sortOrder);
+ break;
+ case URI_SEARCH:
+ case URI_SEARCH_SUGGEST:
+ // 处理搜索和搜索建议请求
+ if (sortOrder != null || projection != null) {
+ throw new IllegalArgumentException(
+ "do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
+ }
+
+ // 获取搜索字符串
+ String searchString = null;
+ if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
+ if (uri.getPathSegments().size() > 1) {
+ searchString = uri.getPathSegments().get(1);
+ }
+ } else {
+ searchString = uri.getQueryParameter("pattern");
+ }
+
+ // 如果搜索字符串为空，则返回null
+ if (TextUtils.isEmpty(searchString)) {
+ return null;
+ }
+
+ // 执行搜索查询
+ try {
+ searchString = String.format("%%%s%%", searchString); // 添加通配符以进行模糊匹配
+ c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
+ new String[] { searchString });
+ } catch (IllegalStateException ex) {
+ Log.e(TAG, "got exception: " + ex.toString());
+ }
+ break;
+ default:
+ throw new IllegalArgumentException("Unknown URI " + uri);
+ }
+
+ // 设置通知URI，当数据变化时通知观察者
+ if (c != null) {
+ c.setNotificationUri(getContext().getContentResolver(), uri);
+ }
+ return c;
+ }
+
+ /**
+ * 插入数据
+ *
+ * @param uri 请求的URI
+ * @param values 要插入的值
+ * @return 插入后的URI
+ */
+ @Override
+ public Uri insert(Uri uri, ContentValues values) {
+ // 获取可写数据库
+ SQLiteDatabase db = mHelper.getWritableDatabase();
+ long dataId = 0, noteId = 0, insertedId = 0;
+
+ // 根据URI类型执行不同的插入操作
+ switch (mMatcher.match(uri)) {
+ case URI_NOTE:
+ // 插入便签
+ insertedId = noteId = db.insert(TABLE.NOTE, null, values);
+ break;
+ case URI_DATA:
+ // 插入数据
+ if (values.containsKey(DataColumns.NOTE_ID)) {
+ noteId = values.getAsLong(DataColumns.NOTE_ID);
+ } else {
+ Log.d(TAG, "Wrong data format without note id:" + values.toString());
+ }
+ insertedId = dataId = db.insert(TABLE.DATA, null, values);
+ break;
+ default:
+ throw new IllegalArgumentException("Unknown URI " + uri);
+ }
+
+ // 通知便签URI的观察者
+ if (noteId > 0) {
+ getContext().getContentResolver().notifyChange(
+ ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
+ }
+
+ // 通知数据URI的观察者
+ if (dataId > 0) {
+ getContext().getContentResolver().notifyChange(
+ ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
+ }
+
+ return ContentUris.withAppendedId(uri, insertedId);
+ }
+
+ /**
+ * 删除数据
+ *
+ * @param uri 请求的URI
+ * @param selection 删除条件
+ * @param selectionArgs 删除条件参数
+ * @return 删除的行数
+ */
+ @Override
+ public int delete(Uri uri, String selection, String[] selectionArgs) {
+ int count = 0;
+ String id = null;
+ // 获取可写数据库
+ SQLiteDatabase db = mHelper.getWritableDatabase();
+ boolean deleteData = false;
+
+ // 根据URI类型执行不同的删除操作
+ switch (mMatcher.match(uri)) {
+ case URI_NOTE:
+ // 删除便签，ID必须大于0（系统文件夹ID小于等于0）
+ selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
+ count = db.delete(TABLE.NOTE, selection, selectionArgs);
+ break;
+ case URI_NOTE_ITEM:
+ // 删除单个便签项
+ id = uri.getPathSegments().get(1);
+ /**
+ * ID小于0的是系统文件夹，不允许删除
+ */
+ long noteId = Long.valueOf(id);
+ if (noteId <= 0) {
+ break;
+ }
+ count = db.delete(TABLE.NOTE,
+ NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
+ break;
+ case URI_DATA:
+ // 删除数据
+ count = db.delete(TABLE.DATA, selection, selectionArgs);
+ deleteData = true;
+ break;
+ case URI_DATA_ITEM:
+ // 删除单个数据项
+ id = uri.getPathSegments().get(1);
+ count = db.delete(TABLE.DATA,
+ DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
+ deleteData = true;
+ break;
+ default:
+ throw new IllegalArgumentException("Unknown URI " + uri);
+ }
+
+ // 如果有删除操作，通知观察者
+ if (count > 0) {
+ if (deleteData) {
+ getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
+ }
+ getContext().getContentResolver().notifyChange(uri, null);
+ }
+ return count;
+ }
+
+ /**
+ * 更新数据
+ *
+ * @param uri 请求的URI
+ * @param values 要更新的值
+ * @param selection 更新条件
+ * @param selectionArgs 更新条件参数
+ * @return 更新的行数
+ */
+ @Override
+ public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+ int count = 0;
+ String id = null;
+ // 获取可写数据库
+ SQLiteDatabase db = mHelper.getWritableDatabase();
+ boolean updateData = false;
+
+ // 根据URI类型执行不同的更新操作
+ switch (mMatcher.match(uri)) {
+ case URI_NOTE:
+ // 更新便签表
+ increaseNoteVersion(-1, selection, selectionArgs); // 增加便签版本号
+ count = db.update(TABLE.NOTE, values, selection, selectionArgs);
+ break;
+ case URI_NOTE_ITEM:
+ // 更新单个便签项
+ id = uri.getPathSegments().get(1);
+ increaseNoteVersion(Long.valueOf(id), selection, selectionArgs); // 增加便签版本号
+ count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
+ + parseSelection(selection), selectionArgs);
+ break;
+ case URI_DATA:
+ // 更新数据表
+ count = db.update(TABLE.DATA, values, selection, selectionArgs);
+ updateData = true;
+ break;
+ case URI_DATA_ITEM:
+ // 更新单个数据项
+ id = uri.getPathSegments().get(1);
+ count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
+ + parseSelection(selection), selectionArgs);
+ updateData = true;
+ break;
+ default:
+ throw new IllegalArgumentException("Unknown URI " + uri);
+ }
+
+ // 如果有更新操作，通知观察者
+ if (count > 0) {
+ if (updateData) {
+ getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
+ }
+ getContext().getContentResolver().notifyChange(uri, null);
+ }
+ return count;
+ }
+
+ /**
+ * 解析选择条件
+ * 将额外的选择条件添加到现有条件中
+ *
+ * @param selection 选择条件
+ * @return 解析后的选择条件
+ */
+ private String parseSelection(String selection) {
+ return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
+ }
+
+ /**
+ * 增加便签版本号
+ * 当便签内容更新时，增加版本号以便于同步
+ *
+ * @param id 便签ID，如果为-1则使用selection和selectionArgs
+ * @param selection 选择条件
+ * @param selectionArgs 选择条件参数
+ */
+ private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
+ // 构建更新版本号的SQL语句
+ StringBuilder sql = new StringBuilder(120);
+ sql.append("UPDATE ");
+ sql.append(TABLE.NOTE);
+ sql.append(" SET ");
+ sql.append(NoteColumns.VERSION);
+ sql.append("=" + NoteColumns.VERSION + "+1 ");
+
+ // 添加WHERE条件
+ if (id > 0 || !TextUtils.isEmpty(selection)) {
+ sql.append(" WHERE ");
+ }
+ if (id > 0) {
+ sql.append(NoteColumns.ID + "=" + String.valueOf(id));
+ }
+ if (!TextUtils.isEmpty(selection)) {
+ String selectString = id > 0 ? parseSelection(selection) : selection;
+ // 替换参数占位符
+ for (String args : selectionArgs) {
+ selectString = selectString.replaceFirst("\\?", args);
+ }
+ sql.append(selectString);
+ }
+
+ // 执行SQL语句
+ mHelper.getWritableDatabase().execSQL(sql.toString());
+ }
+
+ /**
+ * 获取内容类型
+ *
+ * @param uri 请求的URI
+ * @return 内容类型
+ */
+ @Override
+ public String getType(Uri uri) {
+ // TODO Auto-generated method stub
+ return null;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/MetaData.java b/app/src/main/java/net/micode/notes/gtask/data/MetaData.java
new file mode 100644
index 0000000..b6f5d2e
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/MetaData.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: MetaData.java
+ * 描述: Google Tasks元数据处理类，用于存储和管理便签与Google Tasks之间的映射关系
+ * 作用: 存储便签的元数据信息，建立本地便签与Google Tasks任务的关联
+ */
+package net.micode.notes.gtask.data;
+
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * MetaData类，继承自Task类
+ * 用于存储和管理Google Tasks与本地便签之间的映射关系
+ * 作为元数据存储容器，保存两端数据的关联信息
+ */
+public class MetaData extends Task {
+ /** 日志标签 */
+ private final static String TAG = MetaData.class.getSimpleName();
+
+ /** 关联的Google Task ID */
+ private String mRelatedGid = null;
+
+ /**
+ * 设置元数据信息
+ *
+ * @param gid Google Task ID
+ * @param metaInfo 元数据信息的JSON对象
+ */
+ public void setMeta(String gid, JSONObject metaInfo) {
+ try {
+ // 将Google Task ID添加到元数据信息中
+ metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
+ } catch (JSONException e) {
+ Log.e(TAG, "failed to put related gid");
+ }
+ // 将元数据JSON字符串设置为任务的备注
+ setNotes(metaInfo.toString());
+ // 设置元数据任务的名称为固定值
+ setName(GTaskStringUtils.META_NOTE_NAME);
+ }
+
+ /**
+ * 获取关联的Google Task ID
+ *
+ * @return 关联的Google Task ID
+ */
+ public String getRelatedGid() {
+ return mRelatedGid;
+ }
+
+ /**
+ * 判断元数据是否值得保存
+ *
+ * @return 如果备注不为空则返回true，否则返回false
+ */
+ @Override
+ public boolean isWorthSaving() {
+ return getNotes() != null;
+ }
+
+ /**
+ * 从远程JSON数据中设置内容
+ * 解析远程数据并提取关联的Google Task ID
+ *
+ * @param js 远程JSON数据
+ */
+ @Override
+ public void setContentByRemoteJSON(JSONObject js) {
+ // 调用父类方法设置基本内容
+ super.setContentByRemoteJSON(js);
+ if (getNotes() != null) {
+ try {
+ // 解析备注中的JSON数据
+ JSONObject metaInfo = new JSONObject(getNotes().trim());
+ // 获取关联的Google Task ID
+ mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
+ } catch (JSONException e) {
+ Log.w(TAG, "failed to get related gid");
+ mRelatedGid = null;
+ }
+ }
+ }
+
+ /**
+ * 从本地JSON数据中设置内容
+ * 此方法不应被调用，因为元数据只从远程获取
+ *
+ * @param js 本地JSON数据
+ * @throws IllegalAccessError 如果调用此方法则抛出异常
+ */
+ @Override
+ public void setContentByLocalJSON(JSONObject js) {
+ // 此方法不应被调用
+ throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
+ }
+
+ /**
+ * 从内容中获取本地JSON数据
+ * 此方法不应被调用，因为元数据只从远程获取
+ *
+ * @return JSONObject 本地JSON数据
+ * @throws IllegalAccessError 如果调用此方法则抛出异常
+ */
+ @Override
+ public JSONObject getLocalJSONFromContent() {
+ throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
+ }
+
+ /**
+ * 获取同步操作类型
+ * 此方法不应被调用，因为元数据的同步操作由GTaskManager管理
+ *
+ * @param c 数据库游标
+ * @return 同步操作类型
+ * @throws IllegalAccessError 如果调用此方法则抛出异常
+ */
+ @Override
+ public int getSyncAction(Cursor c) {
+ throw new IllegalAccessError("MetaData:getSyncAction should not be called");
+ }
+
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/Node.java b/app/src/main/java/net/micode/notes/gtask/data/Node.java
new file mode 100644
index 0000000..983235e
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/Node.java
@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: Node.java
+ * 描述: 数据节点抽象基类，定义了同步操作的基本接口和属性
+ * 作用: 为TaskList、Task和MetaData等具体类提供统一的接口和基本功能
+ */
+package net.micode.notes.gtask.data;
+
+import android.database.Cursor;
+
+import org.json.JSONObject;
+
+/**
+ * Node抽象类
+ * 定义了同步操作的基本接口和属性，是TaskList、Task和MetaData等类的基类
+ * 提供了数据同步过程中需要的基本操作和状态定义
+ */
+public abstract class Node {
+ /** 同步操作：无操作 */
+ public static final int SYNC_ACTION_NONE = 0;
+
+ /** 同步操作：添加到远程 */
+ public static final int SYNC_ACTION_ADD_REMOTE = 1;
+
+ /** 同步操作：添加到本地 */
+ public static final int SYNC_ACTION_ADD_LOCAL = 2;
+
+ /** 同步操作：从远程删除 */
+ public static final int SYNC_ACTION_DEL_REMOTE = 3;
+
+ /** 同步操作：从本地删除 */
+ public static final int SYNC_ACTION_DEL_LOCAL = 4;
+
+ /** 同步操作：更新远程 */
+ public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
+
+ /** 同步操作：更新本地 */
+ public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
+
+ /** 同步操作：更新冲突 */
+ public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
+
+ /** 同步操作：错误 */
+ public static final int SYNC_ACTION_ERROR = 8;
+
+ /** Google Task ID */
+ private String mGid;
+
+ /** 节点名称 */
+ private String mName;
+
+ /** 最后修改时间 */
+ private long mLastModified;
+
+ /** 是否已删除 */
+ private boolean mDeleted;
+
+ /**
+ * 构造函数
+ * 初始化节点的基本属性
+ */
+ public Node() {
+ mGid = null;
+ mName = "";
+ mLastModified = 0;
+ mDeleted = false;
+ }
+
+ /**
+ * 获取创建操作的JSON对象
+ *
+ * @param actionId 操作ID
+ * @return 创建操作的JSON对象
+ */
+ public abstract JSONObject getCreateAction(int actionId);
+
+ /**
+ * 获取更新操作的JSON对象
+ *
+ * @param actionId 操作ID
+ * @return 更新操作的JSON对象
+ */
+ public abstract JSONObject getUpdateAction(int actionId);
+
+ /**
+ * 从远程JSON数据中设置内容
+ *
+ * @param js 远程JSON数据
+ */
+ public abstract void setContentByRemoteJSON(JSONObject js);
+
+ /**
+ * 从本地JSON数据中设置内容
+ *
+ * @param js 本地JSON数据
+ */
+ public abstract void setContentByLocalJSON(JSONObject js);
+
+ /**
+ * 从内容中获取本地JSON数据
+ *
+ * @return 本地JSON数据
+ */
+ public abstract JSONObject getLocalJSONFromContent();
+
+ /**
+ * 获取同步操作类型
+ *
+ * @param c 数据库游标
+ * @return 同步操作类型
+ */
+ public abstract int getSyncAction(Cursor c);
+
+ /**
+ * 设置Google Task ID
+ *
+ * @param gid Google Task ID
+ */
+ public void setGid(String gid) {
+ this.mGid = gid;
+ }
+
+ /**
+ * 设置节点名称
+ *
+ * @param name 节点名称
+ */
+ public void setName(String name) {
+ this.mName = name;
+ }
+
+ /**
+ * 设置最后修改时间
+ *
+ * @param lastModified 最后修改时间
+ */
+ public void setLastModified(long lastModified) {
+ this.mLastModified = lastModified;
+ }
+
+ /**
+ * 设置删除状态
+ *
+ * @param deleted 是否已删除
+ */
+ public void setDeleted(boolean deleted) {
+ this.mDeleted = deleted;
+ }
+
+ /**
+ * 获取Google Task ID
+ *
+ * @return Google Task ID
+ */
+ public String getGid() {
+ return this.mGid;
+ }
+
+ /**
+ * 获取节点名称
+ *
+ * @return 节点名称
+ */
+ public String getName() {
+ return this.mName;
+ }
+
+ /**
+ * 获取最后修改时间
+ *
+ * @return 最后修改时间
+ */
+ public long getLastModified() {
+ return this.mLastModified;
+ }
+
+ /**
+ * 获取删除状态
+ *
+ * @return 是否已删除
+ */
+ public boolean getDeleted() {
+ return this.mDeleted;
+ }
+
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/SqlData.java b/app/src/main/java/net/micode/notes/gtask/data/SqlData.java
new file mode 100644
index 0000000..e4cc676
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/SqlData.java
@@ -0,0 +1,266 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: SqlData.java
+ * 描述: 便签数据内容的SQL操作封装类
+ * 作用: 管理便签内容数据的数据库操作，提供数据的CRUD功能
+ */
+package net.micode.notes.gtask.data;
+
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.NotesDatabaseHelper.TABLE;
+import net.micode.notes.gtask.exception.ActionFailureException;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * SqlData类
+ * 负责管理便签内容数据的数据库操作
+ * 封装了对便签内容的增删改查功能
+ */
+public class SqlData {
+ /** 日志标签 */
+ private static final String TAG = SqlData.class.getSimpleName();
+
+ /** 无效ID标识 */
+ private static final int INVALID_ID = -99999;
+
+ /** 数据表查询投影列 */
+ public static final String[] PROJECTION_DATA = new String[] {
+ DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
+ DataColumns.DATA3
+ };
+
+ /** 数据ID列索引 */
+ public static final int DATA_ID_COLUMN = 0;
+
+ /** 数据MIME类型列索引 */
+ public static final int DATA_MIME_TYPE_COLUMN = 1;
+
+ /** 数据内容列索引 */
+ public static final int DATA_CONTENT_COLUMN = 2;
+
+ /** 数据DATA1列索引 */
+ public static final int DATA_CONTENT_DATA_1_COLUMN = 3;
+
+ /** 数据DATA3列索引 */
+ public static final int DATA_CONTENT_DATA_3_COLUMN = 4;
+
+ /** 内容解析器 */
+ private ContentResolver mContentResolver;
+
+ /** 是否为新建数据标志 */
+ private boolean mIsCreate;
+
+ /** 数据ID */
+ private long mDataId;
+
+ /** 数据MIME类型 */
+ private String mDataMimeType;
+
+ /** 数据内容 */
+ private String mDataContent;
+
+ /** 数据DATA1值 */
+ private long mDataContentData1;
+
+ /** 数据DATA3值 */
+ private String mDataContentData3;
+
+ /** 数据变更值集合 */
+ private ContentValues mDiffDataValues;
+
+ /**
+ * 构造函数 - 创建新的数据对象
+ *
+ * @param context 应用上下文
+ */
+ public SqlData(Context context) {
+ mContentResolver = context.getContentResolver();
+ mIsCreate = true;
+ mDataId = INVALID_ID;
+ mDataMimeType = DataConstants.NOTE;
+ mDataContent = "";
+ mDataContentData1 = 0;
+ mDataContentData3 = "";
+ mDiffDataValues = new ContentValues();
+ }
+
+ /**
+ * 构造函数 - 从数据库游标加载现有数据
+ *
+ * @param context 应用上下文
+ * @param c 数据库游标
+ */
+ public SqlData(Context context, Cursor c) {
+ mContentResolver = context.getContentResolver();
+ mIsCreate = false;
+ loadFromCursor(c);
+ mDiffDataValues = new ContentValues();
+ }
+
+ /**
+ * 从数据库游标加载数据
+ *
+ * @param c 数据库游标
+ */
+ private void loadFromCursor(Cursor c) {
+ mDataId = c.getLong(DATA_ID_COLUMN);
+ mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
+ mDataContent = c.getString(DATA_CONTENT_COLUMN);
+ mDataContentData1 = c.getLong(DATA_CONTENT_DATA_1_COLUMN);
+ mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
+ }
+
+ /**
+ * 从JSON对象设置数据内容
+ * 比较新旧值，只记录变更的字段
+ *
+ * @param js JSON对象
+ * @throws JSONException JSON解析异常
+ */
+ public void setContent(JSONObject js) throws JSONException {
+ // 处理数据ID
+ long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
+ if (mIsCreate || mDataId != dataId) {
+ mDiffDataValues.put(DataColumns.ID, dataId);
+ }
+ mDataId = dataId;
+
+ // 处理MIME类型
+ String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
+ : DataConstants.NOTE;
+ if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
+ mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType);
+ }
+ mDataMimeType = dataMimeType;
+
+ // 处理内容
+ String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
+ if (mIsCreate || !mDataContent.equals(dataContent)) {
+ mDiffDataValues.put(DataColumns.CONTENT, dataContent);
+ }
+ mDataContent = dataContent;
+
+ // 处理DATA1
+ long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
+ if (mIsCreate || mDataContentData1 != dataContentData1) {
+ mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
+ }
+ mDataContentData1 = dataContentData1;
+
+ // 处理DATA3
+ String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
+ if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
+ mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
+ }
+ mDataContentData3 = dataContentData3;
+ }
+
+ /**
+ * 获取数据内容的JSON对象表示
+ *
+ * @return 包含数据内容的JSON对象
+ * @throws JSONException JSON解析异常
+ */
+ public JSONObject getContent() throws JSONException {
+ if (mIsCreate) {
+ Log.e(TAG, "it seems that we haven't created this in database yet");
+ return null;
+ }
+ JSONObject js = new JSONObject();
+ js.put(DataColumns.ID, mDataId);
+ js.put(DataColumns.MIME_TYPE, mDataMimeType);
+ js.put(DataColumns.CONTENT, mDataContent);
+ js.put(DataColumns.DATA1, mDataContentData1);
+ js.put(DataColumns.DATA3, mDataContentData3);
+ return js;
+ }
+
+ /**
+ * 提交数据变更到数据库
+ *
+ * @param noteId 关联的便签ID
+ * @param validateVersion 是否验证版本
+ * @param version 版本号
+ */
+ public void commit(long noteId, boolean validateVersion, long version) {
+ // 新建数据
+ if (mIsCreate) {
+ // 处理无效ID
+ if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
+ mDiffDataValues.remove(DataColumns.ID);
+ }
+
+ // 设置关联的便签ID
+ mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
+ Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
+ try {
+ mDataId = Long.valueOf(uri.getPathSegments().get(1));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Get note id error :" + e.toString());
+ throw new ActionFailureException("create note failed");
+ }
+ } else {
+ // 更新现有数据
+ if (mDiffDataValues.size() > 0) {
+ int result = 0;
+ if (!validateVersion) {
+ // 不验证版本的更新
+ result = mContentResolver.update(ContentUris.withAppendedId(
+ Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
+ } else {
+ // 验证版本的更新
+ result = mContentResolver.update(ContentUris.withAppendedId(
+ Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
+ " ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
+ + " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
+ String.valueOf(noteId), String.valueOf(version)
+ });
+ }
+ if (result == 0) {
+ Log.w(TAG, "there is no update. maybe user updates note when syncing");
+ }
+ }
+ }
+
+ // 清空变更记录并更新状态
+ mDiffDataValues.clear();
+ mIsCreate = false;
+ }
+
+ /**
+ * 获取数据ID
+ *
+ * @return 数据ID
+ */
+ public long getId() {
+ return mDataId;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/SqlNote.java b/app/src/main/java/net/micode/notes/gtask/data/SqlNote.java
new file mode 100644
index 0000000..8abe9da
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/SqlNote.java
@@ -0,0 +1,661 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: SqlNote.java
+ * 描述: 便签数据的SQL操作封装类
+ * 作用: 管理便签数据的数据库操作，提供便签的CRUD功能，是应用与数据库交互的核心类
+ */
+package net.micode.notes.gtask.data;
+
+import android.appwidget.AppWidgetManager;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+import net.micode.notes.tool.ResourceParser;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+
+/**
+ * SqlNote类
+ * 负责管理便签数据的数据库操作
+ * 封装了对便签的增删改查功能，并处理与Google Tasks的数据同步
+ */
+public class SqlNote {
+ /** 日志标签 */
+ private static final String TAG = SqlNote.class.getSimpleName();
+
+ /** 无效ID标识 */
+ private static final int INVALID_ID = -99999;
+
+ /** 便签表查询投影列 */
+ public static final String[] PROJECTION_NOTE = new String[] {
+ NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
+ NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
+ NoteColumns.NOTES_COUNT, NoteColumns.PARENT_ID, NoteColumns.SNIPPET, NoteColumns.TYPE,
+ NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE, NoteColumns.SYNC_ID,
+ NoteColumns.LOCAL_MODIFIED, NoteColumns.ORIGIN_PARENT_ID, NoteColumns.GTASK_ID,
+ NoteColumns.VERSION
+ };
+
+ /** ID列索引 */
+ public static final int ID_COLUMN = 0;
+
+ /** 提醒日期列索引 */
+ public static final int ALERTED_DATE_COLUMN = 1;
+
+ /** 背景颜色ID列索引 */
+ public static final int BG_COLOR_ID_COLUMN = 2;
+
+ /** 创建日期列索引 */
+ public static final int CREATED_DATE_COLUMN = 3;
+
+ /** 是否有附件列索引 */
+ public static final int HAS_ATTACHMENT_COLUMN = 4;
+
+ /** 修改日期列索引 */
+ public static final int MODIFIED_DATE_COLUMN = 5;
+
+ /** 便签数量列索引 */
+ public static final int NOTES_COUNT_COLUMN = 6;
+
+ /** 父ID列索引 */
+ public static final int PARENT_ID_COLUMN = 7;
+
+ /** 摘要列索引 */
+ public static final int SNIPPET_COLUMN = 8;
+
+ /** 类型列索引 */
+ public static final int TYPE_COLUMN = 9;
+
+ /** 小部件ID列索引 */
+ public static final int WIDGET_ID_COLUMN = 10;
+
+ /** 小部件类型列索引 */
+ public static final int WIDGET_TYPE_COLUMN = 11;
+
+ /** 同步ID列索引 */
+ public static final int SYNC_ID_COLUMN = 12;
+
+ /** 本地修改标志列索引 */
+ public static final int LOCAL_MODIFIED_COLUMN = 13;
+
+ /** 原始父ID列索引 */
+ public static final int ORIGIN_PARENT_ID_COLUMN = 14;
+
+ /** Google Task ID列索引 */
+ public static final int GTASK_ID_COLUMN = 15;
+
+ /** 版本列索引 */
+ public static final int VERSION_COLUMN = 16;
+
+ /** 应用上下文 */
+ private Context mContext;
+
+ /** 内容解析器 */
+ private ContentResolver mContentResolver;
+
+ /** 是否为新建便签标志 */
+ private boolean mIsCreate;
+
+ /** 便签ID */
+ private long mId;
+
+ /** 提醒日期 */
+ private long mAlertDate;
+
+ /** 背景颜色ID */
+ private int mBgColorId;
+
+ /** 创建日期 */
+ private long mCreatedDate;
+
+ /** 是否有附件 */
+ private int mHasAttachment;
+
+ /** 修改日期 */
+ private long mModifiedDate;
+
+ /** 父ID */
+ private long mParentId;
+
+ /** 摘要 */
+ private String mSnippet;
+
+ /** 类型 */
+ private int mType;
+
+ /** 小部件ID */
+ private int mWidgetId;
+
+ /** 小部件类型 */
+ private int mWidgetType;
+
+ /** 原始父ID */
+ private long mOriginParent;
+
+ /** 版本号 */
+ private long mVersion;
+
+ /** 便签变更值集合 */
+ private ContentValues mDiffNoteValues;
+
+ /** 便签数据列表 */
+ private ArrayList mDataList;
+
+ /**
+ * 构造函数 - 创建新的便签对象
+ *
+ * @param context 应用上下文
+ */
+ public SqlNote(Context context) {
+ mContext = context;
+ mContentResolver = context.getContentResolver();
+ mIsCreate = true;
+ mId = INVALID_ID;
+ mAlertDate = 0;
+ mBgColorId = ResourceParser.getDefaultBgId(context);
+ mCreatedDate = System.currentTimeMillis();
+ mHasAttachment = 0;
+ mModifiedDate = System.currentTimeMillis();
+ mParentId = 0;
+ mSnippet = "";
+ mType = Notes.TYPE_NOTE;
+ mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
+ mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
+ mOriginParent = 0;
+ mVersion = 0;
+ mDiffNoteValues = new ContentValues();
+ mDataList = new ArrayList();
+ }
+
+ /**
+ * 构造函数 - 从数据库游标加载现有便签
+ *
+ * @param context 应用上下文
+ * @param c 数据库游标
+ */
+ public SqlNote(Context context, Cursor c) {
+ mContext = context;
+ mContentResolver = context.getContentResolver();
+ mIsCreate = false;
+ loadFromCursor(c);
+ mDataList = new ArrayList();
+ if (mType == Notes.TYPE_NOTE)
+ loadDataContent();
+ mDiffNoteValues = new ContentValues();
+ }
+
+ /**
+ * 构造函数 - 通过ID加载现有便签
+ *
+ * @param context 应用上下文
+ * @param id 便签ID
+ */
+ public SqlNote(Context context, long id) {
+ mContext = context;
+ mContentResolver = context.getContentResolver();
+ mIsCreate = false;
+ loadFromCursor(id);
+ mDataList = new ArrayList();
+ if (mType == Notes.TYPE_NOTE)
+ loadDataContent();
+ mDiffNoteValues = new ContentValues();
+ }
+
+ /**
+ * 通过ID从数据库加载便签数据
+ *
+ * @param id 便签ID
+ */
+ private void loadFromCursor(long id) {
+ Cursor c = null;
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
+ new String[] {
+ String.valueOf(id)
+ }, null);
+ if (c != null) {
+ c.moveToNext();
+ loadFromCursor(c);
+ } else {
+ Log.w(TAG, "loadFromCursor: cursor = null");
+ }
+ } finally {
+ if (c != null)
+ c.close();
+ }
+ }
+
+ /**
+ * 从数据库游标加载便签数据
+ *
+ * @param c 数据库游标
+ */
+ private void loadFromCursor(Cursor c) {
+ mId = c.getLong(ID_COLUMN);
+ mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
+ mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
+ mCreatedDate = c.getLong(CREATED_DATE_COLUMN);
+ mHasAttachment = c.getInt(HAS_ATTACHMENT_COLUMN);
+ mModifiedDate = c.getLong(MODIFIED_DATE_COLUMN);
+ mParentId = c.getLong(PARENT_ID_COLUMN);
+ mSnippet = c.getString(SNIPPET_COLUMN);
+ mType = c.getInt(TYPE_COLUMN);
+ mWidgetId = c.getInt(WIDGET_ID_COLUMN);
+ mWidgetType = c.getInt(WIDGET_TYPE_COLUMN);
+ mVersion = c.getLong(VERSION_COLUMN);
+ }
+
+ /**
+ * 加载便签的内容数据
+ * 从数据库中查询与当前便签关联的所有数据项
+ */
+ private void loadDataContent() {
+ Cursor c = null;
+ mDataList.clear();
+ try {
+ // 查询与当前便签ID关联的所有数据
+ c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
+ "(note_id=?)", new String[] {
+ String.valueOf(mId)
+ }, null);
+ if (c != null) {
+ if (c.getCount() == 0) {
+ Log.w(TAG, "it seems that the note has not data");
+ return;
+ }
+ // 遍历所有数据项并添加到数据列表中
+ while (c.moveToNext()) {
+ SqlData data = new SqlData(mContext, c);
+ mDataList.add(data);
+ }
+ } else {
+ Log.w(TAG, "loadDataContent: cursor = null");
+ }
+ } finally {
+ if (c != null)
+ c.close();
+ }
+ }
+
+ /**
+ * 从JSON对象设置便签内容
+ * 解析JSON数据并更新便签的各个属性
+ *
+ * @param js JSON对象，包含便签数据
+ * @return 设置是否成功
+ */
+ public boolean setContent(JSONObject js) {
+ try {
+ // 获取便签基本信息
+ JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+ if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
+ // 系统文件夹不允许更新
+ Log.w(TAG, "cannot set system folder");
+ } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
+ // 对于文件夹类型，只能更新摘要和类型
+ String snippet = note.has(NoteColumns.SNIPPET) ? note
+ .getString(NoteColumns.SNIPPET) : "";
+ if (mIsCreate || !mSnippet.equals(snippet)) {
+ mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
+ }
+ mSnippet = snippet;
+
+ int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
+ : Notes.TYPE_NOTE;
+ if (mIsCreate || mType != type) {
+ mDiffNoteValues.put(NoteColumns.TYPE, type);
+ }
+ mType = type;
+ } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
+ // 对于便签类型，处理所有属性
+ JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+ long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
+ if (mIsCreate || mId != id) {
+ mDiffNoteValues.put(NoteColumns.ID, id);
+ }
+ mId = id;
+
+ long alertDate = note.has(NoteColumns.ALERTED_DATE) ? note
+ .getLong(NoteColumns.ALERTED_DATE) : 0;
+ if (mIsCreate || mAlertDate != alertDate) {
+ mDiffNoteValues.put(NoteColumns.ALERTED_DATE, alertDate);
+ }
+ mAlertDate = alertDate;
+
+ int bgColorId = note.has(NoteColumns.BG_COLOR_ID) ? note
+ .getInt(NoteColumns.BG_COLOR_ID) : ResourceParser.getDefaultBgId(mContext);
+ if (mIsCreate || mBgColorId != bgColorId) {
+ mDiffNoteValues.put(NoteColumns.BG_COLOR_ID, bgColorId);
+ }
+ mBgColorId = bgColorId;
+
+ long createDate = note.has(NoteColumns.CREATED_DATE) ? note
+ .getLong(NoteColumns.CREATED_DATE) : System.currentTimeMillis();
+ if (mIsCreate || mCreatedDate != createDate) {
+ mDiffNoteValues.put(NoteColumns.CREATED_DATE, createDate);
+ }
+ mCreatedDate = createDate;
+
+ int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT) ? note
+ .getInt(NoteColumns.HAS_ATTACHMENT) : 0;
+ if (mIsCreate || mHasAttachment != hasAttachment) {
+ mDiffNoteValues.put(NoteColumns.HAS_ATTACHMENT, hasAttachment);
+ }
+ mHasAttachment = hasAttachment;
+
+ long modifiedDate = note.has(NoteColumns.MODIFIED_DATE) ? note
+ .getLong(NoteColumns.MODIFIED_DATE) : System.currentTimeMillis();
+ if (mIsCreate || mModifiedDate != modifiedDate) {
+ mDiffNoteValues.put(NoteColumns.MODIFIED_DATE, modifiedDate);
+ }
+ mModifiedDate = modifiedDate;
+
+ long parentId = note.has(NoteColumns.PARENT_ID) ? note
+ .getLong(NoteColumns.PARENT_ID) : 0;
+ if (mIsCreate || mParentId != parentId) {
+ mDiffNoteValues.put(NoteColumns.PARENT_ID, parentId);
+ }
+ mParentId = parentId;
+
+ String snippet = note.has(NoteColumns.SNIPPET) ? note
+ .getString(NoteColumns.SNIPPET) : "";
+ if (mIsCreate || !mSnippet.equals(snippet)) {
+ mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
+ }
+ mSnippet = snippet;
+
+ int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
+ : Notes.TYPE_NOTE;
+ if (mIsCreate || mType != type) {
+ mDiffNoteValues.put(NoteColumns.TYPE, type);
+ }
+ mType = type;
+
+ int widgetId = note.has(NoteColumns.WIDGET_ID) ? note.getInt(NoteColumns.WIDGET_ID)
+ : AppWidgetManager.INVALID_APPWIDGET_ID;
+ if (mIsCreate || mWidgetId != widgetId) {
+ mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
+ }
+ mWidgetId = widgetId;
+
+ int widgetType = note.has(NoteColumns.WIDGET_TYPE) ? note
+ .getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
+ if (mIsCreate || mWidgetType != widgetType) {
+ mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
+ }
+ mWidgetType = widgetType;
+
+ long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID) ? note
+ .getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
+ if (mIsCreate || mOriginParent != originParent) {
+ mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
+ }
+ mOriginParent = originParent;
+
+ // 处理便签的数据内容
+ for (int i = 0; i < dataArray.length(); i++) {
+ JSONObject data = dataArray.getJSONObject(i);
+ SqlData sqlData = null;
+ // 查找是否存在匹配的数据项
+ if (data.has(DataColumns.ID)) {
+ long dataId = data.getLong(DataColumns.ID);
+ for (SqlData temp : mDataList) {
+ if (dataId == temp.getId()) {
+ sqlData = temp;
+ }
+ }
+ }
+
+ // 如果没有找到匹配的数据项，则创建新的
+ if (sqlData == null) {
+ sqlData = new SqlData(mContext);
+ mDataList.add(sqlData);
+ }
+
+ // 设置数据内容
+ sqlData.setContent(data);
+ }
+ }
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * 获取便签内容的JSON对象表示
+ * 将便签的属性和数据内容转换为JSON格式
+ *
+ * @return 包含便签内容的JSON对象
+ */
+ public JSONObject getContent() {
+ try {
+ JSONObject js = new JSONObject();
+
+ if (mIsCreate) {
+ Log.e(TAG, "it seems that we haven't created this in database yet");
+ return null;
+ }
+
+ JSONObject note = new JSONObject();
+ if (mType == Notes.TYPE_NOTE) {
+ // 便签类型，包含所有属性
+ note.put(NoteColumns.ID, mId);
+ note.put(NoteColumns.ALERTED_DATE, mAlertDate);
+ note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
+ note.put(NoteColumns.CREATED_DATE, mCreatedDate);
+ note.put(NoteColumns.HAS_ATTACHMENT, mHasAttachment);
+ note.put(NoteColumns.MODIFIED_DATE, mModifiedDate);
+ note.put(NoteColumns.PARENT_ID, mParentId);
+ note.put(NoteColumns.SNIPPET, mSnippet);
+ note.put(NoteColumns.TYPE, mType);
+ note.put(NoteColumns.WIDGET_ID, mWidgetId);
+ note.put(NoteColumns.WIDGET_TYPE, mWidgetType);
+ note.put(NoteColumns.ORIGIN_PARENT_ID, mOriginParent);
+ js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+
+ // 添加便签的数据内容
+ JSONArray dataArray = new JSONArray();
+ for (SqlData sqlData : mDataList) {
+ JSONObject data = sqlData.getContent();
+ if (data != null) {
+ dataArray.put(data);
+ }
+ }
+ js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
+ } else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
+ // 文件夹或系统类型，只包含基本属性
+ note.put(NoteColumns.ID, mId);
+ note.put(NoteColumns.TYPE, mType);
+ note.put(NoteColumns.SNIPPET, mSnippet);
+ js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+ }
+
+ return js;
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ }
+ return null;
+ }
+
+ /**
+ * 设置便签的父ID
+ *
+ * @param id 父便签的ID
+ */
+ public void setParentId(long id) {
+ mParentId = id;
+ mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
+ }
+
+ /**
+ * 设置便签的Google Task ID
+ *
+ * @param gid Google Task ID
+ */
+ public void setGtaskId(String gid) {
+ mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
+ }
+
+ /**
+ * 设置便签的同步ID
+ *
+ * @param syncId 同步ID
+ */
+ public void setSyncId(long syncId) {
+ mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
+ }
+
+ /**
+ * 重置本地修改标志
+ * 表示便签已经同步到服务器
+ */
+ public void resetLocalModified() {
+ mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
+ }
+
+ /**
+ * 获取便签ID
+ *
+ * @return 便签ID
+ */
+ public long getId() {
+ return mId;
+ }
+
+ /**
+ * 获取便签的父ID
+ *
+ * @return 父便签ID
+ */
+ public long getParentId() {
+ return mParentId;
+ }
+
+ /**
+ * 获取便签摘要
+ *
+ * @return 便签摘要
+ */
+ public String getSnippet() {
+ return mSnippet;
+ }
+
+ /**
+ * 判断是否为便签类型
+ *
+ * @return 如果是便签类型返回true，否则返回false
+ */
+ public boolean isNoteType() {
+ return mType == Notes.TYPE_NOTE;
+ }
+
+ /**
+ * 提交便签变更到数据库
+ * 处理新建和更新两种情况
+ *
+ * @param validateVersion 是否验证版本号
+ */
+ public void commit(boolean validateVersion) {
+ if (mIsCreate) {
+ // 处理新建便签
+ if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
+ mDiffNoteValues.remove(NoteColumns.ID);
+ }
+
+ // 插入新便签到数据库
+ Uri uri = mContentResolver.insert(Notes.CONTENT_NOTE_URI, mDiffNoteValues);
+ try {
+ mId = Long.valueOf(uri.getPathSegments().get(1));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Get note id error :" + e.toString());
+ throw new ActionFailureException("create note failed");
+ }
+ if (mId == 0) {
+ throw new IllegalStateException("Create thread id failed");
+ }
+
+ // 提交便签关联的数据内容
+ if (mType == Notes.TYPE_NOTE) {
+ for (SqlData sqlData : mDataList) {
+ sqlData.commit(mId, false, -1);
+ }
+ }
+ } else {
+ // 处理更新便签
+ if (mId <= 0 && mId != Notes.ID_ROOT_FOLDER && mId != Notes.ID_CALL_RECORD_FOLDER) {
+ Log.e(TAG, "No such note");
+ throw new IllegalStateException("Try to update note with invalid id");
+ }
+ if (mDiffNoteValues.size() > 0) {
+ // 更新版本号
+ mVersion ++;
+ int result = 0;
+ if (!validateVersion) {
+ // 不验证版本的更新
+ result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+ + NoteColumns.ID + "=?)", new String[] {
+ String.valueOf(mId)
+ });
+ } else {
+ // 验证版本的更新，防止冲突
+ result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+ + NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
+ new String[] {
+ String.valueOf(mId), String.valueOf(mVersion)
+ });
+ }
+ if (result == 0) {
+ Log.w(TAG, "there is no update. maybe user updates note when syncing");
+ }
+ }
+
+ // 提交便签关联的数据内容
+ if (mType == Notes.TYPE_NOTE) {
+ for (SqlData sqlData : mDataList) {
+ sqlData.commit(mId, validateVersion, mVersion);
+ }
+ }
+ }
+
+ // 刷新本地信息
+ loadFromCursor(mId);
+ if (mType == Notes.TYPE_NOTE)
+ loadDataContent();
+
+ // 清空变更记录并更新状态
+ mDiffNoteValues.clear();
+ mIsCreate = false;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/Task.java b/app/src/main/java/net/micode/notes/gtask/data/Task.java
new file mode 100644
index 0000000..e86f97a
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/Task.java
@@ -0,0 +1,462 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: Task.java
+ * 描述: Google Tasks任务数据模型类，表示单个任务项
+ * 作用: 提供Google Tasks任务的数据结构和操作方法，是Google Tasks同步功能的核心数据模型之一
+ */
+package net.micode.notes.gtask.data;
+
+import android.database.Cursor;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * Google Tasks任务数据模型类
+ *
+ * 继承自Node类，表示Google Tasks中的单个任务项
+ * 负责任务数据的存储、转换和同步操作
+ */
+public class Task extends Node {
+ /** 日志标签 */
+ private static final String TAG = Task.class.getSimpleName();
+
+ /** 任务完成状态 */
+ private boolean mCompleted;
+
+ /** 任务备注内容 */
+ private String mNotes;
+
+ /** 任务元数据信息，存储为JSON格式 */
+ private JSONObject mMetaInfo;
+
+ /** 前一个兄弟任务 */
+ private Task mPriorSibling;
+
+ /** 所属任务列表 */
+ private TaskList mParent;
+
+ /**
+ * 构造函数，初始化任务对象
+ */
+ public Task() {
+ super();
+ mCompleted = false;
+ mNotes = null;
+ mPriorSibling = null;
+ mParent = null;
+ mMetaInfo = null;
+ }
+
+ /**
+ * 生成创建任务的JSON操作对象
+ *
+ * @param actionId 操作ID
+ * @return 创建任务的JSON操作对象
+ * @throws ActionFailureException 如果生成JSON对象失败
+ */
+ public JSONObject getCreateAction(int actionId) {
+ JSONObject js = new JSONObject();
+
+ try {
+ // action_type
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
+
+ // action_id
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+ // index
+ js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));
+
+ // entity_delta
+ JSONObject entity = new JSONObject();
+ entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+ entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
+ entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
+ GTaskStringUtils.GTASK_JSON_TYPE_TASK);
+ if (getNotes() != null) {
+ entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
+ }
+ js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+ // parent_id
+ js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());
+
+ // dest_parent_type
+ js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
+ GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
+
+ // list_id
+ js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());
+
+ // prior_sibling_id
+ if (mPriorSibling != null) {
+ js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
+ }
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to generate task-create jsonobject");
+ }
+
+ return js;
+ }
+
+ /**
+ * 生成更新任务的JSON操作对象
+ *
+ * @param actionId 操作ID
+ * @return 更新任务的JSON操作对象
+ * @throws ActionFailureException 如果生成JSON对象失败
+ */
+ public JSONObject getUpdateAction(int actionId) {
+ JSONObject js = new JSONObject();
+
+ try {
+ // action_type
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
+
+ // action_id
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+ // id
+ js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
+
+ // entity_delta
+ JSONObject entity = new JSONObject();
+ entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+ if (getNotes() != null) {
+ entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
+ }
+ entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
+ js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to generate task-update jsonobject");
+ }
+
+ return js;
+ }
+
+ /**
+ * 根据远程JSON数据设置任务内容
+ *
+ * @param js 远程JSON数据对象
+ * @throws ActionFailureException 如果解析JSON对象失败
+ */
+ public void setContentByRemoteJSON(JSONObject js) {
+ if (js != null) {
+ try {
+ // id
+ if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
+ setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
+ }
+
+ // last_modified
+ if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
+ setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
+ }
+
+ // name
+ if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
+ setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
+ }
+
+ // notes
+ if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
+ setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
+ }
+
+ // deleted
+ if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
+ setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
+ }
+
+ // completed
+ if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
+ setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
+ }
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to get task content from jsonobject");
+ }
+ }
+ }
+
+ /**
+ * 根据本地JSON数据设置任务内容
+ *
+ * @param js 本地JSON数据对象
+ */
+ public void setContentByLocalJSON(JSONObject js) {
+ if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
+ || !js.has(GTaskStringUtils.META_HEAD_DATA)) {
+ Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+ }
+
+ try {
+ // 获取便签和数据信息
+ JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+ JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+
+ // 验证便签类型
+ if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
+ Log.e(TAG, "invalid type");
+ return;
+ }
+
+ // 查找便签内容并设置为任务名称
+ for (int i = 0; i < dataArray.length(); i++) {
+ JSONObject data = dataArray.getJSONObject(i);
+ if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
+ setName(data.getString(DataColumns.CONTENT));
+ break;
+ }
+ }
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * 从任务内容生成本地JSON数据
+ *
+ * @return 本地JSON数据对象，如果生成失败则返回null
+ */
+ public JSONObject getLocalJSONFromContent() {
+ String name = getName();
+ try {
+ if (mMetaInfo == null) {
+ // 从网络创建的新任务
+ if (name == null) {
+ Log.w(TAG, "the note seems to be an empty one");
+ return null;
+ }
+
+ // 创建新的JSON数据结构
+ JSONObject js = new JSONObject();
+ JSONObject note = new JSONObject();
+ JSONArray dataArray = new JSONArray();
+ JSONObject data = new JSONObject();
+ data.put(DataColumns.CONTENT, name);
+ dataArray.put(data);
+ js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
+ note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
+ js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+ return js;
+ } else {
+ // 已同步的任务
+ JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+ JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+
+ // 更新便签内容
+ for (int i = 0; i < dataArray.length(); i++) {
+ JSONObject data = dataArray.getJSONObject(i);
+ if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
+ data.put(DataColumns.CONTENT, getName());
+ break;
+ }
+ }
+
+ note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
+ return mMetaInfo;
+ }
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ return null;
+ }
+ }
+
+ /**
+ * 设置任务元数据信息
+ *
+ * @param metaData 元数据对象
+ */
+ public void setMetaInfo(MetaData metaData) {
+ if (metaData != null && metaData.getNotes() != null) {
+ try {
+ mMetaInfo = new JSONObject(metaData.getNotes());
+ } catch (JSONException e) {
+ Log.w(TAG, e.toString());
+ mMetaInfo = null;
+ }
+ }
+ }
+
+ /**
+ * 获取任务的同步操作类型
+ *
+ * @param c 便签数据游标
+ * @return 同步操作类型
+ */
+ public int getSyncAction(Cursor c) {
+ try {
+ // 获取便签元数据信息
+ JSONObject noteInfo = null;
+ if (mMetaInfo != null && mMetaInfo.has(GTaskStringUtils.META_HEAD_NOTE)) {
+ noteInfo = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+ }
+
+ if (noteInfo == null) {
+ Log.w(TAG, "it seems that note meta has been deleted");
+ return SYNC_ACTION_UPDATE_REMOTE;
+ }
+
+ if (!noteInfo.has(NoteColumns.ID)) {
+ Log.w(TAG, "remote note id seems to be deleted");
+ return SYNC_ACTION_UPDATE_LOCAL;
+ }
+
+ // 验证便签ID
+ if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
+ Log.w(TAG, "note id doesn't match");
+ return SYNC_ACTION_UPDATE_LOCAL;
+ }
+
+ if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
+ // 本地没有更新
+ if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+ // 两端都没有更新
+ return SYNC_ACTION_NONE;
+ } else {
+ // 应用远程更新到本地
+ return SYNC_ACTION_UPDATE_LOCAL;
+ }
+ } else {
+ // 验证Google Tasks ID
+ if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
+ Log.e(TAG, "gtask id doesn't match");
+ return SYNC_ACTION_ERROR;
+ }
+ if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+ // 仅本地修改
+ return SYNC_ACTION_UPDATE_REMOTE;
+ } else {
+ // 两端都有修改，存在冲突
+ return SYNC_ACTION_UPDATE_CONFLICT;
+ }
+ }
+ } catch (Exception e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ }
+
+ return SYNC_ACTION_ERROR;
+ }
+
+ /**
+ * 检查任务是否值得保存
+ *
+ * @return 如果任务有元数据或非空内容则返回true，否则返回false
+ */
+ public boolean isWorthSaving() {
+ return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
+ || (getNotes() != null && getNotes().trim().length() > 0);
+ }
+
+ /**
+ * 设置任务完成状态
+ *
+ * @param completed 完成状态
+ */
+ public void setCompleted(boolean completed) {
+ this.mCompleted = completed;
+ }
+
+ /**
+ * 设置任务备注内容
+ *
+ * @param notes 备注内容
+ */
+ public void setNotes(String notes) {
+ this.mNotes = notes;
+ }
+
+ /**
+ * 设置前一个兄弟任务
+ *
+ * @param priorSibling 前一个兄弟任务
+ */
+ public void setPriorSibling(Task priorSibling) {
+ this.mPriorSibling = priorSibling;
+ }
+
+ /**
+ * 设置所属任务列表
+ *
+ * @param parent 所属任务列表
+ */
+ public void setParent(TaskList parent) {
+ this.mParent = parent;
+ }
+
+ /**
+ * 获取任务完成状态
+ *
+ * @return 任务完成状态
+ */
+ public boolean getCompleted() {
+ return this.mCompleted;
+ }
+
+ /**
+ * 获取任务备注内容
+ *
+ * @return 任务备注内容
+ */
+ public String getNotes() {
+ return this.mNotes;
+ }
+
+ /**
+ * 获取前一个兄弟任务
+ *
+ * @return 前一个兄弟任务
+ */
+ public Task getPriorSibling() {
+ return this.mPriorSibling;
+ }
+
+ /**
+ * 获取所属任务列表
+ *
+ * @return 所属任务列表
+ */
+ public TaskList getParent() {
+ return this.mParent;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/data/TaskList.java b/app/src/main/java/net/micode/notes/gtask/data/TaskList.java
new file mode 100644
index 0000000..73f3487
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/data/TaskList.java
@@ -0,0 +1,469 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: TaskList.java
+ * 描述: 任务列表数据模型，对应Google Tasks中的任务列表
+ * 作用: 管理任务列表及其包含的任务，处理任务列表的创建、更新、同步等操作
+ */
+package net.micode.notes.gtask.data;
+
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+
+/**
+ * 任务列表类
+ *
+ * 该类表示Google Tasks中的任务列表，继承自Node基类。
+ * 负责管理任务列表及其包含的任务，提供任务列表的创建、更新、同步等功能，
+ * 以及任务的添加、删除、移动等操作。
+ *
+ * 在应用中，任务列表对应便签应用中的文件夹，用于组织和管理便签。
+ */
+public class TaskList extends Node {
+ /** 日志标签 */
+ private static final String TAG = TaskList.class.getSimpleName();
+
+ /** 任务列表索引 */
+ private int mIndex;
+
+ /** 子任务列表 */
+ private ArrayList mChildren;
+
+ /**
+ * 构造函数
+ * 初始化任务列表对象
+ */
+ public TaskList() {
+ super();
+ mChildren = new ArrayList();
+ mIndex = 1;
+ }
+
+ /**
+ * 生成创建任务列表的JSON操作对象
+ *
+ * @param actionId 操作ID
+ * @return 创建任务列表的JSON操作对象
+ */
+ public JSONObject getCreateAction(int actionId) {
+ JSONObject js = new JSONObject();
+
+ try {
+ // 设置操作类型为创建
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
+
+ // 设置操作ID
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+ // 设置索引
+ js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
+
+ // 设置实体数据
+ JSONObject entity = new JSONObject();
+ entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+ entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
+ entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
+ GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
+ js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to generate tasklist-create jsonobject");
+ }
+
+ return js;
+ }
+
+ /**
+ * 生成更新任务列表的JSON操作对象
+ *
+ * @param actionId 操作ID
+ * @return 更新任务列表的JSON操作对象
+ */
+ public JSONObject getUpdateAction(int actionId) {
+ JSONObject js = new JSONObject();
+
+ try {
+ // 设置操作类型为更新
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
+
+ // 设置操作ID
+ js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+ // 设置任务列表ID
+ js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
+
+ // 设置实体数据
+ JSONObject entity = new JSONObject();
+ entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+ entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
+ js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to generate tasklist-update jsonobject");
+ }
+
+ return js;
+ }
+
+ /**
+ * 从远程JSON数据设置任务列表内容
+ *
+ * @param js 远程JSON数据
+ */
+ public void setContentByRemoteJSON(JSONObject js) {
+ if (js != null) {
+ try {
+ // 设置ID
+ if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
+ setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
+ }
+
+ // 设置最后修改时间
+ if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
+ setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
+ }
+
+ // 设置名称
+ if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
+ setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
+ }
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("fail to get tasklist content from jsonobject");
+ }
+ }
+ }
+
+ /**
+ * 从本地JSON数据设置任务列表内容
+ *
+ * @param js 本地JSON数据
+ */
+ public void setContentByLocalJSON(JSONObject js) {
+ if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
+ Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+ }
+
+ try {
+ JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+
+ // 根据便签类型设置任务列表名称
+ if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
+ String name = folder.getString(NoteColumns.SNIPPET);
+ setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
+ } else if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
+ if (folder.getLong(NoteColumns.ID) == Notes.ID_ROOT_FOLDER)
+ setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT);
+ else if (folder.getLong(NoteColumns.ID) == Notes.ID_CALL_RECORD_FOLDER)
+ setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ + GTaskStringUtils.FOLDER_CALL_NOTE);
+ else
+ Log.e(TAG, "invalid system folder");
+ } else {
+ Log.e(TAG, "error type");
+ }
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * 从任务列表内容生成本地JSON数据
+ *
+ * @return 本地JSON数据
+ */
+ public JSONObject getLocalJSONFromContent() {
+ try {
+ JSONObject js = new JSONObject();
+ JSONObject folder = new JSONObject();
+
+ // 提取文件夹名称并设置类型
+ String folderName = getName();
+ if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
+ folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
+ folderName.length());
+ folder.put(NoteColumns.SNIPPET, folderName);
+ if (folderName.equals(GTaskStringUtils.FOLDER_DEFAULT)
+ || folderName.equals(GTaskStringUtils.FOLDER_CALL_NOTE))
+ folder.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+ else
+ folder.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
+
+ js.put(GTaskStringUtils.META_HEAD_NOTE, folder);
+
+ return js;
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ return null;
+ }
+ }
+
+ /**
+ * 获取同步操作类型
+ * 根据本地和远程数据的状态确定同步操作类型
+ *
+ * @param c 本地数据游标
+ * @return 同步操作类型
+ */
+ public int getSyncAction(Cursor c) {
+ try {
+ if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
+ // 本地未修改
+ if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+ // 双方都未更新
+ return SYNC_ACTION_NONE;
+ } else {
+ // 应用远程更新到本地
+ return SYNC_ACTION_UPDATE_LOCAL;
+ }
+ } else {
+ // 验证Google任务ID
+ if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
+ Log.e(TAG, "gtask id doesn't match");
+ return SYNC_ACTION_ERROR;
+ }
+ if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+ // 仅本地修改
+ return SYNC_ACTION_UPDATE_REMOTE;
+ } else {
+ // 对于文件夹冲突，应用本地修改
+ return SYNC_ACTION_UPDATE_REMOTE;
+ }
+ }
+ } catch (Exception e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ }
+
+ return SYNC_ACTION_ERROR;
+ }
+
+ /**
+ * 获取子任务数量
+ *
+ * @return 子任务数量
+ */
+ public int getChildTaskCount() {
+ return mChildren.size();
+ }
+
+ /**
+ * 添加子任务到任务列表末尾
+ *
+ * @param task 要添加的任务
+ * @return 添加是否成功
+ */
+ public boolean addChildTask(Task task) {
+ boolean ret = false;
+ if (task != null && !mChildren.contains(task)) {
+ ret = mChildren.add(task);
+ if (ret) {
+ // 设置任务的前一个兄弟任务和父任务
+ task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
+ .get(mChildren.size() - 1));
+ task.setParent(this);
+ }
+ }
+ return ret;
+ }
+
+ /**
+ * 在指定位置添加子任务
+ *
+ * @param task 要添加的任务
+ * @param index 添加位置
+ * @return 添加是否成功
+ */
+ public boolean addChildTask(Task task, int index) {
+ if (index < 0 || index > mChildren.size()) {
+ Log.e(TAG, "add child task: invalid index");
+ return false;
+ }
+
+ int pos = mChildren.indexOf(task);
+ if (task != null && pos == -1) {
+ mChildren.add(index, task);
+
+ // 更新任务列表关系
+ Task preTask = null;
+ Task afterTask = null;
+ if (index != 0)
+ preTask = mChildren.get(index - 1);
+ if (index != mChildren.size() - 1)
+ afterTask = mChildren.get(index + 1);
+
+ task.setPriorSibling(preTask);
+ if (afterTask != null)
+ afterTask.setPriorSibling(task);
+ }
+
+ return true;
+ }
+
+ /**
+ * 从任务列表中移除子任务
+ *
+ * @param task 要移除的任务
+ * @return 移除是否成功
+ */
+ public boolean removeChildTask(Task task) {
+ boolean ret = false;
+ int index = mChildren.indexOf(task);
+ if (index != -1) {
+ ret = mChildren.remove(task);
+
+ if (ret) {
+ // 重置前一个兄弟任务和父任务
+ task.setPriorSibling(null);
+ task.setParent(null);
+
+ // 更新任务列表
+ if (index != mChildren.size()) {
+ mChildren.get(index).setPriorSibling(
+ index == 0 ? null : mChildren.get(index - 1));
+ }
+ }
+ }
+ return ret;
+ }
+
+ /**
+ * 移动子任务到指定位置
+ *
+ * @param task 要移动的任务
+ * @param index 目标位置
+ * @return 移动是否成功
+ */
+ public boolean moveChildTask(Task task, int index) {
+
+ if (index < 0 || index >= mChildren.size()) {
+ Log.e(TAG, "move child task: invalid index");
+ return false;
+ }
+
+ int pos = mChildren.indexOf(task);
+ if (pos == -1) {
+ Log.e(TAG, "move child task: the task should in the list");
+ return false;
+ }
+
+ if (pos == index)
+ return true;
+ return (removeChildTask(task) && addChildTask(task, index));
+ }
+
+ /**
+ * 根据Google任务ID查找子任务
+ *
+ * @param gid Google任务ID
+ * @return 找到的任务，未找到返回null
+ */
+ public Task findChildTaskByGid(String gid) {
+ for (int i = 0; i < mChildren.size(); i++) {
+ Task t = mChildren.get(i);
+ if (t.getGid().equals(gid)) {
+ return t;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * 获取子任务在列表中的索引
+ *
+ * @param task 子任务
+ * @return 任务索引，不存在返回-1
+ */
+ public int getChildTaskIndex(Task task) {
+ return mChildren.indexOf(task);
+ }
+
+ /**
+ * 根据索引获取子任务
+ *
+ * @param index 任务索引
+ * @return 子任务，索引无效返回null
+ */
+ public Task getChildTaskByIndex(int index) {
+ if (index < 0 || index >= mChildren.size()) {
+ Log.e(TAG, "getTaskByIndex: invalid index");
+ return null;
+ }
+ return mChildren.get(index);
+ }
+
+ /**
+ * 根据Google任务ID获取子任务
+ *
+ * @param gid Google任务ID
+ * @return 子任务，未找到返回null
+ */
+ public Task getChilTaskByGid(String gid) {
+ for (Task task : mChildren) {
+ if (task.getGid().equals(gid))
+ return task;
+ }
+ return null;
+ }
+
+ /**
+ * 获取所有子任务列表
+ *
+ * @return 子任务列表
+ */
+ public ArrayList getChildTaskList() {
+ return this.mChildren;
+ }
+
+ /**
+ * 设置任务列表索引
+ *
+ * @param index 索引值
+ */
+ public void setIndex(int index) {
+ this.mIndex = index;
+ }
+
+ /**
+ * 获取任务列表索引
+ *
+ * @return 索引值
+ */
+ public int getIndex() {
+ return this.mIndex;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/exception/ActionFailureException.java b/app/src/main/java/net/micode/notes/gtask/exception/ActionFailureException.java
new file mode 100644
index 0000000..05d4d3e
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/exception/ActionFailureException.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: ActionFailureException.java
+ * 描述: 操作失败异常类，用于处理Google Tasks同步过程中的操作失败情况
+ * 作用: 提供一个专门的异常类型，用于标识和处理Google Tasks同步操作中的各种失败情况
+ */
+package net.micode.notes.gtask.exception;
+
+/**
+ * 操作失败异常类
+ *
+ * 继承自RuntimeException，表示在Google Tasks同步过程中发生的操作失败
+ * 这是一个运行时异常，不需要强制捕获，通常用于表示程序逻辑错误或不可恢复的错误
+ */
+public class ActionFailureException extends RuntimeException {
+ /** 序列化版本ID */
+ private static final long serialVersionUID = 4425249765923293627L;
+
+ /**
+ * 默认构造函数
+ * 创建一个没有详细信息的操作失败异常
+ */
+ public ActionFailureException() {
+ super();
+ }
+
+ /**
+ * 带有错误信息的构造函数
+ *
+ * @param paramString 描述异常的错误信息
+ */
+ public ActionFailureException(String paramString) {
+ super(paramString);
+ }
+
+ /**
+ * 带有错误信息和原因的构造函数
+ *
+ * @param paramString 描述异常的错误信息
+ * @param paramThrowable 导致此异常的原始异常
+ */
+ public ActionFailureException(String paramString, Throwable paramThrowable) {
+ super(paramString, paramThrowable);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/exception/NetworkFailureException.java b/app/src/main/java/net/micode/notes/gtask/exception/NetworkFailureException.java
new file mode 100644
index 0000000..94ac11d
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/exception/NetworkFailureException.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NetworkFailureException.java
+ * 描述: 网络失败异常类，用于处理Google Tasks同步过程中的网络错误
+ * 作用: 提供一个专门的异常类型，用于标识和处理Google Tasks同步过程中的网络连接问题
+ */
+package net.micode.notes.gtask.exception;
+
+/**
+ * 网络失败异常类
+ *
+ * 继承自Exception，表示在Google Tasks同步过程中发生的网络连接失败
+ * 这是一个检查型异常，需要显式捕获或声明抛出，通常用于表示可能恢复的错误情况
+ */
+public class NetworkFailureException extends Exception {
+ /** 序列化版本ID */
+ private static final long serialVersionUID = 2107610287180234136L;
+
+ /**
+ * 默认构造函数
+ * 创建一个没有详细信息的网络失败异常
+ */
+ public NetworkFailureException() {
+ super();
+ }
+
+ /**
+ * 带有错误信息的构造函数
+ *
+ * @param paramString 描述异常的错误信息
+ */
+ public NetworkFailureException(String paramString) {
+ super(paramString);
+ }
+
+ /**
+ * 带有错误信息和原因的构造函数
+ *
+ * @param paramString 描述异常的错误信息
+ * @param paramThrowable 导致此异常的原始异常
+ */
+ public NetworkFailureException(String paramString, Throwable paramThrowable) {
+ super(paramString, paramThrowable);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/remote/GTaskASyncTask.java b/app/src/main/java/net/micode/notes/gtask/remote/GTaskASyncTask.java
new file mode 100644
index 0000000..15dbfb4
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/remote/GTaskASyncTask.java
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: GTaskASyncTask.java
+ * 描述: Google Tasks异步任务类，负责在后台线程执行同步操作
+ * 作用: 提供异步同步功能，避免在UI线程执行耗时的网络和同步操作，并显示同步进度通知
+ */
+package net.micode.notes.gtask.remote;
+
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesListActivity;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+/**
+ * Google Tasks异步任务类
+ *
+ * 该类继承自AsyncTask，用于在后台线程执行Google Tasks同步操作，
+ * 避免阻塞UI线程，并通过通知栏显示同步进度和结果。
+ *
+ * 主要功能：
+ * 1. 在后台线程执行同步操作
+ * 2. 显示同步进度通知
+ * 3. 处理同步结果和错误
+ * 4. 支持取消同步操作
+ */
+public class GTaskASyncTask extends AsyncTask {
+
+ /** 同步通知的唯一ID */
+ private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
+
+ /**
+ * 同步完成监听器接口
+ * 用于通知调用者同步操作已完成
+ */
+ public interface OnCompleteListener {
+ /**
+ * 当同步操作完成时调用
+ */
+ void onComplete();
+ }
+
+ /** 应用上下文 */
+ private Context mContext;
+
+ /** 通知管理器 */
+ private NotificationManager mNotifiManager;
+
+ /** Google Tasks同步管理器 */
+ private GTaskManager mTaskManager;
+
+ /** 同步完成监听器 */
+ private OnCompleteListener mOnCompleteListener;
+
+ /**
+ * 构造函数
+ *
+ * @param context 应用上下文
+ * @param listener 同步完成监听器
+ */
+ public GTaskASyncTask(Context context, OnCompleteListener listener) {
+ mContext = context;
+ mOnCompleteListener = listener;
+ mNotifiManager = (NotificationManager) mContext
+ .getSystemService(Context.NOTIFICATION_SERVICE);
+ mTaskManager = GTaskManager.getInstance();
+ }
+
+ /**
+ * 取消同步操作
+ * 通知GTaskManager取消正在进行的同步
+ */
+ public void cancelSync() {
+ mTaskManager.cancelSync();
+ }
+
+ /**
+ * 发布同步进度
+ *
+ * @param message 进度消息
+ */
+ public void publishProgess(String message) {
+ publishProgress(new String[] {
+ message
+ });
+ }
+
+ /**
+ * 显示同步通知
+ *
+ * @param tickerId 通知标题资源ID
+ * @param content 通知内容
+ */
+ private void showNotification(int tickerId, String content) {
+ PendingIntent pendingIntent;
+ if (tickerId != R.string.ticker_success) {
+ pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
+ NotesPreferenceActivity.class), PendingIntent.FLAG_IMMUTABLE);
+
+ } else {
+ pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
+ NotesListActivity.class), PendingIntent.FLAG_IMMUTABLE);
+ }
+
+ // 使用现代通知构建器（支持API 21+）
+ Notification notification = new Notification.Builder(mContext)
+ .setContentTitle(mContext.getString(R.string.app_name))
+ .setContentText(content)
+ .setContentIntent(pendingIntent)
+ .setSmallIcon(R.drawable.notification)
+ .setDefaults(Notification.DEFAULT_LIGHTS)
+ .setAutoCancel(true)
+ .build();
+
+ mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
+ }
+
+ /**
+ * 在后台线程执行同步操作
+ *
+ * @param unused 未使用的参数
+ * @return 同步结果状态码
+ */
+ @Override
+ protected Integer doInBackground(Void... unused) {
+ publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
+ .getSyncAccountName(mContext)));
+ return mTaskManager.sync(mContext, this);
+ }
+
+ /**
+ * 更新同步进度
+ * 在UI线程中显示同步进度通知
+ *
+ * @param progress 进度信息
+ */
+ @Override
+ protected void onProgressUpdate(String... progress) {
+ showNotification(R.string.ticker_syncing, progress[0]);
+ if (mContext instanceof GTaskSyncService) {
+ ((GTaskSyncService) mContext).sendBroadcast(progress[0]);
+ }
+ }
+
+ /**
+ * 处理同步完成事件
+ * 根据同步结果显示相应通知，并调用完成监听器
+ *
+ * @param result 同步结果状态码
+ */
+ @Override
+ protected void onPostExecute(Integer result) {
+ if (result == GTaskManager.STATE_SUCCESS) {
+ showNotification(R.string.ticker_success, mContext.getString(
+ R.string.success_sync_account, mTaskManager.getSyncAccount()));
+ NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
+ } else if (result == GTaskManager.STATE_NETWORK_ERROR) {
+ showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));
+ } else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
+ showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));
+ } else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
+ showNotification(R.string.ticker_cancel, mContext
+ .getString(R.string.error_sync_cancelled));
+ }
+ if (mOnCompleteListener != null) {
+ new Thread(new Runnable() {
+
+ public void run() {
+ mOnCompleteListener.onComplete();
+ }
+ }).start();
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/remote/GTaskClient.java b/app/src/main/java/net/micode/notes/gtask/remote/GTaskClient.java
new file mode 100644
index 0000000..5246289
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/remote/GTaskClient.java
@@ -0,0 +1,654 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: GTaskClient.java
+ * 描述: Google Tasks客户端，负责与Google Tasks API进行通信
+ * 作用: 提供与Google Tasks服务器交互的接口，包括登录认证、数据请求和操作提交等功能
+ */
+package net.micode.notes.gtask.remote;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.accounts.AccountManagerFuture;
+import android.app.Activity;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.gtask.data.Node;
+import net.micode.notes.gtask.data.Task;
+import net.micode.notes.gtask.data.TaskList;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.gtask.exception.NetworkFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.ClientProtocolException;
+import org.apache.http.client.entity.UrlEncodedFormEntity;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.cookie.Cookie;
+import org.apache.http.impl.client.BasicCookieStore;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.http.message.BasicNameValuePair;
+import org.apache.http.params.BasicHttpParams;
+import org.apache.http.params.HttpConnectionParams;
+import org.apache.http.params.HttpParams;
+import org.apache.http.params.HttpProtocolParams;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.Inflater;
+import java.util.zip.InflaterInputStream;
+
+/**
+ * Google Tasks客户端类
+ *
+ * 该类负责与Google Tasks API进行通信，提供登录认证、数据请求和操作提交等功能。
+ * 使用单例模式确保全局只有一个客户端实例，管理与Google Tasks服务器的连接和会话。
+ *
+ * 主要功能包括：
+ * 1. Google账户认证和登录
+ * 2. 获取任务列表和任务数据
+ * 3. 创建、更新和删除任务及任务列表
+ * 4. 处理HTTP请求和响应
+ */
+public class GTaskClient {
+ /** 日志标签 */
+ private static final String TAG = GTaskClient.class.getSimpleName();
+
+ /** Google Tasks基础URL */
+ private static final String GTASK_URL = "https://mail.google.com/tasks/";
+
+ /** Google Tasks GET请求URL */
+ private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
+
+ /** Google Tasks POST请求URL */
+ private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
+
+ /** 单例实例 */
+ private static GTaskClient mInstance = null;
+
+ /** HTTP客户端 */
+ private DefaultHttpClient mHttpClient;
+
+ /** GET请求URL */
+ private String mGetUrl;
+
+ /** POST请求URL */
+ private String mPostUrl;
+
+ /** 客户端版本号 */
+ private long mClientVersion;
+
+ /** 登录状态标志 */
+ private boolean mLoggedin;
+
+ /** 最后登录时间 */
+ private long mLastLoginTime;
+
+ /** 操作ID计数器 */
+ private int mActionId;
+
+ /** Google账户 */
+ private Account mAccount;
+
+ /** 更新操作数组 */
+ private JSONArray mUpdateArray;
+
+ /**
+ * 私有构造函数，初始化Google Tasks客户端
+ * 遵循单例模式，只能通过getInstance方法获取实例
+ */
+ private GTaskClient() {
+ mHttpClient = null;
+ mGetUrl = GTASK_GET_URL;
+ mPostUrl = GTASK_POST_URL;
+ mClientVersion = -1;
+ mLoggedin = false;
+ mLastLoginTime = 0;
+ mActionId = 1;
+ mAccount = null;
+ mUpdateArray = null;
+ }
+
+ /**
+ * 获取GTaskClient的单例实例
+ *
+ * @return GTaskClient的单例实例
+ */
+ public static synchronized GTaskClient getInstance() {
+ if (mInstance == null) {
+ mInstance = new GTaskClient();
+ }
+ return mInstance;
+ }
+
+ /**
+ * 登录Google Tasks服务
+ *
+ * @param activity 用于获取账户授权的活动
+ * @return 登录是否成功
+ */
+ public boolean login(Activity activity) {
+ // 检查登录会话是否过期（5分钟）
+ final long interval = 1000 * 60 * 5;
+ if (mLastLoginTime + interval < System.currentTimeMillis()) {
+ mLoggedin = false;
+ }
+
+ // 切换账户后需要重新登录
+ if (mLoggedin
+ && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
+ .getSyncAccountName(activity))) {
+ mLoggedin = false;
+ }
+
+ // 如果已登录，直接返回
+ if (mLoggedin) {
+ Log.d(TAG, "already logged in");
+ return true;
+ }
+
+ // 更新最后登录时间并获取授权令牌
+ mLastLoginTime = System.currentTimeMillis();
+ String authToken = loginGoogleAccount(activity, false);
+ if (authToken == null) {
+ Log.e(TAG, "login google account failed");
+ return false;
+ }
+
+ // 如果是自定义域名账户，需要特殊处理
+ if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()
+ .endsWith("googlemail.com"))) {
+ StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
+ int index = mAccount.name.indexOf('@') + 1;
+ String suffix = mAccount.name.substring(index);
+ url.append(suffix + "/");
+ mGetUrl = url.toString() + "ig";
+ mPostUrl = url.toString() + "r/ig";
+
+ if (tryToLoginGtask(activity, authToken)) {
+ mLoggedin = true;
+ }
+ }
+
+ // 尝试使用官方URL登录
+ if (!mLoggedin) {
+ mGetUrl = GTASK_GET_URL;
+ mPostUrl = GTASK_POST_URL;
+ if (!tryToLoginGtask(activity, authToken)) {
+ return false;
+ }
+ }
+
+ mLoggedin = true;
+ return true;
+ }
+
+ /**
+ * 登录Google账户并获取授权令牌
+ *
+ * @param activity 用于获取账户授权的活动
+ * @param invalidateToken 是否使当前令牌失效并重新获取
+ * @return 授权令牌，失败返回null
+ */
+ private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
+ String authToken;
+ AccountManager accountManager = AccountManager.get(activity);
+ Account[] accounts = accountManager.getAccountsByType("com.google");
+
+ // 检查是否有可用的Google账户
+ if (accounts.length == 0) {
+ Log.e(TAG, "there is no available google account");
+ return null;
+ }
+
+ // 根据设置中的账户名找到对应账户
+ String accountName = NotesPreferenceActivity.getSyncAccountName(activity);
+ Account account = null;
+ for (Account a : accounts) {
+ if (a.name.equals(accountName)) {
+ account = a;
+ break;
+ }
+ }
+ if (account != null) {
+ mAccount = account;
+ } else {
+ Log.e(TAG, "unable to get an account with the same name in the settings");
+ return null;
+ }
+
+ // 获取授权令牌
+ AccountManagerFuture accountManagerFuture = accountManager.getAuthToken(account,
+ "goanna_mobile", null, activity, null, null);
+ try {
+ Bundle authTokenBundle = accountManagerFuture.getResult();
+ authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN);
+ if (invalidateToken) {
+ // 使令牌失效并重新获取
+ accountManager.invalidateAuthToken("com.google", authToken);
+ loginGoogleAccount(activity, false);
+ }
+ } catch (Exception e) {
+ Log.e(TAG, "get auth token failed");
+ authToken = null;
+ }
+
+ return authToken;
+ }
+
+ /**
+ * 尝试登录Google Tasks服务
+ *
+ * @param activity 用于获取账户授权的活动
+ * @param authToken 授权令牌
+ * @return 登录是否成功
+ */
+ private boolean tryToLoginGtask(Activity activity, String authToken) {
+ if (!loginGtask(authToken)) {
+ // 如果令牌过期，使其失效并重新尝试
+ authToken = loginGoogleAccount(activity, true);
+ if (authToken == null) {
+ Log.e(TAG, "login google account failed");
+ return false;
+ }
+
+ if (!loginGtask(authToken)) {
+ Log.e(TAG, "login gtask failed");
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * 使用授权令牌登录Google Tasks服务
+ *
+ * @param authToken 授权令牌
+ * @return 登录是否成功
+ */
+ private boolean loginGtask(String authToken) {
+ // 设置HTTP连接参数
+ int timeoutConnection = 10000;
+ int timeoutSocket = 15000;
+ HttpParams httpParameters = new BasicHttpParams();
+ HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
+ HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
+ mHttpClient = new DefaultHttpClient(httpParameters);
+ BasicCookieStore localBasicCookieStore = new BasicCookieStore();
+ mHttpClient.setCookieStore(localBasicCookieStore);
+ HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
+
+ // 登录Google Tasks
+ try {
+ String loginUrl = mGetUrl + "?auth=" + authToken;
+ HttpGet httpGet = new HttpGet(loginUrl);
+ HttpResponse response = null;
+ response = mHttpClient.execute(httpGet);
+
+ // 获取认证Cookie
+ List cookies = mHttpClient.getCookieStore().getCookies();
+ boolean hasAuthCookie = false;
+ for (Cookie cookie : cookies) {
+ if (cookie.getName().contains("GTL")) {
+ hasAuthCookie = true;
+ }
+ }
+ if (!hasAuthCookie) {
+ Log.w(TAG, "it seems that there is no auth cookie");
+ }
+
+ // 获取客户端版本号
+ String resString = getResponseContent(response.getEntity());
+ String jsBegin = "_setup(";
+ String jsEnd = ")}";
+ int begin = resString.indexOf(jsBegin);
+ int end = resString.lastIndexOf(jsEnd);
+ String jsString = null;
+ if (begin != -1 && end != -1 && begin < end) {
+ jsString = resString.substring(begin + jsBegin.length(), end);
+ }
+ JSONObject js = new JSONObject(jsString);
+ mClientVersion = js.getLong("v");
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ return false;
+ } catch (Exception e) {
+ // 捕获所有异常
+ Log.e(TAG, "httpget gtask_url failed");
+ return false;
+ }
+
+ return true;
+ }
+
+ private int getActionId() {
+ return mActionId++;
+ }
+
+ private HttpPost createHttpPost() {
+ HttpPost httpPost = new HttpPost(mPostUrl);
+ httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
+ httpPost.setHeader("AT", "1");
+ return httpPost;
+ }
+
+ private String getResponseContent(HttpEntity entity) throws IOException {
+ String contentEncoding = null;
+ if (entity.getContentEncoding() != null) {
+ contentEncoding = entity.getContentEncoding().getValue();
+ Log.d(TAG, "encoding: " + contentEncoding);
+ }
+
+ InputStream input = entity.getContent();
+ if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
+ input = new GZIPInputStream(entity.getContent());
+ } else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {
+ Inflater inflater = new Inflater(true);
+ input = new InflaterInputStream(entity.getContent(), inflater);
+ }
+
+ try {
+ InputStreamReader isr = new InputStreamReader(input);
+ BufferedReader br = new BufferedReader(isr);
+ StringBuilder sb = new StringBuilder();
+
+ while (true) {
+ String buff = br.readLine();
+ if (buff == null) {
+ return sb.toString();
+ }
+ sb = sb.append(buff);
+ }
+ } finally {
+ input.close();
+ }
+ }
+
+ private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
+ if (!mLoggedin) {
+ Log.e(TAG, "please login first");
+ throw new ActionFailureException("not logged in");
+ }
+
+ HttpPost httpPost = createHttpPost();
+ try {
+ LinkedList list = new LinkedList();
+ list.add(new BasicNameValuePair("r", js.toString()));
+ UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
+ httpPost.setEntity(entity);
+
+ // execute the post
+ HttpResponse response = mHttpClient.execute(httpPost);
+ String jsString = getResponseContent(response.getEntity());
+ return new JSONObject(jsString);
+
+ } catch (ClientProtocolException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new NetworkFailureException("postRequest failed");
+ } catch (IOException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new NetworkFailureException("postRequest failed");
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("unable to convert response content to jsonobject");
+ } catch (Exception e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("error occurs when posting request");
+ }
+ }
+
+ public void createTask(Task task) throws NetworkFailureException {
+ commitUpdate();
+ try {
+ JSONObject jsPost = new JSONObject();
+ JSONArray actionList = new JSONArray();
+
+ // action_list
+ actionList.put(task.getCreateAction(getActionId()));
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+ // client_version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ // post
+ JSONObject jsResponse = postRequest(jsPost);
+ JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
+ GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
+ task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("create task: handing jsonobject failed");
+ }
+ }
+
+ public void createTaskList(TaskList tasklist) throws NetworkFailureException {
+ commitUpdate();
+ try {
+ JSONObject jsPost = new JSONObject();
+ JSONArray actionList = new JSONArray();
+
+ // action_list
+ actionList.put(tasklist.getCreateAction(getActionId()));
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+ // client version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ // post
+ JSONObject jsResponse = postRequest(jsPost);
+ JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
+ GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
+ tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("create tasklist: handing jsonobject failed");
+ }
+ }
+
+ public void commitUpdate() throws NetworkFailureException {
+ if (mUpdateArray != null) {
+ try {
+ JSONObject jsPost = new JSONObject();
+
+ // action_list
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
+
+ // client_version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ postRequest(jsPost);
+ mUpdateArray = null;
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("commit update: handing jsonobject failed");
+ }
+ }
+ }
+
+ public void addUpdateNode(Node node) throws NetworkFailureException {
+ if (node != null) {
+ // too many update items may result in an error
+ // set max to 10 items
+ if (mUpdateArray != null && mUpdateArray.length() > 10) {
+ commitUpdate();
+ }
+
+ if (mUpdateArray == null)
+ mUpdateArray = new JSONArray();
+ mUpdateArray.put(node.getUpdateAction(getActionId()));
+ }
+ }
+
+ public void moveTask(Task task, TaskList preParent, TaskList curParent)
+ throws NetworkFailureException {
+ commitUpdate();
+ try {
+ JSONObject jsPost = new JSONObject();
+ JSONArray actionList = new JSONArray();
+ JSONObject action = new JSONObject();
+
+ // action_list
+ action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
+ action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
+ action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
+ if (preParent == curParent && task.getPriorSibling() != null) {
+ // put prioring_sibing_id only if moving within the tasklist and
+ // it is not the first one
+ action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
+ }
+ action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());
+ action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());
+ if (preParent != curParent) {
+ // put the dest_list only if moving between tasklists
+ action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
+ }
+ actionList.put(action);
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+ // client_version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ postRequest(jsPost);
+
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("move task: handing jsonobject failed");
+ }
+ }
+
+ public void deleteNode(Node node) throws NetworkFailureException {
+ commitUpdate();
+ try {
+ JSONObject jsPost = new JSONObject();
+ JSONArray actionList = new JSONArray();
+
+ // action_list
+ node.setDeleted(true);
+ actionList.put(node.getUpdateAction(getActionId()));
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+ // client_version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ postRequest(jsPost);
+ mUpdateArray = null;
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("delete node: handing jsonobject failed");
+ }
+ }
+
+ public JSONArray getTaskLists() throws NetworkFailureException {
+ if (!mLoggedin) {
+ Log.e(TAG, "please login first");
+ throw new ActionFailureException("not logged in");
+ }
+
+ try {
+ HttpGet httpGet = new HttpGet(mGetUrl);
+ HttpResponse response = null;
+ response = mHttpClient.execute(httpGet);
+
+ // get the task list
+ String resString = getResponseContent(response.getEntity());
+ String jsBegin = "_setup(";
+ String jsEnd = ")}";
+ int begin = resString.indexOf(jsBegin);
+ int end = resString.lastIndexOf(jsEnd);
+ String jsString = null;
+ if (begin != -1 && end != -1 && begin < end) {
+ jsString = resString.substring(begin + jsBegin.length(), end);
+ }
+ JSONObject js = new JSONObject(jsString);
+ return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS);
+ } catch (ClientProtocolException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new NetworkFailureException("gettasklists: httpget failed");
+ } catch (IOException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new NetworkFailureException("gettasklists: httpget failed");
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("get task lists: handing jasonobject failed");
+ }
+ }
+
+ public JSONArray getTaskList(String listGid) throws NetworkFailureException {
+ commitUpdate();
+ try {
+ JSONObject jsPost = new JSONObject();
+ JSONArray actionList = new JSONArray();
+ JSONObject action = new JSONObject();
+
+ // action_list
+ action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+ GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
+ action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
+ action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid);
+ action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false);
+ actionList.put(action);
+ jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+ // client_version
+ jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+ JSONObject jsResponse = postRequest(jsPost);
+ return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS);
+ } catch (JSONException e) {
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("get task list: handing jsonobject failed");
+ }
+ }
+
+ public Account getSyncAccount() {
+ return mAccount;
+ }
+
+ public void resetUpdateArray() {
+ mUpdateArray = null;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/remote/GTaskManager.java b/app/src/main/java/net/micode/notes/gtask/remote/GTaskManager.java
new file mode 100644
index 0000000..7c2a0ad
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/remote/GTaskManager.java
@@ -0,0 +1,878 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: GTaskManager.java
+ * 描述: Google Tasks同步管理器，负责协调本地便签与Google Tasks之间的数据同步
+ * 作用: 管理同步过程中的数据映射、冲突解决和同步状态，是应用与Google Tasks服务交互的核心组件
+ */
+package net.micode.notes.gtask.remote;
+
+import android.app.Activity;
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.data.MetaData;
+import net.micode.notes.gtask.data.Node;
+import net.micode.notes.gtask.data.SqlNote;
+import net.micode.notes.gtask.data.Task;
+import net.micode.notes.gtask.data.TaskList;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.gtask.exception.NetworkFailureException;
+import net.micode.notes.tool.DataUtils;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * Google Tasks同步管理器类
+ *
+ * 该类负责管理本地便签与Google Tasks之间的数据同步，包括登录认证、数据获取、
+ * 内容同步、冲突解决等功能。采用单例模式确保全局只有一个同步管理器实例。
+ *
+ * 同步过程包括以下主要步骤：
+ * 1. 登录Google账户并获取授权
+ * 2. 获取远程任务列表
+ * 3. 同步本地和远程数据
+ * 4. 处理冲突和更新
+ */
+public class GTaskManager {
+ /** 日志标签 */
+ private static final String TAG = GTaskManager.class.getSimpleName();
+
+ /** 同步状态：成功 */
+ public static final int STATE_SUCCESS = 0;
+
+ /** 同步状态：网络错误 */
+ public static final int STATE_NETWORK_ERROR = 1;
+
+ /** 同步状态：内部错误 */
+ public static final int STATE_INTERNAL_ERROR = 2;
+
+ /** 同步状态：同步进行中 */
+ public static final int STATE_SYNC_IN_PROGRESS = 3;
+
+ /** 同步状态：同步已取消 */
+ public static final int STATE_SYNC_CANCELLED = 4;
+
+ /** 单例实例 */
+ private static GTaskManager mInstance = null;
+
+ /** 活动上下文，用于获取授权令牌 */
+ private Activity mActivity;
+
+ /** 应用上下文 */
+ private Context mContext;
+
+ /** 内容解析器，用于访问数据库 */
+ private ContentResolver mContentResolver;
+
+ /** 同步状态标志 */
+ private boolean mSyncing;
+
+ /** 取消同步标志 */
+ private boolean mCancelled;
+
+ /** Google任务列表映射表 <任务列表ID, TaskList对象> */
+ private HashMap mGTaskListHashMap;
+
+ /** Google任务节点映射表 <节点ID, Node对象> */
+ private HashMap mGTaskHashMap;
+
+ /** 元数据映射表 <关联ID, 元数据对象> */
+ private HashMap mMetaHashMap;
+
+ /** 元数据任务列表 */
+ private TaskList mMetaList;
+
+ /** 本地已删除ID集合 */
+ private HashSet mLocalDeleteIdMap;
+
+ /** Google ID到本地笔记ID的映射 */
+ private HashMap mGidToNid;
+
+ /** 本地笔记ID到Google ID的映射 */
+ private HashMap mNidToGid;
+
+ /**
+ * 私有构造函数，初始化同步管理器
+ * 遵循单例模式，只能通过getInstance方法获取实例
+ */
+ private GTaskManager() {
+ mSyncing = false;
+ mCancelled = false;
+ mGTaskListHashMap = new HashMap();
+ mGTaskHashMap = new HashMap();
+ mMetaHashMap = new HashMap();
+ mMetaList = null;
+ mLocalDeleteIdMap = new HashSet();
+ mGidToNid = new HashMap();
+ mNidToGid = new HashMap();
+ }
+
+ /**
+ * 获取GTaskManager的单例实例
+ *
+ * @return GTaskManager的单例实例
+ */
+ public static synchronized GTaskManager getInstance() {
+ if (mInstance == null) {
+ mInstance = new GTaskManager();
+ }
+ return mInstance;
+ }
+
+ /**
+ * 设置活动上下文
+ * 用于获取Google账户授权令牌
+ *
+ * @param activity 活动上下文
+ */
+ public synchronized void setActivityContext(Activity activity) {
+ // used for getting authtoken
+ mActivity = activity;
+ }
+
+ /**
+ * 执行同步操作
+ *
+ * @param context 应用上下文
+ * @param asyncTask 异步任务对象，用于发布进度更新
+ * @return 同步状态码
+ */
+ public int sync(Context context, GTaskASyncTask asyncTask) {
+ // 检查是否已有同步进行中
+ if (mSyncing) {
+ Log.d(TAG, "Sync is in progress");
+ return STATE_SYNC_IN_PROGRESS;
+ }
+
+ // 初始化同步环境
+ mContext = context;
+ mContentResolver = mContext.getContentResolver();
+ mSyncing = true;
+ mCancelled = false;
+ mGTaskListHashMap.clear();
+ mGTaskHashMap.clear();
+ mMetaHashMap.clear();
+ mLocalDeleteIdMap.clear();
+ mGidToNid.clear();
+ mNidToGid.clear();
+
+ try {
+ // 获取GTaskClient实例并重置更新数组
+ GTaskClient client = GTaskClient.getInstance();
+ client.resetUpdateArray();
+
+ // 登录Google Tasks服务
+ if (!mCancelled) {
+ if (!client.login(mActivity)) {
+ throw new NetworkFailureException("login google task failed");
+ }
+ }
+
+ // 获取远程任务列表
+ asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
+ initGTaskList();
+
+ // 执行内容同步
+ asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
+ syncContent();
+ } catch (NetworkFailureException e) {
+ // 处理网络错误
+ Log.e(TAG, e.toString());
+ return STATE_NETWORK_ERROR;
+ } catch (ActionFailureException e) {
+ // 处理内部错误
+ Log.e(TAG, e.toString());
+ return STATE_INTERNAL_ERROR;
+ } catch (Exception e) {
+ // 处理其他异常
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ return STATE_INTERNAL_ERROR;
+ } finally {
+ // 清理资源
+ mGTaskListHashMap.clear();
+ mGTaskHashMap.clear();
+ mMetaHashMap.clear();
+ mLocalDeleteIdMap.clear();
+ mGidToNid.clear();
+ mNidToGid.clear();
+ mSyncing = false;
+ }
+
+ // 返回同步结果
+ return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;
+ }
+
+ /**
+ * 初始化Google任务列表
+ * 从远程服务器获取任务列表和任务数据，并构建本地数据结构
+ *
+ * @throws NetworkFailureException 网络连接失败时抛出
+ */
+ private void initGTaskList() throws NetworkFailureException {
+ // 检查是否已取消同步
+ if (mCancelled)
+ return;
+
+ GTaskClient client = GTaskClient.getInstance();
+ try {
+ // 获取所有任务列表
+ JSONArray jsTaskLists = client.getTaskLists();
+
+ // 首先初始化元数据列表
+ mMetaList = null;
+ for (int i = 0; i < jsTaskLists.length(); i++) {
+ JSONObject object = jsTaskLists.getJSONObject(i);
+ String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
+ String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
+
+ // 查找元数据列表
+ if (name
+ .equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {
+ mMetaList = new TaskList();
+ mMetaList.setContentByRemoteJSON(object);
+
+ // 加载元数据
+ JSONArray jsMetas = client.getTaskList(gid);
+ for (int j = 0; j < jsMetas.length(); j++) {
+ object = (JSONObject) jsMetas.getJSONObject(j);
+ MetaData metaData = new MetaData();
+ metaData.setContentByRemoteJSON(object);
+ if (metaData.isWorthSaving()) {
+ mMetaList.addChildTask(metaData);
+ if (metaData.getGid() != null) {
+ mMetaHashMap.put(metaData.getRelatedGid(), metaData);
+ }
+ }
+ }
+ }
+ }
+
+ // 如果元数据列表不存在，则创建一个
+ if (mMetaList == null) {
+ mMetaList = new TaskList();
+ mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ + GTaskStringUtils.FOLDER_META);
+ GTaskClient.getInstance().createTaskList(mMetaList);
+ }
+
+ // 初始化任务列表
+ for (int i = 0; i < jsTaskLists.length(); i++) {
+ JSONObject object = jsTaskLists.getJSONObject(i);
+ String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
+ String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
+
+ // 处理MIUI文件夹前缀的任务列表（排除元数据列表）
+ if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
+ && !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ + GTaskStringUtils.FOLDER_META)) {
+ TaskList tasklist = new TaskList();
+ tasklist.setContentByRemoteJSON(object);
+ mGTaskListHashMap.put(gid, tasklist);
+ mGTaskHashMap.put(gid, tasklist);
+
+ // 加载任务
+ JSONArray jsTasks = client.getTaskList(gid);
+ for (int j = 0; j < jsTasks.length(); j++) {
+ object = (JSONObject) jsTasks.getJSONObject(j);
+ gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
+ Task task = new Task();
+ task.setContentByRemoteJSON(object);
+ if (task.isWorthSaving()) {
+ task.setMetaInfo(mMetaHashMap.get(gid));
+ tasklist.addChildTask(task);
+ mGTaskHashMap.put(gid, task);
+ }
+ }
+ }
+ }
+ } catch (JSONException e) {
+ // 处理JSON解析异常
+ Log.e(TAG, e.toString());
+ e.printStackTrace();
+ throw new ActionFailureException("initGTaskList: handing JSONObject failed");
+ }
+ }
+
+ private void syncContent() throws NetworkFailureException {
+ int syncType;
+ Cursor c = null;
+ String gid;
+ Node node;
+
+ mLocalDeleteIdMap.clear();
+
+ if (mCancelled) {
+ return;
+ }
+
+ // for local deleted note
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
+ "(type<>? AND parent_id=?)", new String[] {
+ String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
+ }, null);
+ if (c != null) {
+ while (c.moveToNext()) {
+ gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ doContentSync(Node.SYNC_ACTION_DEL_REMOTE, node, c);
+ }
+
+ mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
+ }
+ } else {
+ Log.w(TAG, "failed to query trash folder");
+ }
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+
+ // sync folder first
+ syncFolder();
+
+ // for note existing in database
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
+ "(type=? AND parent_id<>?)", new String[] {
+ String.valueOf(Notes.TYPE_NOTE), String.valueOf(Notes.ID_TRASH_FOLER)
+ }, NoteColumns.TYPE + " DESC");
+ if (c != null) {
+ while (c.moveToNext()) {
+ gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));
+ mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);
+ syncType = node.getSyncAction(c);
+ } else {
+ if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
+ // local add
+ syncType = Node.SYNC_ACTION_ADD_REMOTE;
+ } else {
+ // remote delete
+ syncType = Node.SYNC_ACTION_DEL_LOCAL;
+ }
+ }
+ doContentSync(syncType, node, c);
+ }
+ } else {
+ Log.w(TAG, "failed to query existing note in database");
+ }
+
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+
+ // go through remaining items
+ Iterator> iter = mGTaskHashMap.entrySet().iterator();
+ while (iter.hasNext()) {
+ Map.Entry entry = iter.next();
+ node = entry.getValue();
+ doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
+ }
+
+ // mCancelled can be set by another thread, so we neet to check one by
+ // one
+ // clear local delete table
+ if (!mCancelled) {
+ if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) {
+ throw new ActionFailureException("failed to batch-delete local deleted notes");
+ }
+ }
+
+ // refresh local sync id
+ if (!mCancelled) {
+ GTaskClient.getInstance().commitUpdate();
+ refreshLocalSyncId();
+ }
+
+ }
+
+ private void syncFolder() throws NetworkFailureException {
+ Cursor c = null;
+ String gid;
+ Node node;
+ int syncType;
+
+ if (mCancelled) {
+ return;
+ }
+
+ // for root folder
+ try {
+ c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
+ Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null);
+ if (c != null) {
+ c.moveToNext();
+ gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER);
+ mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid);
+ // for system folder, only update remote name if necessary
+ if (!node.getName().equals(
+ GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT))
+ doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
+ } else {
+ doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
+ }
+ } else {
+ Log.w(TAG, "failed to query root folder");
+ }
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+
+ // for call-note folder
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)",
+ new String[] {
+ String.valueOf(Notes.ID_CALL_RECORD_FOLDER)
+ }, null);
+ if (c != null) {
+ if (c.moveToNext()) {
+ gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER);
+ mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid);
+ // for system folder, only update remote name if
+ // necessary
+ if (!node.getName().equals(
+ GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ + GTaskStringUtils.FOLDER_CALL_NOTE))
+ doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
+ } else {
+ doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
+ }
+ }
+ } else {
+ Log.w(TAG, "failed to query call note folder");
+ }
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+
+ // for local existing folders
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
+ "(type=? AND parent_id<>?)", new String[] {
+ String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)
+ }, NoteColumns.TYPE + " DESC");
+ if (c != null) {
+ while (c.moveToNext()) {
+ gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));
+ mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);
+ syncType = node.getSyncAction(c);
+ } else {
+ if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
+ // local add
+ syncType = Node.SYNC_ACTION_ADD_REMOTE;
+ } else {
+ // remote delete
+ syncType = Node.SYNC_ACTION_DEL_LOCAL;
+ }
+ }
+ doContentSync(syncType, node, c);
+ }
+ } else {
+ Log.w(TAG, "failed to query existing folder");
+ }
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+
+ // for remote add folders
+ Iterator> iter = mGTaskListHashMap.entrySet().iterator();
+ while (iter.hasNext()) {
+ Map.Entry entry = iter.next();
+ gid = entry.getKey();
+ node = entry.getValue();
+ if (mGTaskHashMap.containsKey(gid)) {
+ mGTaskHashMap.remove(gid);
+ doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
+ }
+ }
+
+ if (!mCancelled)
+ GTaskClient.getInstance().commitUpdate();
+ }
+
+ private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ MetaData meta;
+ switch (syncType) {
+ case Node.SYNC_ACTION_ADD_LOCAL:
+ addLocalNode(node);
+ break;
+ case Node.SYNC_ACTION_ADD_REMOTE:
+ addRemoteNode(node, c);
+ break;
+ case Node.SYNC_ACTION_DEL_LOCAL:
+ meta = mMetaHashMap.get(c.getString(SqlNote.GTASK_ID_COLUMN));
+ if (meta != null) {
+ GTaskClient.getInstance().deleteNode(meta);
+ }
+ mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
+ break;
+ case Node.SYNC_ACTION_DEL_REMOTE:
+ meta = mMetaHashMap.get(node.getGid());
+ if (meta != null) {
+ GTaskClient.getInstance().deleteNode(meta);
+ }
+ GTaskClient.getInstance().deleteNode(node);
+ break;
+ case Node.SYNC_ACTION_UPDATE_LOCAL:
+ updateLocalNode(node, c);
+ break;
+ case Node.SYNC_ACTION_UPDATE_REMOTE:
+ updateRemoteNode(node, c);
+ break;
+ case Node.SYNC_ACTION_UPDATE_CONFLICT:
+ // merging both modifications maybe a good idea
+ // right now just use local update simply
+ updateRemoteNode(node, c);
+ break;
+ case Node.SYNC_ACTION_NONE:
+ break;
+ case Node.SYNC_ACTION_ERROR:
+ default:
+ throw new ActionFailureException("unkown sync action type");
+ }
+ }
+
+ private void addLocalNode(Node node) throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ SqlNote sqlNote;
+ if (node instanceof TaskList) {
+ if (node.getName().equals(
+ GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) {
+ sqlNote = new SqlNote(mContext, Notes.ID_ROOT_FOLDER);
+ } else if (node.getName().equals(
+ GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_CALL_NOTE)) {
+ sqlNote = new SqlNote(mContext, Notes.ID_CALL_RECORD_FOLDER);
+ } else {
+ sqlNote = new SqlNote(mContext);
+ sqlNote.setContent(node.getLocalJSONFromContent());
+ sqlNote.setParentId(Notes.ID_ROOT_FOLDER);
+ }
+ } else {
+ sqlNote = new SqlNote(mContext);
+ JSONObject js = node.getLocalJSONFromContent();
+ try {
+ if (js.has(GTaskStringUtils.META_HEAD_NOTE)) {
+ JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+ if (note.has(NoteColumns.ID)) {
+ long id = note.getLong(NoteColumns.ID);
+ if (DataUtils.existInNoteDatabase(mContentResolver, id)) {
+ // the id is not available, have to create a new one
+ note.remove(NoteColumns.ID);
+ }
+ }
+ }
+
+ if (js.has(GTaskStringUtils.META_HEAD_DATA)) {
+ JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+ for (int i = 0; i < dataArray.length(); i++) {
+ JSONObject data = dataArray.getJSONObject(i);
+ if (data.has(DataColumns.ID)) {
+ long dataId = data.getLong(DataColumns.ID);
+ if (DataUtils.existInDataDatabase(mContentResolver, dataId)) {
+ // the data id is not available, have to create
+ // a new one
+ data.remove(DataColumns.ID);
+ }
+ }
+ }
+
+ }
+ } catch (JSONException e) {
+ Log.w(TAG, e.toString());
+ e.printStackTrace();
+ }
+ sqlNote.setContent(js);
+
+ Long parentId = mGidToNid.get(((Task) node).getParent().getGid());
+ if (parentId == null) {
+ Log.e(TAG, "cannot find task's parent id locally");
+ throw new ActionFailureException("cannot add local node");
+ }
+ sqlNote.setParentId(parentId.longValue());
+ }
+
+ // create the local node
+ sqlNote.setGtaskId(node.getGid());
+ sqlNote.commit(false);
+
+ // update gid-nid mapping
+ mGidToNid.put(node.getGid(), sqlNote.getId());
+ mNidToGid.put(sqlNote.getId(), node.getGid());
+
+ // update meta
+ updateRemoteMeta(node.getGid(), sqlNote);
+ }
+
+ private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ SqlNote sqlNote;
+ // update the note locally
+ sqlNote = new SqlNote(mContext, c);
+ sqlNote.setContent(node.getLocalJSONFromContent());
+
+ Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid())
+ : new Long(Notes.ID_ROOT_FOLDER);
+ if (parentId == null) {
+ Log.e(TAG, "cannot find task's parent id locally");
+ throw new ActionFailureException("cannot update local node");
+ }
+ sqlNote.setParentId(parentId.longValue());
+ sqlNote.commit(true);
+
+ // update meta info
+ updateRemoteMeta(node.getGid(), sqlNote);
+ }
+
+ private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ SqlNote sqlNote = new SqlNote(mContext, c);
+ Node n;
+
+ // update remotely
+ if (sqlNote.isNoteType()) {
+ Task task = new Task();
+ task.setContentByLocalJSON(sqlNote.getContent());
+
+ String parentGid = mNidToGid.get(sqlNote.getParentId());
+ if (parentGid == null) {
+ Log.e(TAG, "cannot find task's parent tasklist");
+ throw new ActionFailureException("cannot add remote task");
+ }
+ mGTaskListHashMap.get(parentGid).addChildTask(task);
+
+ GTaskClient.getInstance().createTask(task);
+ n = (Node) task;
+
+ // add meta
+ updateRemoteMeta(task.getGid(), sqlNote);
+ } else {
+ TaskList tasklist = null;
+
+ // we need to skip folder if it has already existed
+ String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX;
+ if (sqlNote.getId() == Notes.ID_ROOT_FOLDER)
+ folderName += GTaskStringUtils.FOLDER_DEFAULT;
+ else if (sqlNote.getId() == Notes.ID_CALL_RECORD_FOLDER)
+ folderName += GTaskStringUtils.FOLDER_CALL_NOTE;
+ else
+ folderName += sqlNote.getSnippet();
+
+ Iterator> iter = mGTaskListHashMap.entrySet().iterator();
+ while (iter.hasNext()) {
+ Map.Entry entry = iter.next();
+ String gid = entry.getKey();
+ TaskList list = entry.getValue();
+
+ if (list.getName().equals(folderName)) {
+ tasklist = list;
+ if (mGTaskHashMap.containsKey(gid)) {
+ mGTaskHashMap.remove(gid);
+ }
+ break;
+ }
+ }
+
+ // no match we can add now
+ if (tasklist == null) {
+ tasklist = new TaskList();
+ tasklist.setContentByLocalJSON(sqlNote.getContent());
+ GTaskClient.getInstance().createTaskList(tasklist);
+ mGTaskListHashMap.put(tasklist.getGid(), tasklist);
+ }
+ n = (Node) tasklist;
+ }
+
+ // update local note
+ sqlNote.setGtaskId(n.getGid());
+ sqlNote.commit(false);
+ sqlNote.resetLocalModified();
+ sqlNote.commit(true);
+
+ // gid-id mapping
+ mGidToNid.put(n.getGid(), sqlNote.getId());
+ mNidToGid.put(sqlNote.getId(), n.getGid());
+ }
+
+ private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ SqlNote sqlNote = new SqlNote(mContext, c);
+
+ // update remotely
+ node.setContentByLocalJSON(sqlNote.getContent());
+ GTaskClient.getInstance().addUpdateNode(node);
+
+ // update meta
+ updateRemoteMeta(node.getGid(), sqlNote);
+
+ // move task if necessary
+ if (sqlNote.isNoteType()) {
+ Task task = (Task) node;
+ TaskList preParentList = task.getParent();
+
+ String curParentGid = mNidToGid.get(sqlNote.getParentId());
+ if (curParentGid == null) {
+ Log.e(TAG, "cannot find task's parent tasklist");
+ throw new ActionFailureException("cannot update remote task");
+ }
+ TaskList curParentList = mGTaskListHashMap.get(curParentGid);
+
+ if (preParentList != curParentList) {
+ preParentList.removeChildTask(task);
+ curParentList.addChildTask(task);
+ GTaskClient.getInstance().moveTask(task, preParentList, curParentList);
+ }
+ }
+
+ // clear local modified flag
+ sqlNote.resetLocalModified();
+ sqlNote.commit(true);
+ }
+
+ private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {
+ if (sqlNote != null && sqlNote.isNoteType()) {
+ MetaData metaData = mMetaHashMap.get(gid);
+ if (metaData != null) {
+ metaData.setMeta(gid, sqlNote.getContent());
+ GTaskClient.getInstance().addUpdateNode(metaData);
+ } else {
+ metaData = new MetaData();
+ metaData.setMeta(gid, sqlNote.getContent());
+ mMetaList.addChildTask(metaData);
+ mMetaHashMap.put(gid, metaData);
+ GTaskClient.getInstance().createTask(metaData);
+ }
+ }
+ }
+
+ private void refreshLocalSyncId() throws NetworkFailureException {
+ if (mCancelled) {
+ return;
+ }
+
+ // get the latest gtask list
+ mGTaskHashMap.clear();
+ mGTaskListHashMap.clear();
+ mMetaHashMap.clear();
+ initGTaskList();
+
+ Cursor c = null;
+ try {
+ c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
+ "(type<>? AND parent_id<>?)", new String[] {
+ String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
+ }, NoteColumns.TYPE + " DESC");
+ if (c != null) {
+ while (c.moveToNext()) {
+ String gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+ Node node = mGTaskHashMap.get(gid);
+ if (node != null) {
+ mGTaskHashMap.remove(gid);
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.SYNC_ID, node.getLastModified());
+ mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
+ c.getLong(SqlNote.ID_COLUMN)), values, null, null);
+ } else {
+ Log.e(TAG, "something is missed");
+ throw new ActionFailureException(
+ "some local items don't have gid after sync");
+ }
+ }
+ } else {
+ Log.w(TAG, "failed to query local note to refresh sync id");
+ }
+ } finally {
+ if (c != null) {
+ c.close();
+ c = null;
+ }
+ }
+ }
+
+ public String getSyncAccount() {
+ return GTaskClient.getInstance().getSyncAccount().name;
+ }
+
+ public void cancelSync() {
+ mCancelled = true;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/gtask/remote/GTaskSyncService.java b/app/src/main/java/net/micode/notes/gtask/remote/GTaskSyncService.java
new file mode 100644
index 0000000..de2b51d
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/gtask/remote/GTaskSyncService.java
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: GTaskSyncService.java
+ * 描述: Google Tasks同步服务，负责处理便签与Google Tasks的同步操作
+ * 作用: 提供便签与Google Tasks的同步功能，包括开始同步、取消同步等操作
+ * 注意: 当前版本中，同步功能已临时禁用
+ */
+package net.micode.notes.gtask.remote;
+
+import android.app.Activity;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.IBinder;
+
+/**
+ * Google Tasks同步服务类
+ *
+ * 该服务负责处理便签与Google Tasks的同步操作
+ * 提供开始同步、取消同步等功能，并通过广播通知同步状态
+ * 注意：当前版本中，同步功能已临时禁用
+ */
+public class GTaskSyncService extends Service {
+ /** Intent参数：同步动作类型 */
+ public final static String ACTION_STRING_NAME = "sync_action_type";
+
+ /** 同步动作：开始同步 */
+ public final static int ACTION_START_SYNC = 0;
+
+ /** 同步动作：取消同步 */
+ public final static int ACTION_CANCEL_SYNC = 1;
+
+ /** 同步动作：无效动作 */
+ public final static int ACTION_INVALID = 2;
+
+ /** 广播Action名称，用于通知同步状态 */
+ public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service";
+
+ /** 广播参数：是否正在同步 */
+ public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing";
+
+ /** 广播参数：同步进度消息 */
+ public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg";
+
+ // /** 同步任务对象 */
+ // private static GTaskASyncTask mSyncTask = null;
+
+ /** 同步进度消息 */
+ private static String mSyncProgress = "";
+
+ /**
+ * 开始同步操作
+ *
+ * 注意：当前版本中，此功能已临时禁用
+ */
+ private void startSync() {
+ // Temporarily disabled sync functionality
+ sendBroadcast("Sync functionality temporarily disabled");
+ stopSelf();
+ }
+
+ /**
+ * 取消同步操作
+ *
+ * 注意：当前版本中，此功能已临时禁用
+ */
+ private void cancelSync() {
+ // Temporarily disabled sync functionality
+ sendBroadcast("Sync cancelled");
+ }
+
+ /**
+ * 服务创建时的回调方法
+ *
+ * 注意：当前版本中，同步功能已临时禁用，此方法为空实现
+ */
+ @Override
+ public void onCreate() {
+ // Temporarily disabled sync functionality
+ }
+
+ /**
+ * 服务启动时的回调方法
+ *
+ * 根据Intent中的参数执行相应的同步操作
+ *
+ * @param intent 启动服务的Intent
+ * @param flags 服务启动标志
+ * @param startId 服务启动ID
+ * @return 服务启动模式
+ */
+ @Override
+ public int onStartCommand(Intent intent, int flags, int startId) {
+ // 从Intent中获取同步动作类型
+ Bundle bundle = intent.getExtras();
+ if (bundle != null && bundle.containsKey(ACTION_STRING_NAME)) {
+ switch (bundle.getInt(ACTION_STRING_NAME, ACTION_INVALID)) {
+ case ACTION_START_SYNC:
+ startSync();
+ break;
+ case ACTION_CANCEL_SYNC:
+ cancelSync();
+ break;
+ default:
+ break;
+ }
+ return START_STICKY;
+ }
+ return super.onStartCommand(intent, flags, startId);
+ }
+
+ /**
+ * 内存不足时的回调方法
+ *
+ * 注意：当前版本中，同步功能已临时禁用，此方法为空实现
+ */
+ @Override
+ public void onLowMemory() {
+ // Temporarily disabled sync functionality
+ }
+
+ /**
+ * 绑定服务时的回调方法
+ *
+ * @param intent 绑定服务的Intent
+ * @return 返回null，不支持绑定
+ */
+ public IBinder onBind(Intent intent) {
+ return null;
+ }
+
+ /**
+ * 发送同步状态广播
+ *
+ * @param msg 同步进度消息
+ */
+ public void sendBroadcast(String msg) {
+ // 保存同步进度消息
+ mSyncProgress = msg;
+ // 创建广播Intent
+ Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME);
+ // 设置同步状态参数
+ intent.putExtra(GTASK_SERVICE_BROADCAST_IS_SYNCING, false);
+ intent.putExtra(GTASK_SERVICE_BROADCAST_PROGRESS_MSG, msg);
+ // 发送广播
+ sendBroadcast(intent);
+ }
+
+ /**
+ * 静态方法：启动同步服务
+ *
+ * @param activity 活动上下文
+ */
+ public static void startSync(Activity activity) {
+ // Temporarily disabled sync functionality
+ Intent intent = new Intent(activity, GTaskSyncService.class);
+ intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_START_SYNC);
+ activity.startService(intent);
+ }
+
+ /**
+ * 静态方法：取消同步操作
+ *
+ * @param context 上下文环境
+ */
+ public static void cancelSync(Context context) {
+ Intent intent = new Intent(context, GTaskSyncService.class);
+ intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC);
+ context.startService(intent);
+ }
+
+ /**
+ * 静态方法：检查是否正在同步
+ *
+ * @return 当前版本始终返回false，因为同步功能已临时禁用
+ */
+ public static boolean isSyncing() {
+ return false; // Temporarily disabled sync functionality
+ }
+
+ /**
+ * 静态方法：获取同步进度消息
+ *
+ * @return 同步进度消息
+ */
+ public static String getProgressString() {
+ return mSyncProgress;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/model/Note.java b/app/src/main/java/net/micode/notes/model/Note.java
new file mode 100644
index 0000000..be2918b
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/model/Note.java
@@ -0,0 +1,392 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: Note.java
+ * 描述: 便签数据模型类，用于管理便签的创建、更新和同步
+ * 作用: 提供便签数据的CRUD操作接口，是应用模型层的核心类之一
+ */
+package net.micode.notes.model;
+import android.content.ContentProviderOperation;
+import android.content.ContentProviderResult;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.OperationApplicationException;
+import android.net.Uri;
+import android.os.RemoteException;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.Notes.TextNote;
+
+import java.util.ArrayList;
+
+/**
+ * 便签模型类
+ *
+ * 负责便签数据的创建、更新和同步操作，包括便签基本信息和便签内容数据
+ * 支持文本便签和通话记录便签两种类型
+ */
+public class Note {
+ /** 便签差异值，用于记录便签属性的更改 */
+ private ContentValues mNoteDiffValues;
+
+ /** 便签数据，包括文本数据和通话记录数据 */
+ private NoteData mNoteData;
+
+ /** 日志标签 */
+ private static final String TAG = "Note";
+
+ /**
+ * 创建新便签并获取便签ID
+ *
+ * @param context 上下文环境
+ * @param folderId 文件夹ID，指定便签所属的文件夹
+ * @return 新创建的便签ID
+ */
+ public static synchronized long getNewNoteId(Context context, long folderId) {
+ // 创建便签基本信息
+ ContentValues values = new ContentValues();
+ long createdTime = System.currentTimeMillis();
+ values.put(NoteColumns.CREATED_DATE, createdTime);
+ values.put(NoteColumns.MODIFIED_DATE, createdTime);
+ values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
+ values.put(NoteColumns.LOCAL_MODIFIED, 1);
+ values.put(NoteColumns.PARENT_ID, folderId);
+
+ // 插入便签记录并获取URI
+ Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
+
+ // 从URI中提取便签ID
+ long noteId = 0;
+ try {
+ noteId = Long.valueOf(uri.getPathSegments().get(1));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Get note id error :" + e.toString());
+ noteId = 0;
+ }
+
+ // 验证便签ID有效性
+ if (noteId == -1) {
+ throw new IllegalStateException("Wrong note id:" + noteId);
+ }
+ return noteId;
+ }
+
+ /**
+ * 构造函数，初始化便签对象
+ */
+ public Note() {
+ mNoteDiffValues = new ContentValues();
+ mNoteData = new NoteData();
+ }
+
+ /**
+ * 设置便签属性值
+ *
+ * @param key 属性名
+ * @param value 属性值
+ */
+ public void setNoteValue(String key, String value) {
+ mNoteDiffValues.put(key, value);
+ // 标记为本地已修改
+ mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
+ // 更新修改时间
+ mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
+ }
+
+ /**
+ * 设置便签文本数据
+ *
+ * @param key 数据键
+ * @param value 数据值
+ */
+ public void setTextData(String key, String value) {
+ mNoteData.setTextData(key, value);
+ }
+
+ /**
+ * 设置文本数据ID
+ *
+ * @param id 文本数据ID
+ */
+ public void setTextDataId(long id) {
+ mNoteData.setTextDataId(id);
+ }
+
+ /**
+ * 获取文本数据ID
+ *
+ * @return 文本数据ID
+ */
+ public long getTextDataId() {
+ return mNoteData.mTextDataId;
+ }
+
+ /**
+ * 设置通话记录数据ID
+ *
+ * @param id 通话记录数据ID
+ */
+ public void setCallDataId(long id) {
+ mNoteData.setCallDataId(id);
+ }
+
+ /**
+ * 设置通话记录数据
+ *
+ * @param key 数据键
+ * @param value 数据值
+ */
+ public void setCallData(String key, String value) {
+ mNoteData.setCallData(key, value);
+ }
+
+ /**
+ * 检查便签是否在本地被修改
+ *
+ * @return 如果便签被修改返回true，否则返回false
+ */
+ public boolean isLocalModified() {
+ return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
+ }
+
+ /**
+ * 同步便签数据到数据库
+ *
+ * @param context 上下文环境
+ * @param noteId 便签ID
+ * @return 同步成功返回true，失败返回false
+ */
+ public boolean syncNote(Context context, long noteId) {
+ // 验证便签ID有效性
+ if (noteId <= 0) {
+ throw new IllegalArgumentException("Wrong note id:" + noteId);
+ }
+
+ // 如果没有本地修改，直接返回成功
+ if (!isLocalModified()) {
+ return true;
+ }
+
+ /**
+ * In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
+ * {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
+ * note data info
+ */
+ // 更新便签基本信息
+ if (context.getContentResolver().update(
+ ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
+ null) == 0) {
+ Log.e(TAG, "Update note error, should not happen");
+ // Do not return, fall through
+ }
+ mNoteDiffValues.clear();
+
+ // 更新便签内容数据
+ if (mNoteData.isLocalModified()
+ && (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * 便签数据内部类
+ *
+ * 管理便签的文本数据和通话记录数据
+ */
+ private class NoteData {
+ /** 文本数据ID */
+ private long mTextDataId;
+
+ /** 文本数据值 */
+ private ContentValues mTextDataValues;
+
+ /** 通话记录数据ID */
+ private long mCallDataId;
+
+ /** 通话记录数据值 */
+ private ContentValues mCallDataValues;
+
+ /** 日志标签 */
+ private static final String TAG = "NoteData";
+
+ /**
+ * 构造函数，初始化便签数据
+ */
+ public NoteData() {
+ mTextDataValues = new ContentValues();
+ mCallDataValues = new ContentValues();
+ mTextDataId = 0;
+ mCallDataId = 0;
+ }
+
+ /**
+ * 检查数据是否在本地被修改
+ *
+ * @return 如果数据被修改返回true，否则返回false
+ */
+ boolean isLocalModified() {
+ return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
+ }
+
+ /**
+ * 设置文本数据ID
+ *
+ * @param id 文本数据ID
+ */
+ void setTextDataId(long id) {
+ if(id <= 0) {
+ throw new IllegalArgumentException("Text data id should larger than 0");
+ }
+ mTextDataId = id;
+ }
+
+ /**
+ * 设置通话记录数据ID
+ *
+ * @param id 通话记录数据ID
+ */
+ void setCallDataId(long id) {
+ if (id <= 0) {
+ throw new IllegalArgumentException("Call data id should larger than 0");
+ }
+ mCallDataId = id;
+ }
+
+ /**
+ * 设置通话记录数据
+ *
+ * @param key 数据键
+ * @param value 数据值
+ */
+ void setCallData(String key, String value) {
+ mCallDataValues.put(key, value);
+ // 标记便签为本地已修改
+ mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
+ // 更新修改时间
+ mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
+ }
+
+ /**
+ * 设置文本数据
+ *
+ * @param key 数据键
+ * @param value 数据值
+ */
+ void setTextData(String key, String value) {
+ mTextDataValues.put(key, value);
+ // 标记便签为本地已修改
+ mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
+ // 更新修改时间
+ mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
+ }
+
+ /**
+ * 将便签数据推送到ContentResolver
+ *
+ * @param context 上下文环境
+ * @param noteId 便签ID
+ * @return 成功返回便签URI，失败返回null
+ */
+ Uri pushIntoContentResolver(Context context, long noteId) {
+ /**
+ * Check for safety
+ */
+ // 验证便签ID有效性
+ if (noteId <= 0) {
+ throw new IllegalArgumentException("Wrong note id:" + noteId);
+ }
+
+ // 创建批量操作列表
+ ArrayList operationList = new ArrayList();
+ ContentProviderOperation.Builder builder = null;
+
+ // 处理文本数据
+ if(mTextDataValues.size() > 0) {
+ mTextDataValues.put(DataColumns.NOTE_ID, noteId);
+ if (mTextDataId == 0) {
+ // 新建文本数据
+ mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
+ Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
+ mTextDataValues);
+ try {
+ setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Insert new text data fail with noteId" + noteId);
+ mTextDataValues.clear();
+ return null;
+ }
+ } else {
+ // 更新现有文本数据
+ builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
+ Notes.CONTENT_DATA_URI, mTextDataId));
+ builder.withValues(mTextDataValues);
+ operationList.add(builder.build());
+ }
+ mTextDataValues.clear();
+ }
+
+ // 处理通话记录数据
+ if(mCallDataValues.size() > 0) {
+ mCallDataValues.put(DataColumns.NOTE_ID, noteId);
+ if (mCallDataId == 0) {
+ // 新建通话记录数据
+ mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
+ Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
+ mCallDataValues);
+ try {
+ setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
+ } catch (NumberFormatException e) {
+ Log.e(TAG, "Insert new call data fail with noteId" + noteId);
+ mCallDataValues.clear();
+ return null;
+ }
+ } else {
+ // 更新现有通话记录数据
+ builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
+ Notes.CONTENT_DATA_URI, mCallDataId));
+ builder.withValues(mCallDataValues);
+ operationList.add(builder.build());
+ }
+ mCallDataValues.clear();
+ }
+
+ // 执行批量操作
+ if (operationList.size() > 0) {
+ try {
+ ContentProviderResult[] results = context.getContentResolver().applyBatch(
+ Notes.AUTHORITY, operationList);
+ return (results == null || results.length == 0 || results[0] == null) ? null
+ : ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
+ } catch (RemoteException e) {
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ return null;
+ } catch (OperationApplicationException e) {
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ return null;
+ }
+ }
+ return null;
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/model/WorkingNote.java b/app/src/main/java/net/micode/notes/model/WorkingNote.java
new file mode 100644
index 0000000..4dd4987
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/model/WorkingNote.java
@@ -0,0 +1,586 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: WorkingNote.java
+ * 描述: 便签工作模型类，用于在UI层和数据层之间进行交互
+ * 作用: 提供便签编辑、保存、加载等操作的高级接口，管理便签的各种属性和状态
+ */
+package net.micode.notes.model;
+
+import android.appwidget.AppWidgetManager;
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.Notes.TextNote;
+import net.micode.notes.tool.ResourceParser.NoteBgResources;
+
+/**
+ * 便签工作模型类
+ *
+ * 该类是应用的核心模型类，负责便签数据的加载、编辑和保存操作
+ * 提供了便签的所有属性访问和修改方法，如内容、背景颜色、提醒时间等
+ * 作为UI层和数据层之间的桥梁，处理便签的各种状态变化
+ */
+public class WorkingNote {
+ /** 底层便签数据模型 */
+ private Note mNote;
+
+ /** 便签ID */
+ private long mNoteId;
+
+ /** 便签内容 */
+ private String mContent;
+
+ /** 便签模式（普通模式或清单模式） */
+ private int mMode;
+
+ /** 提醒时间 */
+ private long mAlertDate;
+
+ /** 修改时间 */
+ private long mModifiedDate;
+
+ /** 背景颜色ID */
+ private int mBgColorId;
+
+ /** 小部件ID */
+ private int mWidgetId;
+
+ /** 小部件类型 */
+ private int mWidgetType;
+
+ /** 所属文件夹ID */
+ private long mFolderId;
+
+ /** 上下文环境 */
+ private Context mContext;
+
+ /** 日志标签 */
+ private static final String TAG = "WorkingNote";
+
+ /** 是否已删除标记 */
+ private boolean mIsDeleted;
+
+ /** 便签设置变更监听器 */
+ private NoteSettingChangedListener mNoteSettingStatusListener;
+
+ /**
+ * 便签数据查询投影：定义查询便签数据时需要获取的列
+ */
+ public static final String[] DATA_PROJECTION = new String[] {
+ DataColumns.ID,
+ DataColumns.CONTENT,
+ DataColumns.MIME_TYPE,
+ DataColumns.DATA1,
+ DataColumns.DATA2,
+ DataColumns.DATA3,
+ DataColumns.DATA4,
+ };
+
+ /**
+ * 便签查询投影：定义查询便签时需要获取的列
+ */
+ public static final String[] NOTE_PROJECTION = new String[] {
+ NoteColumns.PARENT_ID,
+ NoteColumns.ALERTED_DATE,
+ NoteColumns.BG_COLOR_ID,
+ NoteColumns.WIDGET_ID,
+ NoteColumns.WIDGET_TYPE,
+ NoteColumns.MODIFIED_DATE
+ };
+
+ /** 数据ID列索引 */
+ private static final int DATA_ID_COLUMN = 0;
+
+ /** 数据内容列索引 */
+ private static final int DATA_CONTENT_COLUMN = 1;
+
+ /** 数据MIME类型列索引 */
+ private static final int DATA_MIME_TYPE_COLUMN = 2;
+
+ /** 数据模式列索引 */
+ private static final int DATA_MODE_COLUMN = 3;
+
+ /** 便签父ID列索引 */
+ private static final int NOTE_PARENT_ID_COLUMN = 0;
+
+ /** 便签提醒时间列索引 */
+ private static final int NOTE_ALERTED_DATE_COLUMN = 1;
+
+ /** 便签背景颜色ID列索引 */
+ private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
+
+ /** 便签小部件ID列索引 */
+ private static final int NOTE_WIDGET_ID_COLUMN = 3;
+
+ /** 便签小部件类型列索引 */
+ private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
+
+ /** 便签修改时间列索引 */
+ private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
+
+ /**
+ * 创建新便签的构造函数
+ *
+ * @param context 上下文环境
+ * @param folderId 所属文件夹ID
+ */
+ private WorkingNote(Context context, long folderId) {
+ mContext = context;
+ mAlertDate = 0;
+ mModifiedDate = System.currentTimeMillis();
+ mFolderId = folderId;
+ mNote = new Note();
+ mNoteId = 0;
+ mIsDeleted = false;
+ mMode = 0;
+ mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
+ }
+
+ /**
+ * 加载已有便签的构造函数
+ *
+ * @param context 上下文环境
+ * @param noteId 便签ID
+ * @param folderId 所属文件夹ID
+ */
+ private WorkingNote(Context context, long noteId, long folderId) {
+ mContext = context;
+ mNoteId = noteId;
+ mFolderId = folderId;
+ mIsDeleted = false;
+ mNote = new Note();
+ loadNote();
+ }
+
+ /**
+ * 从数据库加载便签基本信息
+ */
+ private void loadNote() {
+ // 查询便签基本信息
+ Cursor cursor = mContext.getContentResolver().query(
+ ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
+ null, null);
+
+ if (cursor != null) {
+ if (cursor.moveToFirst()) {
+ // 从查询结果中提取便签属性
+ mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
+ mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);
+ mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
+ mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
+ mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
+ mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
+ }
+ cursor.close();
+ } else {
+ Log.e(TAG, "No note with id:" + mNoteId);
+ throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
+ }
+ // 加载便签内容数据
+ loadNoteData();
+ }
+
+ /**
+ * 从数据库加载便签内容数据
+ */
+ private void loadNoteData() {
+ // 查询便签内容数据
+ Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
+ DataColumns.NOTE_ID + "=?", new String[] {
+ String.valueOf(mNoteId)
+ }, null);
+
+ if (cursor != null) {
+ if (cursor.moveToFirst()) {
+ do {
+ // 根据数据类型处理不同的便签内容
+ String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
+ if (DataConstants.NOTE.equals(type)) {
+ // 处理文本便签数据
+ mContent = cursor.getString(DATA_CONTENT_COLUMN);
+ mMode = cursor.getInt(DATA_MODE_COLUMN);
+ mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
+ } else if (DataConstants.CALL_NOTE.equals(type)) {
+ // 处理通话记录便签数据
+ mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
+ } else {
+ Log.d(TAG, "Wrong note type with type:" + type);
+ }
+ } while (cursor.moveToNext());
+ }
+ cursor.close();
+ } else {
+ Log.e(TAG, "No data with id:" + mNoteId);
+ throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
+ }
+ }
+
+ /**
+ * 创建空便签
+ *
+ * @param context 上下文环境
+ * @param folderId 所属文件夹ID
+ * @param widgetId 小部件ID
+ * @param widgetType 小部件类型
+ * @param defaultBgColorId 默认背景颜色ID
+ * @return 新创建的WorkingNote对象
+ */
+ public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
+ int widgetType, int defaultBgColorId) {
+ WorkingNote note = new WorkingNote(context, folderId);
+ note.setBgColorId(defaultBgColorId);
+ note.setWidgetId(widgetId);
+ note.setWidgetType(widgetType);
+ return note;
+ }
+
+ /**
+ * 加载已有便签
+ *
+ * @param context 上下文环境
+ * @param id 便签ID
+ * @return 加载的WorkingNote对象
+ */
+ public static WorkingNote load(Context context, long id) {
+ return new WorkingNote(context, id, 0);
+ }
+
+ /**
+ * 保存便签到数据库
+ *
+ * @return 保存成功返回true，失败返回false
+ */
+ public synchronized boolean saveNote() {
+ // 检查便签是否值得保存
+ if (isWorthSaving()) {
+ // 如果便签不存在于数据库中，创建新便签
+ if (!existInDatabase()) {
+ if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
+ Log.e(TAG, "Create new note fail with id:" + mNoteId);
+ return false;
+ }
+ }
+
+ // 同步便签数据到数据库
+ mNote.syncNote(mContext, mNoteId);
+
+ /**
+ * Update widget content if there exist any widget of this note
+ */
+ // 如果便签有关联的小部件，更新小部件内容
+ if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+ && mWidgetType != Notes.TYPE_WIDGET_INVALIDE
+ && mNoteSettingStatusListener != null) {
+ mNoteSettingStatusListener.onWidgetChanged();
+ }
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * 检查便签是否存在于数据库中
+ *
+ * @return 存在返回true，否则返回false
+ */
+ public boolean existInDatabase() {
+ return mNoteId > 0;
+ }
+
+ /**
+ * 检查便签是否值得保存
+ * 判断条件：
+ * 1. 便签未被删除
+ * 2. 如果是新便签，内容不为空
+ * 3. 如果是已有便签，有本地修改
+ *
+ * @return 值得保存返回true，否则返回false
+ */
+ private boolean isWorthSaving() {
+ if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
+ || (existInDatabase() && !mNote.isLocalModified())) {
+ return false;
+ } else {
+ return true;
+ }
+ }
+
+ /**
+ * 设置便签设置变更监听器
+ *
+ * @param l 监听器对象
+ */
+ public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
+ mNoteSettingStatusListener = l;
+ }
+
+ /**
+ * 设置提醒时间
+ *
+ * @param date 提醒时间
+ * @param set 是否设置提醒
+ */
+ public void setAlertDate(long date, boolean set) {
+ if (date != mAlertDate) {
+ mAlertDate = date;
+ mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
+ }
+ if (mNoteSettingStatusListener != null) {
+ mNoteSettingStatusListener.onClockAlertChanged(date, set);
+ }
+ }
+
+ /**
+ * 标记便签为已删除/未删除
+ *
+ * @param mark true表示已删除，false表示未删除
+ */
+ public void markDeleted(boolean mark) {
+ mIsDeleted = mark;
+ // 如果便签有关联的小部件，通知小部件变更
+ if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+ && mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
+ mNoteSettingStatusListener.onWidgetChanged();
+ }
+ }
+
+ /**
+ * 设置背景颜色ID
+ *
+ * @param id 背景颜色ID
+ */
+ public void setBgColorId(int id) {
+ if (id != mBgColorId) {
+ mBgColorId = id;
+ // 通知背景颜色变更
+ if (mNoteSettingStatusListener != null) {
+ mNoteSettingStatusListener.onBackgroundColorChanged();
+ }
+ mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
+ }
+ }
+
+ /**
+ * 设置便签模式（普通模式或清单模式）
+ *
+ * @param mode 便签模式
+ */
+ public void setCheckListMode(int mode) {
+ if (mMode != mode) {
+ // 通知便签模式变更
+ if (mNoteSettingStatusListener != null) {
+ mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
+ }
+ mMode = mode;
+ mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
+ }
+ }
+
+ /**
+ * 设置小部件类型
+ *
+ * @param type 小部件类型
+ */
+ public void setWidgetType(int type) {
+ if (type != mWidgetType) {
+ mWidgetType = type;
+ mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
+ }
+ }
+
+ /**
+ * 设置小部件ID
+ *
+ * @param id 小部件ID
+ */
+ public void setWidgetId(int id) {
+ if (id != mWidgetId) {
+ mWidgetId = id;
+ mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
+ }
+ }
+
+ /**
+ * 设置便签内容
+ *
+ * @param text 便签内容文本
+ */
+ public void setWorkingText(String text) {
+ if (!TextUtils.equals(mContent, text)) {
+ mContent = text;
+ mNote.setTextData(DataColumns.CONTENT, mContent);
+ }
+ }
+
+ /**
+ * 将普通便签转换为通话记录便签
+ *
+ * @param phoneNumber 电话号码
+ * @param callDate 通话时间
+ */
+ public void convertToCallNote(String phoneNumber, long callDate) {
+ mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
+ mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
+ mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
+ }
+
+ /**
+ * 检查便签是否设置了提醒
+ *
+ * @return 有提醒返回true，否则返回false
+ */
+ public boolean hasClockAlert() {
+ return (mAlertDate > 0 ? true : false);
+ }
+
+ /**
+ * 获取便签内容
+ *
+ * @return 便签内容文本
+ */
+ public String getContent() {
+ return mContent;
+ }
+
+ /**
+ * 获取提醒时间
+ *
+ * @return 提醒时间
+ */
+ public long getAlertDate() {
+ return mAlertDate;
+ }
+
+ /**
+ * 获取修改时间
+ *
+ * @return 修改时间
+ */
+ public long getModifiedDate() {
+ return mModifiedDate;
+ }
+
+ /**
+ * 获取背景颜色资源ID
+ *
+ * @return 背景颜色资源ID
+ */
+ public int getBgColorResId() {
+ return NoteBgResources.getNoteBgResource(mBgColorId);
+ }
+
+ /**
+ * 获取背景颜色ID
+ *
+ * @return 背景颜色ID
+ */
+ public int getBgColorId() {
+ return mBgColorId;
+ }
+
+ /**
+ * 获取标题背景资源ID
+ *
+ * @return 标题背景资源ID
+ */
+ public int getTitleBgResId() {
+ return NoteBgResources.getNoteTitleBgResource(mBgColorId);
+ }
+
+ /**
+ * 获取便签模式（普通模式或清单模式）
+ *
+ * @return 便签模式
+ */
+ public int getCheckListMode() {
+ return mMode;
+ }
+
+ /**
+ * 获取便签ID
+ *
+ * @return 便签ID
+ */
+ public long getNoteId() {
+ return mNoteId;
+ }
+
+ /**
+ * 获取所属文件夹ID
+ *
+ * @return 文件夹ID
+ */
+ public long getFolderId() {
+ return mFolderId;
+ }
+
+ /**
+ * 获取小部件ID
+ *
+ * @return 小部件ID
+ */
+ public int getWidgetId() {
+ return mWidgetId;
+ }
+
+ /**
+ * 获取小部件类型
+ *
+ * @return 小部件类型
+ */
+ public int getWidgetType() {
+ return mWidgetType;
+ }
+
+ /**
+ * 便签设置变更监听器接口
+ * 用于通知便签设置的各种变更事件
+ */
+ public interface NoteSettingChangedListener {
+ /**
+ * Called when the background color of current note has just changed
+ */
+ void onBackgroundColorChanged();
+
+ /**
+ * Called when user set clock
+ */
+ void onClockAlertChanged(long date, boolean set);
+
+ /**
+ * Call when user create note from widget
+ */
+ void onWidgetChanged();
+
+ /**
+ * Call when switch between check list mode and normal mode
+ * @param oldMode is previous mode before change
+ * @param newMode is new mode
+ */
+ void onCheckListModeChanged(int oldMode, int newMode);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/tool/BackupUtils.java b/app/src/main/java/net/micode/notes/tool/BackupUtils.java
new file mode 100644
index 0000000..93c0805
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/tool/BackupUtils.java
@@ -0,0 +1,439 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: BackupUtils.java
+ * 描述: 便签数据备份工具类，提供将便签导出为文本文件的功能
+ * 作用: 负责便签数据的备份操作，支持将便签内容导出到SD卡中的文本文件
+ */
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.os.Environment;
+import android.text.TextUtils;
+import android.text.format.DateFormat;
+import android.util.Log;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+
+/**
+ * 便签备份工具类
+ *
+ * 提供便签数据备份相关功能，主要用于将便签导出为文本文件
+ * 采用单例模式设计，确保全局只有一个实例
+ */
+public class BackupUtils {
+ private static final String TAG = "BackupUtils";
+ // 单例实例
+ private static BackupUtils sInstance;
+
+ /**
+ * 获取BackupUtils单例实例
+ *
+ * @param context 应用上下文
+ * @return BackupUtils实例
+ */
+ public static synchronized BackupUtils getInstance(Context context) {
+ if (sInstance == null) {
+ sInstance = new BackupUtils(context);
+ }
+ return sInstance;
+ }
+
+ /**
+ * 备份或恢复状态常量定义
+ */
+ // SD卡未挂载状态
+ public static final int STATE_SD_CARD_UNMOUONTED = 0;
+ // 备份文件不存在状态
+ public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
+ // 数据已损坏状态（可能被其他程序修改）
+ public static final int STATE_DATA_DESTROIED = 2;
+ // 系统错误状态（运行时异常导致备份或恢复失败）
+ public static final int STATE_SYSTEM_ERROR = 3;
+ // 操作成功状态
+ public static final int STATE_SUCCESS = 4;
+
+ // 文本导出工具实例
+ private TextExport mTextExport;
+
+ /**
+ * 私有构造函数，初始化文本导出工具
+ *
+ * @param context 应用上下文
+ */
+ private BackupUtils(Context context) {
+ mTextExport = new TextExport(context);
+ }
+
+ /**
+ * 检查外部存储是否可用
+ *
+ * @return 如果外部存储可用返回true，否则返回false
+ */
+ private static boolean externalStorageAvailable() {
+ return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
+ }
+
+ /**
+ * 将便签导出为文本文件
+ *
+ * @return 操作状态码，参见STATE_*常量
+ */
+ public int exportToText() {
+ return mTextExport.exportToText();
+ }
+
+ /**
+ * 获取导出的文本文件名
+ *
+ * @return 导出的文本文件名
+ */
+ public String getExportedTextFileName() {
+ return mTextExport.mFileName;
+ }
+
+ /**
+ * 获取导出的文本文件目录
+ *
+ * @return 导出的文本文件目录
+ */
+ public String getExportedTextFileDir() {
+ return mTextExport.mFileDirectory;
+ }
+
+ /**
+ * 文本导出内部工具类
+ *
+ * 负责将便签数据导出为格式化的文本文件
+ */
+ private static class TextExport {
+ // 便签查询投影：定义查询便签时需要获取的列
+ private static final String[] NOTE_PROJECTION = {
+ NoteColumns.ID,
+ NoteColumns.MODIFIED_DATE,
+ NoteColumns.SNIPPET,
+ NoteColumns.TYPE
+ };
+
+ // 便签ID列索引
+ private static final int NOTE_COLUMN_ID = 0;
+
+ // 便签修改日期列索引
+ private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
+
+ // 便签摘要列索引
+ private static final int NOTE_COLUMN_SNIPPET = 2;
+
+ // 便签数据查询投影：定义查询便签数据时需要获取的列
+ private static final String[] DATA_PROJECTION = {
+ DataColumns.CONTENT,
+ DataColumns.MIME_TYPE,
+ DataColumns.DATA1,
+ DataColumns.DATA2,
+ DataColumns.DATA3,
+ DataColumns.DATA4,
+ };
+
+ // 便签内容列索引
+ private static final int DATA_COLUMN_CONTENT = 0;
+
+ // 便签MIME类型列索引
+ private static final int DATA_COLUMN_MIME_TYPE = 1;
+
+ // 通话日期列索引
+ private static final int DATA_COLUMN_CALL_DATE = 2;
+
+ // 电话号码列索引
+ private static final int DATA_COLUMN_PHONE_NUMBER = 4;
+
+ // 文本格式化模板数组
+ private final String [] TEXT_FORMAT;
+ // 文件夹名称格式索引
+ private static final int FORMAT_FOLDER_NAME = 0;
+ // 便签日期格式索引
+ private static final int FORMAT_NOTE_DATE = 1;
+ // 便签内容格式索引
+ private static final int FORMAT_NOTE_CONTENT = 2;
+
+ // 上下文环境
+ private Context mContext;
+ // 导出文件名
+ private String mFileName;
+ // 导出文件目录
+ private String mFileDirectory;
+
+ /**
+ * 构造函数，初始化文本导出工具
+ *
+ * @param context 应用上下文
+ */
+ public TextExport(Context context) {
+ // 从资源文件加载文本格式化模板
+ TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
+ mContext = context;
+ mFileName = "";
+ mFileDirectory = "";
+ }
+
+ /**
+ * 获取指定索引的格式化模板
+ *
+ * @param id 格式化模板索引
+ * @return 格式化模板字符串
+ */
+ private String getFormat(int id) {
+ return TEXT_FORMAT[id];
+ }
+
+ /**
+ * 将指定文件夹下的便签导出为文本
+ *
+ * @param folderId 文件夹ID
+ * @param ps 输出流
+ */
+ private void exportFolderToText(String folderId, PrintStream ps) {
+ // 查询属于此文件夹的便签
+ Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+ NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] {
+ folderId
+ }, null);
+
+ if (notesCursor != null) {
+ if (notesCursor.moveToFirst()) {
+ do {
+ // 输出便签的最后修改日期
+ ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
+ mContext.getString(R.string.format_datetime_mdhm),
+ notesCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
+ // 查询并导出此便签的数据
+ String noteId = notesCursor.getString(NOTE_COLUMN_ID);
+ exportNoteToText(noteId, ps);
+ } while (notesCursor.moveToNext());
+ }
+ notesCursor.close();
+ }
+ }
+
+ /**
+ * 将指定ID的便签导出到输出流
+ *
+ * @param noteId 便签ID
+ * @param ps 输出流
+ */
+ private void exportNoteToText(String noteId, PrintStream ps) {
+ // 查询便签数据
+ Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,
+ DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] {
+ noteId
+ }, null);
+
+ if (dataCursor != null) {
+ if (dataCursor.moveToFirst()) {
+ do {
+ String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);
+ // 处理通话记录便签
+ if (DataConstants.CALL_NOTE.equals(mimeType)) {
+ // 输出电话号码
+ String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
+ long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
+ String location = dataCursor.getString(DATA_COLUMN_CONTENT);
+
+ if (!TextUtils.isEmpty(phoneNumber)) {
+ ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+ phoneNumber));
+ }
+ // 输出通话日期
+ ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
+ .format(mContext.getString(R.string.format_datetime_mdhm),
+ callDate)));
+ // 输出通话附件位置
+ if (!TextUtils.isEmpty(location)) {
+ ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+ location));
+ }
+ }
+ // 处理普通文本便签
+ else if (DataConstants.NOTE.equals(mimeType)) {
+ String content = dataCursor.getString(DATA_COLUMN_CONTENT);
+ if (!TextUtils.isEmpty(content)) {
+ ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+ content));
+ }
+ }
+ } while (dataCursor.moveToNext());
+ }
+ dataCursor.close();
+ }
+ // 在便签之间打印一个分隔行
+ try {
+ ps.write(new byte[] {
+ Character.LINE_SEPARATOR, Character.LETTER_NUMBER
+ });
+ } catch (IOException e) {
+ Log.e(TAG, e.toString());
+ }
+ }
+
+ /**
+ * 将便签导出为文本文件
+ *
+ * @return 操作状态码，参见STATE_*常量
+ */
+ public int exportToText() {
+ // 检查外部存储是否可用
+ if (!externalStorageAvailable()) {
+ Log.d(TAG, "Media was not mounted");
+ return STATE_SD_CARD_UNMOUONTED;
+ }
+
+ // 获取输出流
+ PrintStream ps = getExportToTextPrintStream();
+ if (ps == null) {
+ Log.e(TAG, "get print stream error");
+ return STATE_SYSTEM_ERROR;
+ }
+ // 首先导出文件夹及其便签
+ Cursor folderCursor = mContext.getContentResolver().query(
+ Notes.CONTENT_NOTE_URI,
+ NOTE_PROJECTION,
+ "(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
+ + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
+ + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null);
+
+ if (folderCursor != null) {
+ if (folderCursor.moveToFirst()) {
+ do {
+ // 输出文件夹名称
+ String folderName = "";
+ if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
+ folderName = mContext.getString(R.string.call_record_folder_name);
+ } else {
+ folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
+ }
+ if (!TextUtils.isEmpty(folderName)) {
+ ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
+ }
+ String folderId = folderCursor.getString(NOTE_COLUMN_ID);
+ exportFolderToText(folderId, ps);
+ } while (folderCursor.moveToNext());
+ }
+ folderCursor.close();
+ }
+
+ // Export notes in root's folder
+ Cursor noteCursor = mContext.getContentResolver().query(
+ Notes.CONTENT_NOTE_URI,
+ NOTE_PROJECTION,
+ NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
+ + "=0", null, null);
+
+ if (noteCursor != null) {
+ if (noteCursor.moveToFirst()) {
+ do {
+ ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
+ mContext.getString(R.string.format_datetime_mdhm),
+ noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
+ // Query data belong to this note
+ String noteId = noteCursor.getString(NOTE_COLUMN_ID);
+ exportNoteToText(noteId, ps);
+ } while (noteCursor.moveToNext());
+ }
+ noteCursor.close();
+ }
+ ps.close();
+
+ return STATE_SUCCESS;
+ }
+
+ /**
+ * 获取导出文本的打印流
+ *
+ * @return 打印流对象，如果创建失败则返回null
+ */
+ private PrintStream getExportToTextPrintStream() {
+ File file = generateFileMountedOnSDcard(mContext, R.string.file_path,
+ R.string.file_name_txt_format);
+ if (file == null) {
+ Log.e(TAG, "create file to exported failed");
+ return null;
+ }
+ mFileName = file.getName();
+ mFileDirectory = mContext.getString(R.string.file_path);
+ PrintStream ps = null;
+ try {
+ FileOutputStream fos = new FileOutputStream(file);
+ ps = new PrintStream(fos);
+ } catch (FileNotFoundException e) {
+ e.printStackTrace();
+ return null;
+ } catch (NullPointerException e) {
+ e.printStackTrace();
+ return null;
+ }
+ return ps;
+ }
+ }
+
+ /**
+ * 在SD卡上生成文件
+ *
+ * @param context 应用上下文
+ * @param filePathResId 文件路径资源ID
+ * @param fileNameFormatResId 文件名格式资源ID
+ * @return 生成的文件对象，如果创建失败则返回null
+ */
+ private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
+ StringBuilder sb = new StringBuilder();
+ sb.append(Environment.getExternalStorageDirectory());
+ sb.append(context.getString(filePathResId));
+ File filedir = new File(sb.toString());
+ sb.append(context.getString(
+ fileNameFormatResId,
+ DateFormat.format(context.getString(R.string.format_date_ymd),
+ System.currentTimeMillis())));
+ File file = new File(sb.toString());
+
+ try {
+ if (!filedir.exists()) {
+ filedir.mkdir();
+ }
+ if (!file.exists()) {
+ file.createNewFile();
+ }
+ return file;
+ } catch (SecurityException e) {
+ e.printStackTrace();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+
+ return null;
+ }
+}
+
+
diff --git a/app/src/main/java/net/micode/notes/tool/DataUtils.java b/app/src/main/java/net/micode/notes/tool/DataUtils.java
new file mode 100644
index 0000000..8f9103b
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/tool/DataUtils.java
@@ -0,0 +1,445 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: DataUtils.java
+ * 描述: 便签数据操作工具类，提供便签数据的批量处理和查询功能
+ * 作用: 封装对便签数据的各种操作，如批量删除、移动便签、查询便签信息等
+ */
+package net.micode.notes.tool;
+
+import android.content.ContentProviderOperation;
+import android.content.ContentProviderResult;
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.OperationApplicationException;
+import android.database.Cursor;
+import android.os.RemoteException;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+
+/**
+ * 便签数据操作工具类
+ *
+ * 提供便签数据的批量操作和查询功能，包括批量删除、移动便签、查询便签信息等
+ * 所有方法都是静态的，可以直接通过类名调用
+ */
+public class DataUtils {
+ public static final String TAG = "DataUtils";
+
+ /**
+ * 批量删除便签
+ *
+ * @param resolver 内容解析器
+ * @param ids 要删除的便签ID集合
+ * @return 删除成功返回true，失败返回false
+ */
+ public static boolean batchDeleteNotes(ContentResolver resolver, HashSet ids) {
+ // 检查参数有效性
+ if (ids == null) {
+ Log.d(TAG, "the ids is null");
+ return true;
+ }
+ if (ids.size() == 0) {
+ Log.d(TAG, "no id is in the hashset");
+ return true;
+ }
+
+ // 创建批量操作列表
+ ArrayList operationList = new ArrayList();
+ for (long id : ids) {
+ // 不允许删除根文件夹
+ if(id == Notes.ID_ROOT_FOLDER) {
+ Log.e(TAG, "Don't delete system folder root");
+ continue;
+ }
+ // 为每个便签ID创建删除操作
+ ContentProviderOperation.Builder builder = ContentProviderOperation
+ .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
+ operationList.add(builder.build());
+ }
+
+ try {
+ // 执行批量操作
+ ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
+ // 检查操作结果
+ if (results == null || results.length == 0 || results[0] == null) {
+ Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+ return false;
+ }
+ return true;
+ } catch (RemoteException e) {
+ // 远程异常处理
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ } catch (OperationApplicationException e) {
+ // 操作应用异常处理
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ }
+ return false;
+ }
+
+ /**
+ * 将便签移动到指定文件夹
+ *
+ * @param resolver 内容解析器
+ * @param id 便签ID
+ * @param srcFolderId 源文件夹ID
+ * @param desFolderId 目标文件夹ID
+ */
+ public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
+ // 创建更新数据
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.PARENT_ID, desFolderId); // 设置新的父文件夹ID
+ values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); // 保存原始父文件夹ID
+ values.put(NoteColumns.LOCAL_MODIFIED, 1); // 标记为本地已修改
+
+ // 更新便签数据
+ resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
+ }
+
+ /**
+ * 批量将便签移动到指定文件夹
+ *
+ * @param resolver 内容解析器
+ * @param ids 要移动的便签ID集合
+ * @param folderId 目标文件夹ID
+ * @return 移动成功返回true，失败返回false
+ */
+ public static boolean batchMoveToFolder(ContentResolver resolver, HashSet ids,
+ long folderId) {
+ // 检查参数有效性
+ if (ids == null) {
+ Log.d(TAG, "the ids is null");
+ return true;
+ }
+
+ // 创建批量操作列表
+ ArrayList operationList = new ArrayList();
+ for (long id : ids) {
+ // 为每个便签ID创建更新操作
+ ContentProviderOperation.Builder builder = ContentProviderOperation
+ .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
+ builder.withValue(NoteColumns.PARENT_ID, folderId); // 设置新的父文件夹ID
+ builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); // 标记为本地已修改
+ operationList.add(builder.build());
+ }
+
+ try {
+ // 执行批量操作
+ ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
+ // 检查操作结果
+ if (results == null || results.length == 0 || results[0] == null) {
+ Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+ return false;
+ }
+ return true;
+ } catch (RemoteException e) {
+ // 远程异常处理
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ } catch (OperationApplicationException e) {
+ // 操作应用异常处理
+ Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+ }
+ return false;
+ }
+
+ /**
+ * 获取用户文件夹数量（不包括系统文件夹）
+ *
+ * @param resolver 内容解析器
+ * @return 用户文件夹数量
+ */
+ public static int getUserFolderCount(ContentResolver resolver) {
+ // 查询类型为文件夹且不在回收站中的记录数量
+ Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
+ new String[] { "COUNT(*)" },
+ NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+ new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
+ null);
+
+ int count = 0;
+ if(cursor != null) {
+ if(cursor.moveToFirst()) {
+ try {
+ // 获取查询结果中的计数值
+ count = cursor.getInt(0);
+ } catch (IndexOutOfBoundsException e) {
+ // 索引越界异常处理
+ Log.e(TAG, "get folder count failed:" + e.toString());
+ } finally {
+ // 确保关闭游标
+ cursor.close();
+ }
+ }
+ }
+ return count;
+ }
+
+ /**
+ * 检查指定ID和类型的便签是否可见（不在回收站中）
+ *
+ * @param resolver 内容解析器
+ * @param noteId 便签ID
+ * @param type 便签类型
+ * @return 如果便签可见返回true，否则返回false
+ */
+ public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
+ // 查询指定ID和类型的便签，且不在回收站中
+ Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+ null,
+ NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
+ new String [] {String.valueOf(type)},
+ null);
+
+ boolean exist = false;
+ if (cursor != null) {
+ // 如果查询结果不为空，则便签存在且可见
+ if (cursor.getCount() > 0) {
+ exist = true;
+ }
+ cursor.close();
+ }
+ return exist;
+ }
+
+ /**
+ * 检查指定ID的便签是否存在于数据库中
+ *
+ * @param resolver 内容解析器
+ * @param noteId 便签ID
+ * @return 如果便签存在返回true，否则返回false
+ */
+ public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
+ // 查询指定ID的便签
+ Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+ null, null, null, null);
+
+ boolean exist = false;
+ if (cursor != null) {
+ // 如果查询结果不为空，则便签存在
+ if (cursor.getCount() > 0) {
+ exist = true;
+ }
+ cursor.close();
+ }
+ return exist;
+ }
+
+ /**
+ * 检查指定ID的数据是否存在于数据库中
+ *
+ * @param resolver 内容解析器
+ * @param dataId 数据ID
+ * @return 如果数据存在返回true，否则返回false
+ */
+ public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
+ // 查询指定ID的数据
+ Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
+ null, null, null, null);
+
+ boolean exist = false;
+ if (cursor != null) {
+ // 如果查询结果不为空，则数据存在
+ if (cursor.getCount() > 0) {
+ exist = true;
+ }
+ cursor.close();
+ }
+ return exist;
+ }
+
+ /**
+ * 检查可见文件夹中是否存在指定名称的文件夹
+ *
+ * @param resolver 内容解析器
+ * @param name 文件夹名称
+ * @return 如果存在返回true，否则返回false
+ */
+ public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
+ // 查询类型为文件夹、不在回收站中且名称匹配的记录
+ Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
+ NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER +
+ " AND " + NoteColumns.SNIPPET + "=?",
+ new String[] { name }, null);
+
+ boolean exist = false;
+ if(cursor != null) {
+ // 如果查询结果不为空，则存在同名文件夹
+ if(cursor.getCount() > 0) {
+ exist = true;
+ }
+ cursor.close();
+ }
+ return exist;
+ }
+
+ /**
+ * 获取指定文件夹中的所有小部件属性
+ *
+ * @param resolver 内容解析器
+ * @param folderId 文件夹ID
+ * @return 小部件属性集合，如果没有则返回null
+ */
+ public static HashSet getFolderNoteWidget(ContentResolver resolver, long folderId) {
+ // 查询指定文件夹中便签的小部件ID和类型
+ Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
+ new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
+ NoteColumns.PARENT_ID + "=?",
+ new String[] { String.valueOf(folderId) },
+ null);
+
+ HashSet set = null;
+ if (c != null) {
+ if (c.moveToFirst()) {
+ // 创建小部件属性集合
+ set = new HashSet();
+ do {
+ try {
+ // 提取小部件ID和类型
+ AppWidgetAttribute widget = new AppWidgetAttribute();
+ widget.widgetId = c.getInt(0);
+ widget.widgetType = c.getInt(1);
+ set.add(widget);
+ } catch (IndexOutOfBoundsException e) {
+ // 索引越界异常处理
+ Log.e(TAG, e.toString());
+ }
+ } while (c.moveToNext());
+ }
+ c.close();
+ }
+ return set;
+ }
+
+ /**
+ * 根据便签ID获取关联的电话号码
+ *
+ * @param resolver 内容解析器
+ * @param noteId 便签ID
+ * @return 电话号码字符串，如果没有则返回空字符串
+ */
+ public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
+ // 查询指定便签ID和MIME类型的通话记录数据
+ Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+ new String [] { CallNote.PHONE_NUMBER },
+ CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
+ new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
+ null);
+
+ if (cursor != null && cursor.moveToFirst()) {
+ try {
+ // 返回电话号码
+ return cursor.getString(0);
+ } catch (IndexOutOfBoundsException e) {
+ // 索引越界异常处理
+ Log.e(TAG, "Get call number fails " + e.toString());
+ } finally {
+ // 确保关闭游标
+ cursor.close();
+ }
+ }
+ return "";
+ }
+
+ /**
+ * 根据电话号码和通话日期获取便签ID
+ *
+ * @param resolver 内容解析器
+ * @param phoneNumber 电话号码
+ * @param callDate 通话日期
+ * @return 便签ID，如果没有找到则返回0
+ */
+ public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
+ // 查询匹配电话号码和通话日期的便签ID
+ Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+ new String [] { CallNote.NOTE_ID },
+ CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
+ + CallNote.PHONE_NUMBER + ",?)",
+ new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber},
+ null);
+
+ if (cursor != null) {
+ if (cursor.moveToFirst()) {
+ try {
+ // 返回便签ID
+ return cursor.getLong(0);
+ } catch (IndexOutOfBoundsException e) {
+ Log.e(TAG, "Get note id by phone number and call date fails: " + e.toString());
+ } finally {
+ cursor.close();
+ }
+ } else {
+ cursor.close();
+ }
+ }
+ return 0;
+ }
+
+ /**
+ * 根据便签ID获取便签摘要
+ *
+ * @param resolver 内容解析器
+ * @param noteId 便签ID
+ * @return 便签摘要，如果没有则返回空字符串
+ */
+ public static String getSnippetById(ContentResolver resolver, long noteId) {
+ // 查询指定便签ID的摘要
+ Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+ new String[] { NoteColumns.SNIPPET },
+ null,
+ null,
+ null);
+
+ if (cursor != null) {
+ if (cursor.moveToFirst()) {
+ try {
+ // 返回便签摘要
+ return cursor.getString(0);
+ } catch (IndexOutOfBoundsException e) {
+ Log.e(TAG, "Get snippet fails: " + e.toString());
+ } finally {
+ cursor.close();
+ }
+ } else {
+ cursor.close();
+ }
+ }
+ return "";
+ }
+
+ /**
+ * 格式化便签摘要，处理特殊字符和长度
+ *
+ * @param snippet 原始摘要
+ * @return 格式化后的摘要
+ */
+ public static String getFormattedSnippet(String snippet) {
+ if (snippet != null) {
+ // 替换换行符为空格
+ snippet = snippet.replace('\n', ' ');
+ }
+ return snippet;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/tool/GTaskStringUtils.java b/app/src/main/java/net/micode/notes/tool/GTaskStringUtils.java
new file mode 100644
index 0000000..3a4efab
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/tool/GTaskStringUtils.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: GTaskStringUtils.java
+ * 描述: Google Tasks同步功能相关的字符串常量定义类
+ * 作用: 定义Google Tasks API交互所需的JSON字段名称和常量值，便于同步功能的实现
+ */
+package net.micode.notes.tool;
+
+/**
+ * Google Tasks字符串工具类
+ *
+ * 该类定义了与Google Tasks同步功能相关的所有字符串常量，包括：
+ * - JSON字段名称
+ * - 操作类型常量
+ * - 实体类型常量
+ * - 文件夹名称前缀
+ * - 元数据标识符
+ *
+ * 这些常量用于构建和解析与Google Tasks API交互的JSON数据
+ */
+public class GTaskStringUtils {
+
+ /**
+ * JSON字段名: 操作ID
+ * 用于标识同步操作的唯一ID
+ */
+ public final static String GTASK_JSON_ACTION_ID = "action_id";
+
+ /**
+ * JSON字段名: 操作列表
+ * 包含多个操作的数组
+ */
+ public final static String GTASK_JSON_ACTION_LIST = "action_list";
+
+ /**
+ * JSON字段名: 操作类型
+ * 指定要执行的操作类型
+ */
+ public final static String GTASK_JSON_ACTION_TYPE = "action_type";
+
+ /**
+ * 操作类型常量: 创建
+ * 用于创建新的任务或列表
+ */
+ public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create";
+
+ /**
+ * 操作类型常量: 获取全部
+ * 用于获取所有任务或列表
+ */
+ public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all";
+
+ /**
+ * 操作类型常量: 移动
+ * 用于移动任务位置或更改任务所属列表
+ */
+ public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move";
+
+ /**
+ * 操作类型常量: 更新
+ * 用于更新现有任务或列表的内容
+ */
+ public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update";
+
+ /**
+ * JSON字段名: 创建者ID
+ * 任务或列表的创建者标识
+ */
+ public final static String GTASK_JSON_CREATOR_ID = "creator_id";
+
+ /**
+ * JSON字段名: 子实体
+ * 包含子任务或子列表的数组
+ */
+ public final static String GTASK_JSON_CHILD_ENTITY = "child_entity";
+
+ /**
+ * JSON字段名: 客户端版本
+ * 客户端应用的版本号
+ */
+ public final static String GTASK_JSON_CLIENT_VERSION = "client_version";
+
+ /**
+ * JSON字段名: 已完成
+ * 表示任务是否已完成
+ */
+ public final static String GTASK_JSON_COMPLETED = "completed";
+
+ /**
+ * JSON字段名: 当前列表ID
+ * 当前操作的列表ID
+ */
+ public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id";
+
+ /**
+ * JSON字段名: 默认列表ID
+ * 用户的默认列表ID
+ */
+ public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id";
+
+ /**
+ * JSON字段名: 已删除
+ * 表示任务或列表是否已被删除
+ */
+ public final static String GTASK_JSON_DELETED = "deleted";
+
+ /**
+ * JSON字段名: 目标列表
+ * 移动操作的目标列表
+ */
+ public final static String GTASK_JSON_DEST_LIST = "dest_list";
+
+ /**
+ * JSON字段名: 目标父级
+ * 移动操作的目标父级任务
+ */
+ public final static String GTASK_JSON_DEST_PARENT = "dest_parent";
+
+ /**
+ * JSON字段名: 目标父级类型
+ * 移动操作的目标父级类型
+ */
+ public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type";
+
+ /**
+ * JSON字段名: 实体变更
+ * 描述实体变更的数据
+ */
+ public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta";
+
+ /**
+ * JSON字段名: 实体类型
+ * 指定实体的类型（任务或列表）
+ */
+ public final static String GTASK_JSON_ENTITY_TYPE = "entity_type";
+
+ /**
+ * JSON字段名: 获取已删除
+ * 是否获取已删除的任务或列表
+ */
+ public final static String GTASK_JSON_GET_DELETED = "get_deleted";
+
+ /**
+ * JSON字段名: ID
+ * 任务或列表的唯一标识符
+ */
+ public final static String GTASK_JSON_ID = "id";
+
+ /**
+ * JSON字段名: 索引
+ * 任务在列表中的位置索引
+ */
+ public final static String GTASK_JSON_INDEX = "index";
+
+ /**
+ * JSON字段名: 最后修改时间
+ * 任务或列表的最后修改时间戳
+ */
+ public final static String GTASK_JSON_LAST_MODIFIED = "last_modified";
+
+ /**
+ * JSON字段名: 最新同步点
+ * 最近一次同步的时间点
+ */
+ public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point";
+
+ /**
+ * JSON字段名: 列表ID
+ * 任务所属的列表ID
+ */
+ public final static String GTASK_JSON_LIST_ID = "list_id";
+
+ /**
+ * JSON字段名: 列表
+ * 包含多个列表的数组
+ */
+ public final static String GTASK_JSON_LISTS = "lists";
+
+ /**
+ * JSON字段名: 名称
+ * 任务或列表的名称
+ */
+ public final static String GTASK_JSON_NAME = "name";
+
+ /**
+ * JSON字段名: 新ID
+ * 创建操作后分配的新ID
+ */
+ public final static String GTASK_JSON_NEW_ID = "new_id";
+
+ /**
+ * JSON字段名: 便签
+ * 包含多个便签的数组
+ */
+ public final static String GTASK_JSON_NOTES = "notes";
+
+ /**
+ * JSON字段名: 父级ID
+ * 子任务的父任务ID
+ */
+ public final static String GTASK_JSON_PARENT_ID = "parent_id";
+
+ /**
+ * JSON字段名: 前一个兄弟ID
+ * 列表中当前任务前一个任务的ID
+ */
+ public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id";
+
+ /**
+ * JSON字段名: 结果
+ * API操作的结果数据
+ */
+ public final static String GTASK_JSON_RESULTS = "results";
+
+ /**
+ * JSON字段名: 源列表
+ * 移动操作的源列表
+ */
+ public final static String GTASK_JSON_SOURCE_LIST = "source_list";
+
+ /**
+ * JSON字段名: 任务
+ * 包含多个任务的数组
+ */
+ public final static String GTASK_JSON_TASKS = "tasks";
+
+ /**
+ * JSON字段名: 类型
+ * 实体的类型标识
+ */
+ public final static String GTASK_JSON_TYPE = "type";
+
+ /**
+ * 实体类型常量: 组/文件夹
+ * 表示实体是一个组或文件夹
+ */
+ public final static String GTASK_JSON_TYPE_GROUP = "GROUP";
+
+ /**
+ * 实体类型常量: 任务
+ * 表示实体是一个任务
+ */
+ public final static String GTASK_JSON_TYPE_TASK = "TASK";
+
+ /**
+ * JSON字段名: 用户
+ * 用户标识信息
+ */
+ public final static String GTASK_JSON_USER = "user";
+
+ /**
+ * 文件夹名称前缀
+ * 用于标识MIUI便签创建的文件夹
+ */
+ public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
+
+ /**
+ * 默认文件夹名称
+ * 用于存储默认便签
+ */
+ public final static String FOLDER_DEFAULT = "Default";
+
+ /**
+ * 通话记录文件夹名称
+ * 用于存储通话记录便签
+ */
+ public final static String FOLDER_CALL_NOTE = "Call_Note";
+
+ /**
+ * 元数据文件夹名称
+ * 用于存储同步元数据
+ */
+ public final static String FOLDER_META = "METADATA";
+
+ /**
+ * 元数据头部: Google Task ID
+ * 用于存储便签对应的Google Task ID
+ */
+ public final static String META_HEAD_GTASK_ID = "meta_gid";
+
+ /**
+ * 元数据头部: 便签
+ * 用于标识便签元数据
+ */
+ public final static String META_HEAD_NOTE = "meta_note";
+
+ /**
+ * 元数据头部: 数据
+ * 用于标识便签数据元数据
+ */
+ public final static String META_HEAD_DATA = "meta_data";
+
+ /**
+ * 元数据便签名称
+ * 用于标识元数据便签，提示用户不要更新或删除
+ */
+ public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
+
+}
diff --git a/app/src/main/java/net/micode/notes/tool/ResourceParser.java b/app/src/main/java/net/micode/notes/tool/ResourceParser.java
new file mode 100644
index 0000000..b810602
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/tool/ResourceParser.java
@@ -0,0 +1,367 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: ResourceParser.java
+ * 描述: 资源解析工具类，用于管理应用中的各种资源ID和常量
+ * 作用: 提供便签背景颜色、文本大小等资源的统一访问接口，便于UI层使用
+ */
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.preference.PreferenceManager;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+/**
+ * 资源解析工具类
+ *
+ * 该类负责管理和提供应用中使用的各种资源ID和常量，包括：
+ * - 便签背景颜色资源
+ * - 便签列表项背景资源
+ * - 小部件背景资源
+ * - 文本外观样式资源
+ *
+ * 通过集中管理这些资源，使得UI层可以方便地访问和使用它们
+ */
+public class ResourceParser {
+
+ /**
+ * 背景颜色常量: 黄色
+ */
+ public static final int YELLOW = 0;
+
+ /**
+ * 背景颜色常量: 蓝色
+ */
+ public static final int BLUE = 1;
+
+ /**
+ * 背景颜色常量: 白色
+ */
+ public static final int WHITE = 2;
+
+ /**
+ * 背景颜色常量: 绿色
+ */
+ public static final int GREEN = 3;
+
+ /**
+ * 背景颜色常量: 红色
+ */
+ public static final int RED = 4;
+
+ /**
+ * 默认背景颜色: 黄色
+ */
+ public static final int BG_DEFAULT_COLOR = YELLOW;
+
+ /**
+ * 文本大小常量: 小号
+ */
+ public static final int TEXT_SMALL = 0;
+
+ /**
+ * 文本大小常量: 中号
+ */
+ public static final int TEXT_MEDIUM = 1;
+
+ /**
+ * 文本大小常量: 大号
+ */
+ public static final int TEXT_LARGE = 2;
+
+ /**
+ * 文本大小常量: 超大号
+ */
+ public static final int TEXT_SUPER = 3;
+
+ /**
+ * 默认文本大小: 中号
+ */
+ public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
+
+ /**
+ * 便签背景资源类
+ *
+ * 提供便签编辑界面的背景资源和标题栏背景资源
+ */
+ public static class NoteBgResources {
+ /**
+ * 便签编辑背景资源数组
+ * 按颜色索引存储不同颜色的背景资源ID
+ */
+ private final static int [] BG_EDIT_RESOURCES = new int [] {
+ R.drawable.edit_yellow,
+ R.drawable.edit_blue,
+ R.drawable.edit_white,
+ R.drawable.edit_green,
+ R.drawable.edit_red
+ };
+
+ /**
+ * 便签编辑标题背景资源数组
+ * 按颜色索引存储不同颜色的标题背景资源ID
+ */
+ private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] {
+ R.drawable.edit_title_yellow,
+ R.drawable.edit_title_blue,
+ R.drawable.edit_title_white,
+ R.drawable.edit_title_green,
+ R.drawable.edit_title_red
+ };
+
+ /**
+ * 获取便签背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的背景资源ID
+ */
+ public static int getNoteBgResource(int id) {
+ return BG_EDIT_RESOURCES[id];
+ }
+
+ /**
+ * 获取便签标题背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的标题背景资源ID
+ */
+ public static int getNoteTitleBgResource(int id) {
+ return BG_EDIT_TITLE_RESOURCES[id];
+ }
+ }
+
+ /**
+ * 获取默认背景颜色ID
+ *
+ * 根据用户设置决定是随机选择背景颜色还是使用固定的默认颜色
+ *
+ * @param context 上下文环境
+ * @return 背景颜色ID
+ */
+ public static int getDefaultBgId(Context context) {
+ // 检查用户是否设置了随机背景颜色
+ if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
+ NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
+ // 随机选择一种背景颜色
+ return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
+ } else {
+ // 使用默认背景颜色
+ return BG_DEFAULT_COLOR;
+ }
+ }
+
+ /**
+ * 便签列表项背景资源类
+ *
+ * 提供便签列表中不同位置项目的背景资源
+ */
+ public static class NoteItemBgResources {
+ /**
+ * 列表第一项背景资源数组
+ * 按颜色索引存储不同颜色的第一项背景资源ID
+ */
+ private final static int [] BG_FIRST_RESOURCES = new int [] {
+ R.drawable.list_yellow_up,
+ R.drawable.list_blue_up,
+ R.drawable.list_white_up,
+ R.drawable.list_green_up,
+ R.drawable.list_red_up
+ };
+
+ /**
+ * 列表中间项背景资源数组
+ * 按颜色索引存储不同颜色的中间项背景资源ID
+ */
+ private final static int [] BG_NORMAL_RESOURCES = new int [] {
+ R.drawable.list_yellow_middle,
+ R.drawable.list_blue_middle,
+ R.drawable.list_white_middle,
+ R.drawable.list_green_middle,
+ R.drawable.list_red_middle
+ };
+
+ /**
+ * 列表最后一项背景资源数组
+ * 按颜色索引存储不同颜色的最后一项背景资源ID
+ */
+ private final static int [] BG_LAST_RESOURCES = new int [] {
+ R.drawable.list_yellow_down,
+ R.drawable.list_blue_down,
+ R.drawable.list_white_down,
+ R.drawable.list_green_down,
+ R.drawable.list_red_down,
+ };
+
+ /**
+ * 列表单项背景资源数组
+ * 按颜色索引存储不同颜色的单项背景资源ID（当列表只有一项时使用）
+ */
+ private final static int [] BG_SINGLE_RESOURCES = new int [] {
+ R.drawable.list_yellow_single,
+ R.drawable.list_blue_single,
+ R.drawable.list_white_single,
+ R.drawable.list_green_single,
+ R.drawable.list_red_single
+ };
+
+ /**
+ * 获取列表第一项的背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的第一项背景资源ID
+ */
+ public static int getNoteBgFirstRes(int id) {
+ return BG_FIRST_RESOURCES[id];
+ }
+
+ /**
+ * 获取列表最后一项的背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的最后一项背景资源ID
+ */
+ public static int getNoteBgLastRes(int id) {
+ return BG_LAST_RESOURCES[id];
+ }
+
+ /**
+ * 获取列表单项的背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的单项背景资源ID
+ */
+ public static int getNoteBgSingleRes(int id) {
+ return BG_SINGLE_RESOURCES[id];
+ }
+
+ /**
+ * 获取列表中间项的背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的中间项背景资源ID
+ */
+ public static int getNoteBgNormalRes(int id) {
+ return BG_NORMAL_RESOURCES[id];
+ }
+
+ /**
+ * 获取文件夹背景资源ID
+ *
+ * @return 文件夹背景资源ID
+ */
+ public static int getFolderBgRes() {
+ return R.drawable.list_folder;
+ }
+ }
+
+ /**
+ * 小部件背景资源类
+ *
+ * 提供不同尺寸小部件的背景资源
+ */
+ public static class WidgetBgResources {
+ /**
+ * 2x小部件背景资源数组
+ * 按颜色索引存储不同颜色的2x小部件背景资源ID
+ */
+ private final static int [] BG_2X_RESOURCES = new int [] {
+ R.drawable.widget_2x_yellow,
+ R.drawable.widget_2x_blue,
+ R.drawable.widget_2x_white,
+ R.drawable.widget_2x_green,
+ R.drawable.widget_2x_red,
+ };
+
+ /**
+ * 获取2x小部件背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的2x小部件背景资源ID
+ */
+ public static int getWidget2xBgResource(int id) {
+ return BG_2X_RESOURCES[id];
+ }
+
+ /**
+ * 4x小部件背景资源数组
+ * 按颜色索引存储不同颜色的4x小部件背景资源ID
+ */
+ private final static int [] BG_4X_RESOURCES = new int [] {
+ R.drawable.widget_4x_yellow,
+ R.drawable.widget_4x_blue,
+ R.drawable.widget_4x_white,
+ R.drawable.widget_4x_green,
+ R.drawable.widget_4x_red
+ };
+
+ /**
+ * 获取4x小部件背景资源ID
+ *
+ * @param id 颜色索引
+ * @return 对应颜色的4x小部件背景资源ID
+ */
+ public static int getWidget4xBgResource(int id) {
+ return BG_4X_RESOURCES[id];
+ }
+ }
+
+ /**
+ * 文本外观资源类
+ *
+ * 提供不同大小的文本外观样式资源
+ */
+ public static class TextAppearanceResources {
+ /**
+ * 文本外观样式资源数组
+ * 按大小索引存储不同大小的文本外观样式资源ID
+ */
+ private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
+ R.style.TextAppearanceNormal,
+ R.style.TextAppearanceMedium,
+ R.style.TextAppearanceLarge,
+ R.style.TextAppearanceSuper
+ };
+
+ /**
+ * 获取文本外观样式资源ID
+ *
+ * @param id 大小索引
+ * @return 对应大小的文本外观样式资源ID
+ */
+ public static int getTexAppearanceResource(int id) {
+ /**
+ * 修复Bug: 修复在共享偏好中存储资源ID的问题
+ * ID可能大于资源数组长度，在这种情况下返回默认字体大小
+ */
+ if (id >= TEXTAPPEARANCE_RESOURCES.length) {
+ return BG_DEFAULT_FONT_SIZE;
+ }
+ return TEXTAPPEARANCE_RESOURCES[id];
+ }
+
+ /**
+ * 获取文本外观资源数组大小
+ *
+ * @return 文本外观资源数组大小
+ */
+ public static int getResourcesSize() {
+ return TEXTAPPEARANCE_RESOURCES.length;
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java b/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
new file mode 100644
index 0000000..4ca84ad
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
@@ -0,0 +1,253 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: AlarmAlertActivity.java
+ * 描述: 便签提醒闹钟弹窗界面
+ * 作用: 当便签设置的提醒时间到达时，显示提醒对话框并播放闹钟声音
+ * 功能:
+ * 1. 在锁屏状态下也能显示提醒
+ * 2. 播放系统闹钟铃声
+ * 3. 显示便签内容预览
+ * 4. 提供快速进入便签编辑的选项
+ */
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.DialogInterface.OnDismissListener;
+import android.content.Intent;
+import android.media.AudioManager;
+import android.media.MediaPlayer;
+import android.media.RingtoneManager;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.PowerManager;
+import android.provider.Settings;
+import android.view.Window;
+import android.view.WindowManager;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.DataUtils;
+
+import java.io.IOException;
+
+/**
+ * 便签提醒弹窗活动类
+ *
+ * 当便签设置的提醒时间到达时，此活动会被启动，显示提醒对话框并播放闹钟声音。
+ * 实现了OnClickListener和OnDismissListener接口以处理对话框的交互事件。
+ */
+public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
+ /** 当前提醒的便签ID */
+ private long mNoteId;
+
+ /** 便签内容摘要 */
+ private String mSnippet;
+
+ /** 便签摘要预览的最大长度 */
+ private static final int SNIPPET_PREW_MAX_LEN = 60;
+
+ /** 媒体播放器，用于播放闹钟声音 */
+ MediaPlayer mPlayer;
+
+ /**
+ * 活动创建时的回调方法
+ * 初始化窗口属性、加载便签数据并显示提醒对话框
+ *
+ * @param savedInstanceState 保存的实例状态
+ */
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ // 请求无标题栏窗口
+ requestWindowFeature(Window.FEATURE_NO_TITLE);
+
+ final Window win = getWindow();
+ // 设置在锁屏状态下也能显示
+ win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
+
+ // 如果屏幕未开启，添加相关窗口标志
+ if (!isScreenOn()) {
+ // 保持屏幕开启、点亮屏幕、允许锁屏时显示、设置窗口装饰插入
+ win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
+ | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
+ | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
+ | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
+ }
+
+ // 获取启动此活动的意图
+ Intent intent = getIntent();
+
+ try {
+ // 从URI中提取便签ID
+ mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
+ // 获取便签内容摘要
+ mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
+ // 如果摘要过长，截取前面部分并添加省略号
+ mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
+ SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
+ : mSnippet;
+ } catch (IllegalArgumentException e) {
+ // 处理参数错误异常
+ e.printStackTrace();
+ return;
+ }
+
+ // 初始化媒体播放器
+ mPlayer = new MediaPlayer();
+ // 检查便签是否存在且可见
+ if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
+ // 显示提醒对话框
+ showActionDialog();
+ // 播放闹钟声音
+ playAlarmSound();
+ } else {
+ // 如果便签不存在或不可见，结束活动
+ finish();
+ }
+ }
+
+ /**
+ * 检查屏幕是否点亮
+ *
+ * @return 如果屏幕点亮返回true，否则返回false
+ */
+ private boolean isScreenOn() {
+ // 获取电源管理服务
+ PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
+ // 检查屏幕是否点亮
+ return pm.isScreenOn();
+ }
+
+ /**
+ * 播放系统闹钟铃声
+ * 根据系统设置选择合适的音频流类型
+ */
+ private void playAlarmSound() {
+ // 获取系统默认闹钟铃声URI
+ Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
+
+ // 获取静音模式影响的音频流
+ int silentModeStreams = Settings.System.getInt(getContentResolver(),
+ Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
+
+ // 根据系统设置选择合适的音频流类型
+ if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
+ // 如果闹钟音频流受静音模式影响，使用静音模式流
+ mPlayer.setAudioStreamType(silentModeStreams);
+ } else {
+ // 否则使用标准闹钟音频流
+ mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
+ }
+
+ try {
+ // 设置数据源为闹钟铃声URI
+ mPlayer.setDataSource(this, url);
+ // 准备媒体播放器
+ mPlayer.prepare();
+ // 设置循环播放
+ mPlayer.setLooping(true);
+ // 开始播放
+ mPlayer.start();
+ } catch (IllegalArgumentException e) {
+ // 处理参数错误异常
+ e.printStackTrace();
+ } catch (SecurityException e) {
+ // 处理安全权限异常
+ e.printStackTrace();
+ } catch (IllegalStateException e) {
+ // 处理状态错误异常
+ e.printStackTrace();
+ } catch (IOException e) {
+ // 处理IO异常
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * 显示提醒操作对话框
+ * 展示便签内容摘要并提供操作选项
+ */
+ private void showActionDialog() {
+ // 创建提醒对话框构建器
+ AlertDialog.Builder dialog = new AlertDialog.Builder(this);
+ // 设置对话框标题为应用名称
+ dialog.setTitle(R.string.app_name);
+ // 设置对话框内容为便签摘要
+ dialog.setMessage(mSnippet);
+ // 添加确定按钮
+ dialog.setPositiveButton(R.string.notealert_ok, this);
+ // 如果屏幕已点亮，添加进入便签的按钮
+ if (isScreenOn()) {
+ dialog.setNegativeButton(R.string.notealert_enter, this);
+ }
+ // 显示对话框并设置关闭监听器
+ dialog.show().setOnDismissListener(this);
+ }
+
+ /**
+ * 对话框按钮点击事件处理
+ *
+ * @param dialog 被点击的对话框
+ * @param which 被点击的按钮ID
+ */
+ public void onClick(DialogInterface dialog, int which) {
+ switch (which) {
+ case DialogInterface.BUTTON_NEGATIVE:
+ // 如果点击"进入"按钮，启动便签编辑活动
+ Intent intent = new Intent(this, NoteEditActivity.class);
+ intent.setAction(Intent.ACTION_VIEW);
+ intent.putExtra(Intent.EXTRA_UID, mNoteId);
+ startActivity(intent);
+ break;
+ default:
+ // 其他按钮不做特殊处理，对话框会自动关闭
+ break;
+ }
+ }
+
+ /**
+ * 对话框关闭事件处理
+ *
+ * @param dialog 被关闭的对话框
+ */
+ public void onDismiss(DialogInterface dialog) {
+ // 停止闹钟声音
+ stopAlarmSound();
+ // 结束活动
+ finish();
+ }
+
+ /**
+ * 停止闹钟声音播放
+ * 释放媒体播放器资源
+ */
+ private void stopAlarmSound() {
+ if (mPlayer != null) {
+ // 停止播放
+ mPlayer.stop();
+ // 释放资源
+ mPlayer.release();
+ // 置空播放器引用
+ mPlayer = null;
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java b/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java
new file mode 100644
index 0000000..d3ebb1f
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: AlarmInitReceiver.java
+ * 描述: 便签提醒初始化广播接收器
+ * 作用: 在系统启动或应用启动时，重新初始化所有未触发的便签提醒
+ * 功能:
+ * 1. 监听系统启动广播
+ * 2. 查询数据库中所有未触发的提醒
+ * 3. 为每个未触发的提醒重新设置闹钟
+ */
+package net.micode.notes.ui;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.ContentUris;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+
+/**
+ * 便签提醒初始化广播接收器类
+ *
+ * 负责在系统启动或应用启动时，重新初始化所有未触发的便签提醒。
+ * 通过查询数据库中的提醒时间，为每个未触发的提醒重新设置系统闹钟。
+ * 这确保了即使在设备重启后，便签提醒功能仍然正常工作。
+ */
+public class AlarmInitReceiver extends BroadcastReceiver {
+
+ /**
+ * 数据库查询投影，定义需要获取的列
+ */
+ private static final String [] PROJECTION = new String [] {
+ NoteColumns.ID, // 便签ID
+ NoteColumns.ALERTED_DATE // 提醒时间
+ };
+
+ /** 便签ID列索引 */
+ private static final int COLUMN_ID = 0;
+
+ /** 提醒时间列索引 */
+ private static final int COLUMN_ALERTED_DATE = 1;
+
+ /**
+ * 接收广播时的回调方法
+ * 当系统启动完成时，重新初始化所有未触发的便签提醒
+ *
+ * @param context 上下文环境
+ * @param intent 接收到的广播意图
+ */
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ // 获取当前系统时间
+ long currentDate = System.currentTimeMillis();
+
+ // 查询所有未触发的提醒（提醒时间大于当前时间，且类型为便签）
+ Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+ PROJECTION,
+ NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
+ new String[] { String.valueOf(currentDate) },
+ null);
+
+ if (c != null) {
+ // 如果有未触发的提醒
+ if (c.moveToFirst()) {
+ do {
+ // 获取提醒时间
+ long alertDate = c.getLong(COLUMN_ALERTED_DATE);
+
+ // 创建用于触发AlarmReceiver的Intent
+ Intent sender = new Intent(context, AlarmReceiver.class);
+ // 设置Intent的数据为便签的URI
+ sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
+
+ // 创建PendingIntent，用于延迟触发
+ PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
+
+ // 获取系统闹钟服务
+ AlarmManager alermManager = (AlarmManager) context
+ .getSystemService(Context.ALARM_SERVICE);
+
+ // 设置闹钟，在提醒时间触发，并唤醒设备
+ alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
+ } while (c.moveToNext());
+ }
+ // 关闭游标，释放资源
+ c.close();
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java b/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java
new file mode 100644
index 0000000..d6bc84a
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: AlarmReceiver.java
+ * 描述: 便签提醒闹钟广播接收器
+ * 作用: 接收系统闹钟服务发出的广播，启动提醒界面
+ * 功能:
+ * 1. 接收AlarmManager触发的闹钟广播
+ * 2. 将广播转发到AlarmAlertActivity以显示提醒界面
+ */
+package net.micode.notes.ui;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+/**
+ * 便签提醒闹钟广播接收器类
+ *
+ * 当系统闹钟服务触发便签提醒时，此接收器会接收到广播。
+ * 接收器的主要职责是启动AlarmAlertActivity活动，显示提醒界面。
+ * 此类是便签提醒功能的中间环节，连接系统闹钟服务和提醒界面。
+ */
+public class AlarmReceiver extends BroadcastReceiver {
+ /**
+ * 接收闹钟广播时的回调方法
+ *
+ * @param context 上下文环境
+ * @param intent 接收到的广播意图，包含便签URI数据
+ */
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ // 将意图的目标类设置为AlarmAlertActivity
+ intent.setClass(context, AlarmAlertActivity.class);
+ // 添加新任务标志，确保活动在新的任务栈中启动
+ intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+ // 启动提醒活动
+ context.startActivity(intent);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/DateTimePicker.java b/app/src/main/java/net/micode/notes/ui/DateTimePicker.java
new file mode 100644
index 0000000..02f3345
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/DateTimePicker.java
@@ -0,0 +1,511 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.micode.notes.ui;
+
+import java.text.DateFormatSymbols;
+import java.util.Calendar;
+
+import net.micode.notes.R;
+
+
+import android.content.Context;
+import android.text.format.DateFormat;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.NumberPicker;
+
+public class DateTimePicker extends FrameLayout {
+
+ private static final boolean DEFAULT_ENABLE_STATE = true;
+
+ private static final int HOURS_IN_HALF_DAY = 12;
+ private static final int HOURS_IN_ALL_DAY = 24;
+ private static final int DAYS_IN_ALL_WEEK = 7;
+ private static final int DATE_SPINNER_MIN_VAL = 0;
+ private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
+ private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
+ private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;
+ private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
+ private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;
+ private static final int MINUT_SPINNER_MIN_VAL = 0;
+ private static final int MINUT_SPINNER_MAX_VAL = 59;
+ private static final int AMPM_SPINNER_MIN_VAL = 0;
+ private static final int AMPM_SPINNER_MAX_VAL = 1;
+
+ private final NumberPicker mDateSpinner;
+ private final NumberPicker mHourSpinner;
+ private final NumberPicker mMinuteSpinner;
+ private final NumberPicker mAmPmSpinner;
+ private Calendar mDate;
+
+ private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
+
+ private boolean mIsAm;
+
+ private boolean mIs24HourView;
+
+ private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
+
+ private boolean mInitialising;
+
+ private OnDateTimeChangedListener mOnDateTimeChangedListener;
+
+ private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
+ @Override
+ public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
+ mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
+ updateDateControl();
+ onDateTimeChanged();
+ }
+ };
+
+ private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
+ @Override
+ public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
+ boolean isDateChanged = false;
+ Calendar cal = Calendar.getInstance();
+ if (!mIs24HourView) {
+ if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
+ cal.setTimeInMillis(mDate.getTimeInMillis());
+ cal.add(Calendar.DAY_OF_YEAR, 1);
+ isDateChanged = true;
+ } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
+ cal.setTimeInMillis(mDate.getTimeInMillis());
+ cal.add(Calendar.DAY_OF_YEAR, -1);
+ isDateChanged = true;
+ }
+ if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
+ oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
+ mIsAm = !mIsAm;
+ updateAmPmControl();
+ }
+ } else {
+ if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
+ cal.setTimeInMillis(mDate.getTimeInMillis());
+ cal.add(Calendar.DAY_OF_YEAR, 1);
+ isDateChanged = true;
+ } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
+ cal.setTimeInMillis(mDate.getTimeInMillis());
+ cal.add(Calendar.DAY_OF_YEAR, -1);
+ isDateChanged = true;
+ }
+ }
+ int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
+ mDate.set(Calendar.HOUR_OF_DAY, newHour);
+ onDateTimeChanged();
+ if (isDateChanged) {
+ setCurrentYear(cal.get(Calendar.YEAR));
+ setCurrentMonth(cal.get(Calendar.MONTH));
+ setCurrentDay(cal.get(Calendar.DAY_OF_MONTH));
+ }
+ }
+ };
+
+ private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
+ @Override
+ public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
+ int minValue = mMinuteSpinner.getMinValue();
+ int maxValue = mMinuteSpinner.getMaxValue();
+ int offset = 0;
+ if (oldVal == maxValue && newVal == minValue) {
+ offset += 1;
+ } else if (oldVal == minValue && newVal == maxValue) {
+ offset -= 1;
+ }
+ if (offset != 0) {
+ mDate.add(Calendar.HOUR_OF_DAY, offset);
+ mHourSpinner.setValue(getCurrentHour());
+ updateDateControl();
+ int newHour = getCurrentHourOfDay();
+ if (newHour >= HOURS_IN_HALF_DAY) {
+ mIsAm = false;
+ updateAmPmControl();
+ } else {
+ mIsAm = true;
+ updateAmPmControl();
+ }
+ }
+ mDate.set(Calendar.MINUTE, newVal);
+ onDateTimeChanged();
+ }
+ };
+
+ private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
+ @Override
+ public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
+ mIsAm = !mIsAm;
+ if (mIsAm) {
+ mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
+ } else {
+ mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
+ }
+ updateAmPmControl();
+ onDateTimeChanged();
+ }
+ };
+
+ public interface OnDateTimeChangedListener {
+ void onDateTimeChanged(DateTimePicker view, int year, int month,
+ int dayOfMonth, int hourOfDay, int minute);
+ }
+
+ /**
+ * 使用当前系统时间创建日期时间选择器
+ *
+ * @param context 上下文环境
+ */
+ public DateTimePicker(Context context) {
+ this(context, System.currentTimeMillis());
+ }
+
+ /**
+ * 使用指定时间创建日期时间选择器
+ * 时间格式根据系统设置自动选择12小时制或24小时制
+ *
+ * @param context 上下文环境
+ * @param date 初始时间（毫秒）
+ */
+ public DateTimePicker(Context context, long date) {
+ this(context, date, DateFormat.is24HourFormat(context));
+ }
+
+ /**
+ * 使用指定时间和时间格式创建日期时间选择器
+ *
+ * @param context 上下文环境
+ * @param date 初始时间（毫秒）
+ * @param is24HourView 是否使用24小时制
+ */
+ public DateTimePicker(Context context, long date, boolean is24HourView) {
+ super(context);
+ mDate = Calendar.getInstance();
+ mInitialising = true;
+ mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
+ inflate(context, R.layout.datetime_picker, this);
+
+ // 初始化日期选择器
+ mDateSpinner = (NumberPicker) findViewById(R.id.date);
+ mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
+ mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
+ mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
+
+ // 初始化小时选择器
+ mHourSpinner = (NumberPicker) findViewById(R.id.hour);
+ mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
+
+ // 初始化分钟选择器
+ mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
+ mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
+ mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
+ mMinuteSpinner.setOnLongPressUpdateInterval(100);
+ mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
+
+ // 初始化上午/下午选择器
+ String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
+ mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
+ mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
+ mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
+ mAmPmSpinner.setDisplayedValues(stringsForAmPm);
+ mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
+
+ // 更新控件到初始状态
+ updateDateControl();
+ updateHourControl();
+ updateAmPmControl();
+
+ // 设置时间格式（12小时制或24小时制）
+ set24HourView(is24HourView);
+
+ // 设置当前时间
+ setCurrentDate(date);
+
+ // 设置控件启用状态
+ setEnabled(isEnabled());
+
+ // 完成初始化
+ mInitialising = false;
+ }
+
+ @Override
+ public void setEnabled(boolean enabled) {
+ if (mIsEnabled == enabled) {
+ return;
+ }
+ super.setEnabled(enabled);
+ mDateSpinner.setEnabled(enabled);
+ mMinuteSpinner.setEnabled(enabled);
+ mHourSpinner.setEnabled(enabled);
+ mAmPmSpinner.setEnabled(enabled);
+ mIsEnabled = enabled;
+ }
+
+ @Override
+ public boolean isEnabled() {
+ return mIsEnabled;
+ }
+
+ /**
+ * Get the current date in millis
+ *
+ * @return the current date in millis
+ */
+ public long getCurrentDateInTimeMillis() {
+ return mDate.getTimeInMillis();
+ }
+
+ /**
+ * Set the current date
+ *
+ * @param date The current date in millis
+ */
+ public void setCurrentDate(long date) {
+ Calendar cal = Calendar.getInstance();
+ cal.setTimeInMillis(date);
+ setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
+ cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
+ }
+
+ /**
+ * Set the current date
+ *
+ * @param year The current year
+ * @param month The current month
+ * @param dayOfMonth The current dayOfMonth
+ * @param hourOfDay The current hourOfDay
+ * @param minute The current minute
+ */
+ public void setCurrentDate(int year, int month,
+ int dayOfMonth, int hourOfDay, int minute) {
+ setCurrentYear(year);
+ setCurrentMonth(month);
+ setCurrentDay(dayOfMonth);
+ setCurrentHour(hourOfDay);
+ setCurrentMinute(minute);
+ }
+
+ /**
+ * Get current year
+ *
+ * @return The current year
+ */
+ public int getCurrentYear() {
+ return mDate.get(Calendar.YEAR);
+ }
+
+ /**
+ * Set current year
+ *
+ * @param year The current year
+ */
+ public void setCurrentYear(int year) {
+ if (!mInitialising && year == getCurrentYear()) {
+ return;
+ }
+ mDate.set(Calendar.YEAR, year);
+ updateDateControl();
+ onDateTimeChanged();
+ }
+
+ /**
+ * Get current month in the year
+ *
+ * @return The current month in the year
+ */
+ public int getCurrentMonth() {
+ return mDate.get(Calendar.MONTH);
+ }
+
+ /**
+ * Set current month in the year
+ *
+ * @param month The month in the year
+ */
+ public void setCurrentMonth(int month) {
+ if (!mInitialising && month == getCurrentMonth()) {
+ return;
+ }
+ mDate.set(Calendar.MONTH, month);
+ updateDateControl();
+ onDateTimeChanged();
+ }
+
+ /**
+ * Get current day of the month
+ *
+ * @return The day of the month
+ */
+ public int getCurrentDay() {
+ return mDate.get(Calendar.DAY_OF_MONTH);
+ }
+
+ /**
+ * Set current day of the month
+ *
+ * @param dayOfMonth The day of the month
+ */
+ public void setCurrentDay(int dayOfMonth) {
+ if (!mInitialising && dayOfMonth == getCurrentDay()) {
+ return;
+ }
+ mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
+ updateDateControl();
+ onDateTimeChanged();
+ }
+
+ /**
+ * Get current hour in 24 hour mode, in the range (0~23)
+ * @return The current hour in 24 hour mode
+ */
+ public int getCurrentHourOfDay() {
+ return mDate.get(Calendar.HOUR_OF_DAY);
+ }
+
+ private int getCurrentHour() {
+ if (mIs24HourView){
+ return getCurrentHourOfDay();
+ } else {
+ int hour = getCurrentHourOfDay();
+ if (hour > HOURS_IN_HALF_DAY) {
+ return hour - HOURS_IN_HALF_DAY;
+ } else {
+ return hour == 0 ? HOURS_IN_HALF_DAY : hour;
+ }
+ }
+ }
+
+ /**
+ * Set current hour in 24 hour mode, in the range (0~23)
+ *
+ * @param hourOfDay
+ */
+ public void setCurrentHour(int hourOfDay) {
+ if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
+ return;
+ }
+ mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
+ if (!mIs24HourView) {
+ if (hourOfDay >= HOURS_IN_HALF_DAY) {
+ mIsAm = false;
+ if (hourOfDay > HOURS_IN_HALF_DAY) {
+ hourOfDay -= HOURS_IN_HALF_DAY;
+ }
+ } else {
+ mIsAm = true;
+ if (hourOfDay == 0) {
+ hourOfDay = HOURS_IN_HALF_DAY;
+ }
+ }
+ updateAmPmControl();
+ }
+ mHourSpinner.setValue(hourOfDay);
+ onDateTimeChanged();
+ }
+
+ /**
+ * Get currentMinute
+ *
+ * @return The Current Minute
+ */
+ public int getCurrentMinute() {
+ return mDate.get(Calendar.MINUTE);
+ }
+
+ /**
+ * Set current minute
+ */
+ public void setCurrentMinute(int minute) {
+ if (!mInitialising && minute == getCurrentMinute()) {
+ return;
+ }
+ mMinuteSpinner.setValue(minute);
+ mDate.set(Calendar.MINUTE, minute);
+ onDateTimeChanged();
+ }
+
+ /**
+ * @return true if this is in 24 hour view else false.
+ */
+ public boolean is24HourView () {
+ return mIs24HourView;
+ }
+
+ /**
+ * Set whether in 24 hour or AM/PM mode.
+ *
+ * @param is24HourView True for 24 hour mode. False for AM/PM mode.
+ */
+ public void set24HourView(boolean is24HourView) {
+ if (mIs24HourView == is24HourView) {
+ return;
+ }
+ mIs24HourView = is24HourView;
+ mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
+ int hour = getCurrentHourOfDay();
+ updateHourControl();
+ setCurrentHour(hour);
+ updateAmPmControl();
+ }
+
+ private void updateDateControl() {
+ Calendar cal = Calendar.getInstance();
+ cal.setTimeInMillis(mDate.getTimeInMillis());
+ cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
+ mDateSpinner.setDisplayedValues(null);
+ for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
+ cal.add(Calendar.DAY_OF_YEAR, 1);
+ mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
+ }
+ mDateSpinner.setDisplayedValues(mDateDisplayValues);
+ mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
+ mDateSpinner.invalidate();
+ }
+
+ private void updateAmPmControl() {
+ if (mIs24HourView) {
+ mAmPmSpinner.setVisibility(View.GONE);
+ } else {
+ int index = mIsAm ? Calendar.AM : Calendar.PM;
+ mAmPmSpinner.setValue(index);
+ mAmPmSpinner.setVisibility(View.VISIBLE);
+ }
+ }
+
+ private void updateHourControl() {
+ if (mIs24HourView) {
+ mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
+ mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
+ } else {
+ mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
+ mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
+ }
+ }
+
+ /**
+ * Set the callback that indicates the 'Set' button has been pressed.
+ * @param callback the callback, if null will do nothing
+ */
+ public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
+ mOnDateTimeChangedListener = callback;
+ }
+
+ private void onDateTimeChanged() {
+ if (mOnDateTimeChangedListener != null) {
+ mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
+ getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java b/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java
new file mode 100644
index 0000000..e29d983
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: DateTimePickerDialog.java
+ * 描述: 日期时间选择对话框
+ * 作用: 提供一个对话框界面，让用户可以选择日期和时间
+ * 功能:
+ * 1. 基于AlertDialog，集成DateTimePicker控件
+ * 2. 提供确定和取消按钮
+ * 3. 自动更新对话框标题为当前选择的日期时间
+ * 4. 支持回调接口通知外部日期时间的设置
+ */
+package net.micode.notes.ui;
+
+import java.util.Calendar;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.DateTimePicker;
+import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.text.format.DateFormat;
+import android.text.format.DateUtils;
+
+/**
+ * 日期时间选择对话框类
+ *
+ * 基于AlertDialog，集成DateTimePicker控件，提供一个完整的日期时间选择界面。
+ * 用户可以通过此对话框设置日期和时间，并通过回调接口将选择结果通知给调用者。
+ * 对话框标题会自动更新为当前选择的日期时间的格式化字符串。
+ */
+public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
+
+ /** 存储当前选择的日期时间 */
+ private Calendar mDate = Calendar.getInstance();
+
+ /** 是否使用24小时制显示 */
+ private boolean mIs24HourView;
+
+ /** 日期时间设置监听器 */
+ private OnDateTimeSetListener mOnDateTimeSetListener;
+
+ /** 日期时间选择器控件 */
+ private DateTimePicker mDateTimePicker;
+
+ /**
+ * 日期时间设置监听器接口
+ * 当用户点击对话框的确定按钮时，通过此接口通知调用者
+ */
+ public interface OnDateTimeSetListener {
+ /**
+ * 当日期时间被设置时调用
+ *
+ * @param dialog 触发事件的对话框
+ * @param date 用户选择的日期时间（毫秒）
+ */
+ void OnDateTimeSet(AlertDialog dialog, long date);
+ }
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ * @param date 初始日期时间（毫秒）
+ */
+ public DateTimePickerDialog(Context context, long date) {
+ super(context);
+ // 创建日期时间选择器控件
+ mDateTimePicker = new DateTimePicker(context);
+ // 将选择器设置为对话框的内容视图
+ setView(mDateTimePicker);
+
+ // 设置日期时间变更监听器
+ mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
+ public void onDateTimeChanged(DateTimePicker view, int year, int month,
+ int dayOfMonth, int hourOfDay, int minute) {
+ // 更新日期对象
+ mDate.set(Calendar.YEAR, year);
+ mDate.set(Calendar.MONTH, month);
+ mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
+ mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
+ mDate.set(Calendar.MINUTE, minute);
+ // 更新对话框标题为当前选择的日期时间
+ updateTitle(mDate.getTimeInMillis());
+ }
+ });
+
+ // 设置初始日期时间
+ mDate.setTimeInMillis(date);
+ // 将秒设置为0
+ mDate.set(Calendar.SECOND, 0);
+ // 设置选择器的当前日期
+ mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
+
+ // 设置确定按钮
+ setButton(context.getString(R.string.datetime_dialog_ok), this);
+ // 设置取消按钮（不需要监听器，点击会自动关闭对话框）
+ setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
+
+ // 根据系统设置决定是否使用24小时制
+ set24HourView(DateFormat.is24HourFormat(this.getContext()));
+ // 更新对话框标题
+ updateTitle(mDate.getTimeInMillis());
+ }
+
+ /**
+ * 设置是否使用24小时制显示时间
+ *
+ * @param is24HourView 如果为true，使用24小时制；否则使用12小时制
+ */
+ public void set24HourView(boolean is24HourView) {
+ mIs24HourView = is24HourView;
+ }
+
+ /**
+ * 设置日期时间设置监听器
+ *
+ * @param callBack 监听器回调接口
+ */
+ public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
+ mOnDateTimeSetListener = callBack;
+ }
+
+ /**
+ * 更新对话框标题为格式化的日期时间字符串
+ *
+ * @param date 要显示的日期时间（毫秒）
+ */
+ private void updateTitle(long date) {
+ // 设置日期时间格式化标志
+ int flag =
+ DateUtils.FORMAT_SHOW_YEAR | // 显示年份
+ DateUtils.FORMAT_SHOW_DATE | // 显示日期
+ DateUtils.FORMAT_SHOW_TIME; // 显示时间
+
+ // 根据是否使用24小时制设置相应的格式
+ flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
+
+ // 设置对话框标题为格式化的日期时间字符串
+ setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
+ }
+
+ /**
+ * 确定按钮点击事件处理
+ *
+ * @param arg0 对话框接口
+ * @param arg1 按钮ID
+ */
+ public void onClick(DialogInterface arg0, int arg1) {
+ // 如果设置了监听器，通知日期时间已设置
+ if (mOnDateTimeSetListener != null) {
+ mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
+ }
+ }
+}
\ No newline at end of file
diff --git a/app/src/main/java/net/micode/notes/ui/DropdownMenu.java b/app/src/main/java/net/micode/notes/ui/DropdownMenu.java
new file mode 100644
index 0000000..f09c3f8
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/DropdownMenu.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: DropdownMenu.java
+ * 描述: 下拉菜单组件
+ * 作用: 提供一个基于按钮和弹出菜单的下拉菜单组件
+ * 功能:
+ * 1. 将按钮与弹出菜单关联，点击按钮显示菜单
+ * 2. 支持设置菜单项点击监听器
+ * 3. 支持查找特定菜单项
+ * 4. 支持设置按钮标题
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.PopupMenu;
+import android.widget.PopupMenu.OnMenuItemClickListener;
+
+import net.micode.notes.R;
+
+/**
+ * 下拉菜单组件类
+ *
+ * 这个类封装了一个基于按钮和PopupMenu的下拉菜单组件。
+ * 用户点击按钮时，会显示一个下拉菜单，用户可以从中选择选项。
+ * 组件支持设置菜单项点击监听器，以及查找特定菜单项和设置按钮标题。
+ */
+public class DropdownMenu {
+ /** 触发菜单显示的按钮 */
+ private Button mButton;
+
+ /** 弹出菜单对象 */
+ private PopupMenu mPopupMenu;
+
+ /** 菜单对象，用于管理菜单项 */
+ private Menu mMenu;
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ * @param button 用于触发菜单显示的按钮
+ * @param menuId 菜单资源ID
+ */
+ public DropdownMenu(Context context, Button button, int menuId) {
+ mButton = button;
+ // 设置按钮的背景为下拉图标
+ mButton.setBackgroundResource(R.drawable.dropdown_icon);
+
+ // 创建弹出菜单，并与按钮关联
+ mPopupMenu = new PopupMenu(context, mButton);
+ // 获取菜单对象
+ mMenu = mPopupMenu.getMenu();
+ // 从资源文件中加载菜单项
+ mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
+
+ // 设置按钮点击监听器，点击时显示菜单
+ mButton.setOnClickListener(new OnClickListener() {
+ public void onClick(View v) {
+ // 显示弹出菜单
+ mPopupMenu.show();
+ }
+ });
+ }
+
+ /**
+ * 设置下拉菜单项点击监听器
+ *
+ * @param listener 菜单项点击监听器
+ */
+ public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
+ if (mPopupMenu != null) {
+ mPopupMenu.setOnMenuItemClickListener(listener);
+ }
+ }
+
+ /**
+ * 查找指定ID的菜单项
+ *
+ * @param id 要查找的菜单项ID
+ * @return 找到的菜单项，如果不存在则返回null
+ */
+ public MenuItem findItem(int id) {
+ return mMenu.findItem(id);
+ }
+
+ /**
+ * 设置按钮标题文本
+ *
+ * @param title 要设置的标题文本
+ */
+ public void setTitle(CharSequence title) {
+ mButton.setText(title);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java b/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java
new file mode 100644
index 0000000..0fb6079
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: FoldersListAdapter.java
+ * 描述: 文件夹列表适配器
+ * 作用: 为文件夹列表视图提供数据适配器，处理文件夹数据的显示
+ * 功能:
+ * 1. 将数据库中的文件夹数据适配到列表视图
+ * 2. 自定义文件夹列表项的布局和显示
+ * 3. 处理根文件夹的特殊显示
+ * 4. 提供获取文件夹名称的便捷方法
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CursorAdapter;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+
+/**
+ * 文件夹列表适配器类
+ *
+ * 继承自CursorAdapter，用于将数据库中的文件夹数据适配到ListView中显示。
+ * 处理文件夹列表的显示逻辑，包括根文件夹的特殊显示和自定义列表项布局。
+ */
+public class FoldersListAdapter extends CursorAdapter {
+ /**
+ * 数据库查询投影，定义需要获取的列
+ */
+ public static final String [] PROJECTION = {
+ NoteColumns.ID, // 文件夹ID
+ NoteColumns.SNIPPET // 文件夹名称
+ };
+
+ /** 文件夹ID列索引 */
+ public static final int ID_COLUMN = 0;
+
+ /** 文件夹名称列索引 */
+ public static final int NAME_COLUMN = 1;
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ * @param c 包含文件夹数据的游标
+ */
+ public FoldersListAdapter(Context context, Cursor c) {
+ super(context, c);
+ }
+
+ /**
+ * 创建新的列表项视图
+ * 当ListView需要显示一个新的列表项时调用
+ *
+ * @param context 上下文环境
+ * @param cursor 数据游标
+ * @param parent 父视图
+ * @return 新创建的列表项视图
+ */
+ @Override
+ public View newView(Context context, Cursor cursor, ViewGroup parent) {
+ // 创建并返回一个新的文件夹列表项视图
+ return new FolderListItem(context);
+ }
+
+ /**
+ * 将数据绑定到列表项视图
+ * 当ListView需要显示数据到一个已创建的视图时调用
+ *
+ * @param view 要绑定数据的视图
+ * @param context 上下文环境
+ * @param cursor 包含要绑定数据的游标
+ */
+ @Override
+ public void bindView(View view, Context context, Cursor cursor) {
+ if (view instanceof FolderListItem) {
+ // 获取文件夹名称，对根文件夹做特殊处理
+ String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
+ .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
+
+ // 将文件夹名称绑定到视图
+ ((FolderListItem) view).bind(folderName);
+ }
+ }
+
+ /**
+ * 获取指定位置的文件夹名称
+ *
+ * @param context 上下文环境
+ * @param position 列表中的位置
+ * @return 文件夹名称
+ */
+ public String getFolderName(Context context, int position) {
+ // 获取指定位置的游标
+ Cursor cursor = (Cursor) getItem(position);
+ // 获取文件夹名称，对根文件夹做特殊处理
+ return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
+ .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
+ }
+
+ /**
+ * 文件夹列表项视图类
+ * 自定义的列表项布局，用于显示文件夹名称
+ */
+ private class FolderListItem extends LinearLayout {
+ /** 显示文件夹名称的文本视图 */
+ private TextView mName;
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ */
+ public FolderListItem(Context context) {
+ super(context);
+ // 从布局文件中加载视图
+ inflate(context, R.layout.folder_list_item, this);
+ // 获取文件夹名称文本视图
+ mName = (TextView) findViewById(R.id.tv_folder_name);
+ }
+
+ /**
+ * 绑定文件夹名称到视图
+ *
+ * @param name 文件夹名称
+ */
+ public void bind(String name) {
+ // 设置文件夹名称
+ mName.setText(name);
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java b/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java
new file mode 100644
index 0000000..f069ddc
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java
@@ -0,0 +1,951 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteEditActivity.java
+ * 描述: 便签编辑界面
+ * 作用: 提供便签的创建、编辑、保存和设置功能
+ * 功能:
+ * 1. 便签内容编辑
+ * 2. 便签背景颜色设置
+ * 3. 字体大小设置
+ * 4. 提醒时间设置
+ * 5. 支持普通文本和清单模式切换
+ * 6. 支持便签分享和发送到桌面
+ * 7. 支持便签删除和保存
+ */
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.app.AlarmManager;
+import android.app.AlertDialog;
+import android.app.PendingIntent;
+import android.app.SearchManager;
+import android.appwidget.AppWidgetManager;
+import android.content.ContentUris;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.text.Spannable;
+import android.text.SpannableString;
+import android.text.TextUtils;
+import android.text.format.DateUtils;
+import android.text.style.BackgroundColorSpan;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.WindowManager;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.TextNote;
+import net.micode.notes.model.WorkingNote;
+import net.micode.notes.model.WorkingNote.NoteSettingChangedListener;
+import net.micode.notes.tool.DataUtils;
+import net.micode.notes.tool.ResourceParser;
+import net.micode.notes.tool.ResourceParser.TextAppearanceResources;
+import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener;
+import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
+import net.micode.notes.widget.NoteWidgetProvider_2x;
+import net.micode.notes.widget.NoteWidgetProvider_4x;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 便签编辑活动类
+ *
+ * 这是应用的核心活动之一，负责便签的创建、编辑和保存。
+ * 实现了多个接口以处理各种用户交互和设置变更事件。
+ * 支持两种编辑模式：普通文本模式和清单模式，并提供丰富的便签设置选项。
+ *
+ * 主要功能：
+ * - 便签内容编辑
+ * - 便签背景颜色设置
+ * - 字体大小设置
+ * - 提醒时间设置
+ * - 清单模式（支持勾选项）
+ * - 便签分享
+ * - 发送到桌面快捷方式
+ * - 便签删除
+ */
+public class NoteEditActivity extends Activity implements OnClickListener,
+ NoteSettingChangedListener, OnTextViewChangeListener {
+ /**
+ * 便签头部视图持有者类
+ * 用于存储和访问便签头部视图中的各个控件引用
+ */
+ private class HeadViewHolder {
+ /** 显示便签修改时间的文本视图 */
+ public TextView tvModified;
+
+ /** 显示提醒图标的图像视图 */
+ public ImageView ivAlertIcon;
+
+ /** 显示提醒日期的文本视图 */
+ public TextView tvAlertDate;
+
+ /** 设置背景颜色的按钮 */
+ public ImageView ibSetBgColor;
+ }
+
+ /** 背景颜色选择器按钮ID与颜色值的映射 */
+ private static final Map sBgSelectorBtnsMap = new HashMap();
+ static {
+ sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW);
+ sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED);
+ sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE);
+ sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN);
+ sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
+ }
+
+ /** 背景颜色值与选择指示器ID的映射 */
+ private static final Map sBgSelectorSelectionMap = new HashMap();
+ static {
+ sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select);
+ sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select);
+ sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select);
+ sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select);
+ sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
+ }
+
+ /** 字体大小选择器按钮ID与字体大小值的映射 */
+ private static final Map sFontSizeBtnsMap = new HashMap();
+ static {
+ sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE);
+ sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL);
+ sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM);
+ sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
+ }
+
+ /** 字体大小值与选择指示器ID的映射 */
+ private static final Map sFontSelectorSelectionMap = new HashMap();
+ static {
+ sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select);
+ sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select);
+ sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select);
+ sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
+ }
+
+ /** 日志标签 */
+ private static final String TAG = "NoteEditActivity";
+
+ /** 便签头部视图持有者 */
+ private HeadViewHolder mNoteHeaderHolder;
+
+ /** 便签头部面板视图 */
+ private View mHeadViewPanel;
+
+ /** 便签背景颜色选择器视图 */
+ private View mNoteBgColorSelector;
+
+ /** 字体大小选择器视图 */
+ private View mFontSizeSelector;
+
+ /** 便签编辑器 */
+ private EditText mNoteEditor;
+
+ /** 便签编辑器面板 */
+ private View mNoteEditorPanel;
+
+ /** 当前工作的便签对象 */
+ private WorkingNote mWorkingNote;
+
+ /** 共享首选项对象 */
+ private SharedPreferences mSharedPrefs;
+
+ /** 当前字体大小ID */
+ private int mFontSizeId;
+
+ /** 字体大小首选项键名 */
+ private static final String PREFERENCE_FONT_SIZE = "pref_font_size";
+
+ /** 桌面快捷方式图标标题的最大长度 */
+ private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;
+
+ /** 已勾选项的标记字符 */
+ public static final String TAG_CHECKED = String.valueOf('\u221A');
+
+ /** 未勾选项的标记字符 */
+ public static final String TAG_UNCHECKED = String.valueOf('\u25A1');
+
+ /** 编辑文本列表容器 */
+ private LinearLayout mEditTextList;
+
+ /** 用户搜索查询字符串 */
+ private String mUserQuery;
+
+ /** 用于搜索匹配的正则表达式模式 */
+ private Pattern mPattern;
+
+ /**
+ * 活动创建时的回调方法
+ * 初始化活动状态和资源
+ *
+ * @param savedInstanceState 保存的实例状态
+ */
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ // 设置内容视图为便签编辑布局
+ this.setContentView(R.layout.note_edit);
+
+ // 如果没有保存的状态且初始化活动状态失败，则结束活动
+ if (savedInstanceState == null && !initActivityState(getIntent())) {
+ finish();
+ return;
+ }
+ // 初始化资源和视图
+ initResources();
+ }
+
+ /**
+ * 当活动因内存不足被杀死后恢复时的回调方法
+ * 恢复之前的便签编辑状态
+ *
+ * @param savedInstanceState 保存的实例状态
+ */
+ @Override
+ protected void onRestoreInstanceState(Bundle savedInstanceState) {
+ super.onRestoreInstanceState(savedInstanceState);
+ // 如果有保存的便签ID，尝试恢复编辑状态
+ if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) {
+ // 创建查看便签的意图
+ Intent intent = new Intent(Intent.ACTION_VIEW);
+ // 设置便签ID
+ intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID));
+ // 尝试初始化活动状态，如果失败则结束活动
+ if (!initActivityState(intent)) {
+ finish();
+ return;
+ }
+ Log.d(TAG, "Restoring from killed activity");
+ }
+ }
+
+ /**
+ * 初始化活动状态
+ * 根据意图加载便签数据或创建新便签
+ *
+ * @param intent 启动活动的意图
+ * @return 如果初始化成功返回true，否则返回false
+ */
+ private boolean initActivityState(Intent intent) {
+ /**
+ * 如果用户指定了ACTION_VIEW但没有提供ID，
+ * 则跳转到便签列表活动
+ */
+ mWorkingNote = null;
+ if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
+ // 获取便签ID
+ long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
+ // 初始化用户查询字符串为空
+ mUserQuery = "";
+
+ /**
+ * 从搜索结果启动
+ */
+ if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {
+ // 从搜索数据中获取便签ID
+ noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
+ // 获取用户搜索查询字符串
+ mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);
+ }
+
+ // 检查便签是否存在且可见
+ if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {
+ Intent jump = new Intent(this, NotesListActivity.class);
+ startActivity(jump);
+ showToast(R.string.error_note_not_exist);
+ finish();
+ return false;
+ } else {
+ mWorkingNote = WorkingNote.load(this, noteId);
+ if (mWorkingNote == null) {
+ Log.e(TAG, "load note failed with note id" + noteId);
+ finish();
+ return false;
+ }
+ }
+ getWindow().setSoftInputMode(
+ WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
+ | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
+ } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
+ // New note
+ long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
+ int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
+ AppWidgetManager.INVALID_APPWIDGET_ID);
+ int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,
+ Notes.TYPE_WIDGET_INVALIDE);
+ int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
+ ResourceParser.getDefaultBgId(this));
+
+ // Parse call-record note
+ String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
+ long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
+ if (callDate != 0 && phoneNumber != null) {
+ if (TextUtils.isEmpty(phoneNumber)) {
+ Log.w(TAG, "The call record number is null");
+ }
+ long noteId = 0;
+ if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(),
+ phoneNumber, callDate)) > 0) {
+ mWorkingNote = WorkingNote.load(this, noteId);
+ if (mWorkingNote == null) {
+ Log.e(TAG, "load call note failed with note id" + noteId);
+ finish();
+ return false;
+ }
+ } else {
+ mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
+ widgetType, bgResId);
+ mWorkingNote.convertToCallNote(phoneNumber, callDate);
+ }
+ } else {
+ mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
+ bgResId);
+ }
+
+ getWindow().setSoftInputMode(
+ WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
+ | WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
+ } else {
+ Log.e(TAG, "Intent not specified action, should not support");
+ finish();
+ return false;
+ }
+ mWorkingNote.setOnSettingStatusChangedListener(this);
+ return true;
+ }
+
+ @Override
+ protected void onResume() {
+ super.onResume();
+ initNoteScreen();
+ }
+
+ private void initNoteScreen() {
+ mNoteEditor.setTextAppearance(this, TextAppearanceResources
+ .getTexAppearanceResource(mFontSizeId));
+ if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
+ switchToListMode(mWorkingNote.getContent());
+ } else {
+ mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
+ mNoteEditor.setSelection(mNoteEditor.getText().length());
+ }
+ for (Integer id : sBgSelectorSelectionMap.keySet()) {
+ findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);
+ }
+ mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
+ mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
+
+ mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
+ mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
+ | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
+ | DateUtils.FORMAT_SHOW_YEAR));
+
+ /**
+ * TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker
+ * is not ready
+ */
+ showAlertHeader();
+ }
+
+ private void showAlertHeader() {
+ if (mWorkingNote.hasClockAlert()) {
+ long time = System.currentTimeMillis();
+ if (time > mWorkingNote.getAlertDate()) {
+ mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);
+ } else {
+ mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(
+ mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
+ }
+ mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);
+ mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);
+ } else {
+ mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
+ mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
+ };
+ }
+
+ @Override
+ protected void onNewIntent(Intent intent) {
+ super.onNewIntent(intent);
+ initActivityState(intent);
+ }
+
+ @Override
+ protected void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ /**
+ * For new note without note id, we should firstly save it to
+ * generate a id. If the editing note is not worth saving, there
+ * is no id which is equivalent to create new note
+ */
+ if (!mWorkingNote.existInDatabase()) {
+ saveNote();
+ }
+ outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());
+ Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");
+ }
+
+ @Override
+ public boolean dispatchTouchEvent(MotionEvent ev) {
+ if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
+ && !inRangeOfView(mNoteBgColorSelector, ev)) {
+ mNoteBgColorSelector.setVisibility(View.GONE);
+ return true;
+ }
+
+ if (mFontSizeSelector.getVisibility() == View.VISIBLE
+ && !inRangeOfView(mFontSizeSelector, ev)) {
+ mFontSizeSelector.setVisibility(View.GONE);
+ return true;
+ }
+ return super.dispatchTouchEvent(ev);
+ }
+
+ private boolean inRangeOfView(View view, MotionEvent ev) {
+ int []location = new int[2];
+ view.getLocationOnScreen(location);
+ int x = location[0];
+ int y = location[1];
+ if (ev.getX() < x
+ || ev.getX() > (x + view.getWidth())
+ || ev.getY() < y
+ || ev.getY() > (y + view.getHeight())) {
+ return false;
+ }
+ return true;
+ }
+
+ private void initResources() {
+ mHeadViewPanel = findViewById(R.id.note_title);
+ mNoteHeaderHolder = new HeadViewHolder();
+ mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date);
+ mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon);
+ mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date);
+ mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);
+ mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);
+ mNoteEditor = (EditText) findViewById(R.id.note_edit_view);
+ mNoteEditorPanel = findViewById(R.id.sv_note_edit);
+ mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector);
+ for (int id : sBgSelectorBtnsMap.keySet()) {
+ ImageView iv = (ImageView) findViewById(id);
+ iv.setOnClickListener(this);
+ }
+
+ mFontSizeSelector = findViewById(R.id.font_size_selector);
+ for (int id : sFontSizeBtnsMap.keySet()) {
+ View view = findViewById(id);
+ view.setOnClickListener(this);
+ };
+ mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
+ mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);
+ /**
+ * HACKME: Fix bug of store the resource id in shared preference.
+ * The id may larger than the length of resources, in this case,
+ * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
+ */
+ if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) {
+ mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE;
+ }
+ mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);
+ }
+
+ @Override
+ protected void onPause() {
+ super.onPause();
+ if(saveNote()) {
+ Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
+ }
+ clearSettingState();
+ }
+
+ private void updateWidget() {
+ Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
+ if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
+ intent.setClass(this, NoteWidgetProvider_2x.class);
+ } else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) {
+ intent.setClass(this, NoteWidgetProvider_4x.class);
+ } else {
+ Log.e(TAG, "Unspported widget type");
+ return;
+ }
+
+ intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
+ mWorkingNote.getWidgetId()
+ });
+
+ sendBroadcast(intent);
+ setResult(RESULT_OK, intent);
+ }
+
+ public void onClick(View v) {
+ int id = v.getId();
+ if (id == R.id.btn_set_bg_color) {
+ mNoteBgColorSelector.setVisibility(View.VISIBLE);
+ findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
+ - View.VISIBLE);
+ } else if (sBgSelectorBtnsMap.containsKey(id)) {
+ findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
+ View.GONE);
+ mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id));
+ mNoteBgColorSelector.setVisibility(View.GONE);
+ } else if (sFontSizeBtnsMap.containsKey(id)) {
+ findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE);
+ mFontSizeId = sFontSizeBtnsMap.get(id);
+ mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit();
+ findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
+ if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
+ getWorkingText();
+ switchToListMode(mWorkingNote.getContent());
+ } else {
+ mNoteEditor.setTextAppearance(this,
+ TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
+ }
+ mFontSizeSelector.setVisibility(View.GONE);
+ }
+ }
+
+ @Override
+ public void onBackPressed() {
+ if(clearSettingState()) {
+ return;
+ }
+
+ saveNote();
+ super.onBackPressed();
+ }
+
+ private boolean clearSettingState() {
+ if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) {
+ mNoteBgColorSelector.setVisibility(View.GONE);
+ return true;
+ } else if (mFontSizeSelector.getVisibility() == View.VISIBLE) {
+ mFontSizeSelector.setVisibility(View.GONE);
+ return true;
+ }
+ return false;
+ }
+
+ public void onBackgroundColorChanged() {
+ findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
+ View.VISIBLE);
+ mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
+ mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
+ }
+
+ @Override
+ public boolean onPrepareOptionsMenu(Menu menu) {
+ if (isFinishing()) {
+ return true;
+ }
+ clearSettingState();
+ menu.clear();
+ if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
+ getMenuInflater().inflate(R.menu.call_note_edit, menu);
+ } else {
+ getMenuInflater().inflate(R.menu.note_edit, menu);
+ }
+ if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
+ menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode);
+ } else {
+ menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode);
+ }
+ if (mWorkingNote.hasClockAlert()) {
+ menu.findItem(R.id.menu_alert).setVisible(false);
+ } else {
+ menu.findItem(R.id.menu_delete_remind).setVisible(false);
+ }
+ return true;
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ int itemId = item.getItemId();
+ if (itemId == R.id.menu_new_note) {
+ createNewNote();
+ } else if (itemId == R.id.menu_delete) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(this);
+ builder.setTitle(getString(R.string.alert_title_delete));
+ builder.setIcon(android.R.drawable.ic_dialog_alert);
+ builder.setMessage(getString(R.string.alert_message_delete_note));
+ builder.setPositiveButton(android.R.string.ok,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ deleteCurrentNote();
+ finish();
+ }
+ });
+ builder.setNegativeButton(android.R.string.cancel, null);
+ builder.show();
+ } else if (itemId == R.id.menu_font_size) {
+ mFontSizeSelector.setVisibility(View.VISIBLE);
+ findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
+ } else if (itemId == R.id.menu_list_mode) {
+ mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ?
+ TextNote.MODE_CHECK_LIST : 0);
+ } else if (itemId == R.id.menu_share) {
+ getWorkingText();
+ sendTo(this, mWorkingNote.getContent());
+ } else if (itemId == R.id.menu_send_to_desktop) {
+ sendToDesktop();
+ } else if (itemId == R.id.menu_alert) {
+ setReminder();
+ } else if (itemId == R.id.menu_delete_remind) {
+ mWorkingNote.setAlertDate(0, false);
+ }
+ return true;
+ }
+
+ private void setReminder() {
+ DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
+ d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
+ public void OnDateTimeSet(AlertDialog dialog, long date) {
+ mWorkingNote.setAlertDate(date , true);
+ }
+ });
+ d.show();
+ }
+
+ /**
+ * Share note to apps that support {@link Intent#ACTION_SEND} action
+ * and {@text/plain} type
+ */
+ private void sendTo(Context context, String info) {
+ Intent intent = new Intent(Intent.ACTION_SEND);
+ intent.putExtra(Intent.EXTRA_TEXT, info);
+ intent.setType("text/plain");
+ context.startActivity(intent);
+ }
+
+ private void createNewNote() {
+ // Firstly, save current editing notes
+ saveNote();
+
+ // For safety, start a new NoteEditActivity
+ finish();
+ Intent intent = new Intent(this, NoteEditActivity.class);
+ intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+ intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
+ startActivity(intent);
+ }
+
+ private void deleteCurrentNote() {
+ if (mWorkingNote.existInDatabase()) {
+ HashSet ids = new HashSet();
+ long id = mWorkingNote.getNoteId();
+ if (id != Notes.ID_ROOT_FOLDER) {
+ ids.add(id);
+ } else {
+ Log.d(TAG, "Wrong note id, should not happen");
+ }
+ if (!isSyncMode()) {
+ if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {
+ Log.e(TAG, "Delete Note error");
+ }
+ } else {
+ if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) {
+ Log.e(TAG, "Move notes to trash folder error, should not happens");
+ }
+ }
+ }
+ mWorkingNote.markDeleted(true);
+ }
+
+ private boolean isSyncMode() {
+ return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
+ }
+
+ public void onClockAlertChanged(long date, boolean set) {
+ /**
+ * User could set clock to an unsaved note, so before setting the
+ * alert clock, we should save the note first
+ */
+ if (!mWorkingNote.existInDatabase()) {
+ saveNote();
+ }
+ if (mWorkingNote.getNoteId() > 0) {
+ Intent intent = new Intent(this, AlarmReceiver.class);
+ intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));
+ PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
+ AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));
+ showAlertHeader();
+ if(!set) {
+ alarmManager.cancel(pendingIntent);
+ } else {
+ alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);
+ }
+ } else {
+ /**
+ * There is the condition that user has input nothing (the note is
+ * not worthy saving), we have no note id, remind the user that he
+ * should input something
+ */
+ Log.e(TAG, "Clock alert setting error");
+ showToast(R.string.error_note_empty_for_clock);
+ }
+ }
+
+ public void onWidgetChanged() {
+ updateWidget();
+ }
+
+ public void onEditTextDelete(int index, String text) {
+ int childCount = mEditTextList.getChildCount();
+ if (childCount == 1) {
+ return;
+ }
+
+ for (int i = index + 1; i < childCount; i++) {
+ ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
+ .setIndex(i - 1);
+ }
+
+ mEditTextList.removeViewAt(index);
+ NoteEditText edit = null;
+ if(index == 0) {
+ edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
+ R.id.et_edit_text);
+ } else {
+ edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
+ R.id.et_edit_text);
+ }
+ int length = edit.length();
+ edit.append(text);
+ edit.requestFocus();
+ edit.setSelection(length);
+ }
+
+ public void onEditTextEnter(int index, String text) {
+ /**
+ * Should not happen, check for debug
+ */
+ if(index > mEditTextList.getChildCount()) {
+ Log.e(TAG, "Index out of mEditTextList boundrary, should not happen");
+ }
+
+ View view = getListItem(text, index);
+ mEditTextList.addView(view, index);
+ NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
+ edit.requestFocus();
+ edit.setSelection(0);
+ for (int i = index + 1; i < mEditTextList.getChildCount(); i++) {
+ ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
+ .setIndex(i);
+ }
+ }
+
+ private void switchToListMode(String text) {
+ mEditTextList.removeAllViews();
+ String[] items = text.split("\n");
+ int index = 0;
+ for (String item : items) {
+ if(!TextUtils.isEmpty(item)) {
+ mEditTextList.addView(getListItem(item, index));
+ index++;
+ }
+ }
+ mEditTextList.addView(getListItem("", index));
+ mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus();
+
+ mNoteEditor.setVisibility(View.GONE);
+ mEditTextList.setVisibility(View.VISIBLE);
+ }
+
+ private Spannable getHighlightQueryResult(String fullText, String userQuery) {
+ SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
+ if (!TextUtils.isEmpty(userQuery)) {
+ mPattern = Pattern.compile(userQuery);
+ Matcher m = mPattern.matcher(fullText);
+ int start = 0;
+ while (m.find(start)) {
+ spannable.setSpan(
+ new BackgroundColorSpan(this.getResources().getColor(
+ R.color.user_query_highlight)), m.start(), m.end(),
+ Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
+ start = m.end();
+ }
+ }
+ return spannable;
+ }
+
+ private View getListItem(String item, int index) {
+ View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);
+ final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
+ edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
+ CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));
+ cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+ public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+ if (isChecked) {
+ edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
+ } else {
+ edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
+ }
+ }
+ });
+
+ if (item.startsWith(TAG_CHECKED)) {
+ cb.setChecked(true);
+ edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
+ item = item.substring(TAG_CHECKED.length(), item.length()).trim();
+ } else if (item.startsWith(TAG_UNCHECKED)) {
+ cb.setChecked(false);
+ edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
+ item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();
+ }
+
+ edit.setOnTextViewChangeListener(this);
+ edit.setIndex(index);
+ edit.setText(getHighlightQueryResult(item, mUserQuery));
+ return view;
+ }
+
+ public void onTextChange(int index, boolean hasText) {
+ if (index >= mEditTextList.getChildCount()) {
+ Log.e(TAG, "Wrong index, should not happen");
+ return;
+ }
+ if(hasText) {
+ mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE);
+ } else {
+ mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE);
+ }
+ }
+
+ public void onCheckListModeChanged(int oldMode, int newMode) {
+ if (newMode == TextNote.MODE_CHECK_LIST) {
+ switchToListMode(mNoteEditor.getText().toString());
+ } else {
+ if (!getWorkingText()) {
+ mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ",
+ ""));
+ }
+ mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
+ mEditTextList.setVisibility(View.GONE);
+ mNoteEditor.setVisibility(View.VISIBLE);
+ }
+ }
+
+ private boolean getWorkingText() {
+ boolean hasChecked = false;
+ if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
+ StringBuilder sb = new StringBuilder();
+ for (int i = 0; i < mEditTextList.getChildCount(); i++) {
+ View view = mEditTextList.getChildAt(i);
+ NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
+ if (!TextUtils.isEmpty(edit.getText())) {
+ if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) {
+ sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n");
+ hasChecked = true;
+ } else {
+ sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");
+ }
+ }
+ }
+ mWorkingNote.setWorkingText(sb.toString());
+ } else {
+ mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
+ }
+ return hasChecked;
+ }
+
+ private boolean saveNote() {
+ getWorkingText();
+ boolean saved = mWorkingNote.saveNote();
+ if (saved) {
+ /**
+ * There are two modes from List view to edit view, open one note,
+ * create/edit a node. Opening node requires to the original
+ * position in the list when back from edit view, while creating a
+ * new node requires to the top of the list. This code
+ * {@link #RESULT_OK} is used to identify the create/edit state
+ */
+ setResult(RESULT_OK);
+ }
+ return saved;
+ }
+
+ private void sendToDesktop() {
+ /**
+ * Before send message to home, we should make sure that current
+ * editing note is exists in databases. So, for new note, firstly
+ * save it
+ */
+ if (!mWorkingNote.existInDatabase()) {
+ saveNote();
+ }
+
+ if (mWorkingNote.getNoteId() > 0) {
+ Intent sender = new Intent();
+ Intent shortcutIntent = new Intent(this, NoteEditActivity.class);
+ shortcutIntent.setAction(Intent.ACTION_VIEW);
+ shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId());
+ sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
+ sender.putExtra(Intent.EXTRA_SHORTCUT_NAME,
+ makeShortcutIconTitle(mWorkingNote.getContent()));
+ sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
+ Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));
+ sender.putExtra("duplicate", true);
+ sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
+ showToast(R.string.info_note_enter_desktop);
+ sendBroadcast(sender);
+ } else {
+ /**
+ * There is the condition that user has input nothing (the note is
+ * not worthy saving), we have no note id, remind the user that he
+ * should input something
+ */
+ Log.e(TAG, "Send to desktop error");
+ showToast(R.string.error_note_empty_for_send_to_desktop);
+ }
+ }
+
+ private String makeShortcutIconTitle(String content) {
+ content = content.replace(TAG_CHECKED, "");
+ content = content.replace(TAG_UNCHECKED, "");
+ return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
+ SHORTCUT_ICON_TITLE_MAX_LEN) : content;
+ }
+
+ private void showToast(int resId) {
+ showToast(resId, Toast.LENGTH_SHORT);
+ }
+
+ private void showToast(int resId, int duration) {
+ Toast.makeText(this, resId, duration).show();
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NoteEditText.java b/app/src/main/java/net/micode/notes/ui/NoteEditText.java
new file mode 100644
index 0000000..337b0e1
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NoteEditText.java
@@ -0,0 +1,330 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteEditText.java
+ * 描述: 便签编辑文本框控件
+ * 作用: 提供便签编辑的核心文本输入组件，支持特殊键处理、链接识别和上下文菜单
+ * 功能:
+ * 1. 处理回车键和删除键的特殊行为
+ * 2. 支持文本变化监听和回调
+ * 3. 支持URL链接的识别和处理
+ * 4. 提供自定义的触摸事件处理
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.text.Layout;
+import android.text.Selection;
+import android.text.Spanned;
+import android.text.TextUtils;
+import android.text.style.URLSpan;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.ContextMenu;
+import android.view.KeyEvent;
+import android.view.MenuItem;
+import android.view.MenuItem.OnMenuItemClickListener;
+import android.view.MotionEvent;
+import android.widget.EditText;
+
+import net.micode.notes.R;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 便签编辑文本框类
+ *
+ * 继承自EditText，为便签应用提供自定义的文本编辑功能
+ * 处理特殊按键事件（如回车键、删除键）以支持便签的编辑操作
+ * 实现URL链接的识别和处理，支持点击链接执行相应操作
+ */
+public class NoteEditText extends EditText {
+ /** 日志标签 */
+ private static final String TAG = "NoteEditText";
+
+ /** 当前编辑框在列表中的索引位置 */
+ private int mIndex;
+
+ /** 删除操作前的光标位置，用于判断是否需要合并上一个编辑框 */
+ private int mSelectionStartBeforeDelete;
+
+ /** 电话号码链接前缀 */
+ private static final String SCHEME_TEL = "tel:" ;
+
+ /** 网址链接前缀 */
+ private static final String SCHEME_HTTP = "http:" ;
+
+ /** 邮件链接前缀 */
+ private static final String SCHEME_EMAIL = "mailto:" ;
+
+ /** 链接类型与对应菜单文本资源ID的映射 */
+ private static final Map sSchemaActionResMap = new HashMap();
+ static {
+ sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
+ sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
+ sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
+ }
+
+ /**
+ * 文本视图变化监听器接口
+ * 由NoteEditActivity实现，用于响应编辑框的特殊操作
+ */
+ public interface OnTextViewChangeListener {
+ /**
+ * 当删除键在文本为空且光标在开头位置时触发，用于删除当前编辑框
+ *
+ * @param index 当前编辑框的索引
+ * @param text 当前编辑框的文本内容
+ */
+ void onEditTextDelete(int index, String text);
+
+ /**
+ * 当回车键按下时触发，用于在当前编辑框后添加新的编辑框
+ *
+ * @param index 当前编辑框的索引
+ * @param text 分割后应该放入新编辑框的文本内容
+ */
+ void onEditTextEnter(int index, String text);
+
+ /**
+ * 当文本内容变化时触发，用于控制项目选项的显示或隐藏
+ *
+ * @param index 当前编辑框的索引
+ * @param hasText 是否有文本内容
+ */
+ void onTextChange(int index, boolean hasText);
+ }
+
+ /** 文本视图变化监听器 */
+ private OnTextViewChangeListener mOnTextViewChangeListener;
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ */
+ public NoteEditText(Context context) {
+ super(context, null);
+ mIndex = 0;
+ }
+
+ /**
+ * 设置当前编辑框在列表中的索引位置
+ *
+ * @param index 索引位置
+ */
+ public void setIndex(int index) {
+ mIndex = index;
+ }
+
+ /**
+ * 设置文本视图变化监听器
+ *
+ * @param listener 监听器实例
+ */
+ public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
+ mOnTextViewChangeListener = listener;
+ }
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ * @param attrs 属性集
+ */
+ public NoteEditText(Context context, AttributeSet attrs) {
+ super(context, attrs, android.R.attr.editTextStyle);
+ }
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ * @param attrs 属性集
+ * @param defStyle 默认样式
+ */
+ public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ // TODO Auto-generated constructor stub
+ }
+
+ /**
+ * 处理触摸事件
+ * 实现精确的光标定位，使用户可以点击文本的任意位置设置光标
+ *
+ * @param event 触摸事件
+ * @return 是否已处理事件
+ */
+ @Override
+ public boolean onTouchEvent(MotionEvent event) {
+ switch (event.getAction()) {
+ case MotionEvent.ACTION_DOWN:
+ // 计算触摸点在文本中的精确位置，并设置光标
+ int x = (int) event.getX();
+ int y = (int) event.getY();
+ x -= getTotalPaddingLeft();
+ y -= getTotalPaddingTop();
+ x += getScrollX();
+ y += getScrollY();
+
+ Layout layout = getLayout();
+ int line = layout.getLineForVertical(y);
+ int off = layout.getOffsetForHorizontal(line, x);
+ Selection.setSelection(getText(), off);
+ break;
+ }
+
+ return super.onTouchEvent(event);
+ }
+
+ /**
+ * 处理按键按下事件
+ * 特殊处理回车键和删除键
+ *
+ * @param keyCode 按键代码
+ * @param event 按键事件
+ * @return 是否已处理事件
+ */
+ @Override
+ public boolean onKeyDown(int keyCode, KeyEvent event) {
+ switch (keyCode) {
+ case KeyEvent.KEYCODE_ENTER:
+ // 如果设置了监听器，回车键由Activity处理
+ if (mOnTextViewChangeListener != null) {
+ return false;
+ }
+ break;
+ case KeyEvent.KEYCODE_DEL:
+ // 记录删除前的光标位置，用于判断是否需要与上一个编辑框合并
+ mSelectionStartBeforeDelete = getSelectionStart();
+ break;
+ default:
+ break;
+ }
+ return super.onKeyDown(keyCode, event);
+ }
+
+ /**
+ * 处理按键抬起事件
+ * 实现删除键在文本开头时删除当前编辑框
+ * 实现回车键分割文本并创建新编辑框
+ *
+ * @param keyCode 按键代码
+ * @param event 按键事件
+ * @return 是否已处理事件
+ */
+ @Override
+ public boolean onKeyUp(int keyCode, KeyEvent event) {
+ switch(keyCode) {
+ case KeyEvent.KEYCODE_DEL:
+ if (mOnTextViewChangeListener != null) {
+ // 当光标在文本开头且不是第一个编辑框时，删除当前编辑框
+ if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
+ mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
+ return true;
+ }
+ } else {
+ Log.d(TAG, "OnTextViewChangeListener was not seted");
+ }
+ break;
+ case KeyEvent.KEYCODE_ENTER:
+ if (mOnTextViewChangeListener != null) {
+ // 获取光标位置，分割文本
+ int selectionStart = getSelectionStart();
+ String text = getText().subSequence(selectionStart, length()).toString();
+ setText(getText().subSequence(0, selectionStart));
+ // 通知监听器创建新的编辑框
+ mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
+ } else {
+ Log.d(TAG, "OnTextViewChangeListener was not seted");
+ }
+ break;
+ default:
+ break;
+ }
+ return super.onKeyUp(keyCode, event);
+ }
+
+ /**
+ * 处理焦点变化事件
+ * 当焦点变化时，通知监听器文本内容的状态
+ *
+ * @param focused 是否获得焦点
+ * @param direction 焦点方向
+ * @param previouslyFocusedRect 先前获得焦点的区域
+ */
+ @Override
+ protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
+ if (mOnTextViewChangeListener != null) {
+ // 当失去焦点且文本为空时，通知监听器
+ if (!focused && TextUtils.isEmpty(getText())) {
+ mOnTextViewChangeListener.onTextChange(mIndex, false);
+ } else {
+ mOnTextViewChangeListener.onTextChange(mIndex, true);
+ }
+ }
+ super.onFocusChanged(focused, direction, previouslyFocusedRect);
+ }
+
+ /**
+ * 创建上下文菜单
+ * 为识别到的URL链接提供操作选项
+ *
+ * @param menu 上下文菜单
+ */
+ @Override
+ protected void onCreateContextMenu(ContextMenu menu) {
+ // 检查文本中是否包含URL链接
+ if (getText() instanceof Spanned) {
+ int selStart = getSelectionStart();
+ int selEnd = getSelectionEnd();
+
+ int min = Math.min(selStart, selEnd);
+ int max = Math.max(selStart, selEnd);
+
+ // 获取选中区域内的所有URL链接
+ final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
+ if (urls.length == 1) {
+ // 根据链接类型确定菜单文本
+ int defaultResId = 0;
+ for(String schema: sSchemaActionResMap.keySet()) {
+ if(urls[0].getURL().indexOf(schema) >= 0) {
+ defaultResId = sSchemaActionResMap.get(schema);
+ break;
+ }
+ }
+
+ if (defaultResId == 0) {
+ defaultResId = R.string.note_link_other;
+ }
+
+ // 添加菜单项并设置点击监听器
+ menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
+ new OnMenuItemClickListener() {
+ public boolean onMenuItemClick(MenuItem item) {
+ // 执行链接点击操作
+ urls[0].onClick(NoteEditText.this);
+ return true;
+ }
+ });
+ }
+ }
+ super.onCreateContextMenu(menu);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NoteItemData.java b/app/src/main/java/net/micode/notes/ui/NoteItemData.java
new file mode 100644
index 0000000..a0db052
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NoteItemData.java
@@ -0,0 +1,408 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteItemData.java
+ * 描述: 便签列表项数据模型类
+ * 作用: 封装便签列表中单个便签或文件夹的数据信息，提供数据访问接口
+ * 功能:
+ * 1. 从数据库游标中提取便签数据
+ * 2. 提供便签属性的访问方法
+ * 3. 判断便签在列表中的位置状态（首项、末项等）
+ * 4. 处理通话记录便签的特殊逻辑
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.text.TextUtils;
+
+import net.micode.notes.data.Contact;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.tool.DataUtils;
+
+/**
+ * 便签列表项数据类
+ *
+ * 封装便签列表中单个便签或文件夹的数据信息
+ * 从数据库游标中提取数据，并提供各种属性的访问方法
+ * 处理便签在列表中的位置关系，支持不同类型便签的显示逻辑
+ */
+public class NoteItemData {
+ /** 数据库查询投影，定义需要获取的列 */
+ static final String [] PROJECTION = new String [] {
+ NoteColumns.ID,
+ NoteColumns.ALERTED_DATE,
+ NoteColumns.BG_COLOR_ID,
+ NoteColumns.CREATED_DATE,
+ NoteColumns.HAS_ATTACHMENT,
+ NoteColumns.MODIFIED_DATE,
+ NoteColumns.NOTES_COUNT,
+ NoteColumns.PARENT_ID,
+ NoteColumns.SNIPPET,
+ NoteColumns.TYPE,
+ NoteColumns.WIDGET_ID,
+ NoteColumns.WIDGET_TYPE,
+ };
+
+ /** 投影中ID列的索引 */
+ private static final int ID_COLUMN = 0;
+ /** 投影中提醒日期列的索引 */
+ private static final int ALERTED_DATE_COLUMN = 1;
+ /** 投影中背景颜色ID列的索引 */
+ private static final int BG_COLOR_ID_COLUMN = 2;
+ /** 投影中创建日期列的索引 */
+ private static final int CREATED_DATE_COLUMN = 3;
+ /** 投影中是否有附件列的索引 */
+ private static final int HAS_ATTACHMENT_COLUMN = 4;
+ /** 投影中修改日期列的索引 */
+ private static final int MODIFIED_DATE_COLUMN = 5;
+ /** 投影中便签数量列的索引 */
+ private static final int NOTES_COUNT_COLUMN = 6;
+ /** 投影中父ID列的索引 */
+ private static final int PARENT_ID_COLUMN = 7;
+ /** 投影中摘要列的索引 */
+ private static final int SNIPPET_COLUMN = 8;
+ /** 投影中类型列的索引 */
+ private static final int TYPE_COLUMN = 9;
+ /** 投影中小部件ID列的索引 */
+ private static final int WIDGET_ID_COLUMN = 10;
+ /** 投影中小部件类型列的索引 */
+ private static final int WIDGET_TYPE_COLUMN = 11;
+
+ /** 便签ID */
+ private long mId;
+ /** 提醒日期 */
+ private long mAlertDate;
+ /** 背景颜色ID */
+ private int mBgColorId;
+ /** 创建日期 */
+ private long mCreatedDate;
+ /** 是否有附件 */
+ private boolean mHasAttachment;
+ /** 修改日期 */
+ private long mModifiedDate;
+ /** 便签数量（对于文件夹） */
+ private int mNotesCount;
+ /** 父ID（所属文件夹ID） */
+ private long mParentId;
+ /** 便签摘要（显示内容） */
+ private String mSnippet;
+ /** 便签类型 */
+ private int mType;
+ /** 小部件ID */
+ private int mWidgetId;
+ /** 小部件类型 */
+ private int mWidgetType;
+ /** 联系人姓名（通话记录便签） */
+ private String mName;
+ /** 电话号码（通话记录便签） */
+ private String mPhoneNumber;
+
+ /** 是否为列表中的最后一项 */
+ private boolean mIsLastItem;
+ /** 是否为列表中的第一项 */
+ private boolean mIsFirstItem;
+ /** 是否为列表中的唯一一项 */
+ private boolean mIsOnlyOneItem;
+ /** 是否为文件夹后的单个便签 */
+ private boolean mIsOneNoteFollowingFolder;
+ /** 是否为文件夹后的多个便签中的一个 */
+ private boolean mIsMultiNotesFollowingFolder;
+
+ /**
+ * 构造函数，从游标中提取便签数据
+ *
+ * @param context 上下文环境
+ * @param cursor 包含便签数据的游标
+ */
+ public NoteItemData(Context context, Cursor cursor) {
+ // 从游标中提取基本属性
+ mId = cursor.getLong(ID_COLUMN);
+ mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
+ mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
+ mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
+ mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;
+ mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN);
+ mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN);
+ mParentId = cursor.getLong(PARENT_ID_COLUMN);
+ mSnippet = cursor.getString(SNIPPET_COLUMN);
+ // 清理便签摘要中的特殊标记
+ mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(
+ NoteEditActivity.TAG_UNCHECKED, "");
+ mType = cursor.getInt(TYPE_COLUMN);
+ mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
+ mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
+
+ // 处理通话记录便签的特殊逻辑
+ mPhoneNumber = "";
+ if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
+ // 获取通话记录关联的电话号码
+ mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
+ if (!TextUtils.isEmpty(mPhoneNumber)) {
+ // 尝试获取联系人姓名，如果没有则使用电话号码作为名称
+ mName = Contact.getContact(context, mPhoneNumber);
+ if (mName == null) {
+ mName = mPhoneNumber;
+ }
+ }
+ }
+
+ if (mName == null) {
+ mName = "";
+ }
+ // 检查便签在列表中的位置状态
+ checkPostion(cursor);
+ }
+
+ /**
+ * 检查便签在列表中的位置状态
+ * 确定便签是否为首项、末项、单项等
+ *
+ * @param cursor 包含便签数据的游标
+ */
+ private void checkPostion(Cursor cursor) {
+ // 检查是否为最后一项、第一项或唯一一项
+ mIsLastItem = cursor.isLast() ? true : false;
+ mIsFirstItem = cursor.isFirst() ? true : false;
+ mIsOnlyOneItem = (cursor.getCount() == 1);
+ mIsMultiNotesFollowingFolder = false;
+ mIsOneNoteFollowingFolder = false;
+
+ // 检查是否为文件夹后的便签
+ if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {
+ int position = cursor.getPosition();
+ if (cursor.moveToPrevious()) {
+ // 检查前一项是否为文件夹
+ if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
+ || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
+ if (cursor.getCount() > (position + 1)) {
+ // 文件夹后有多个便签
+ mIsMultiNotesFollowingFolder = true;
+ } else {
+ // 文件夹后只有一个便签
+ mIsOneNoteFollowingFolder = true;
+ }
+ }
+ // 恢复游标位置
+ if (!cursor.moveToNext()) {
+ throw new IllegalStateException("cursor move to previous but can't move back");
+ }
+ }
+ }
+ }
+
+ /**
+ * 检查是否为文件夹后的单个便签
+ *
+ * @return 如果是文件夹后的单个便签则返回true，否则返回false
+ */
+ public boolean isOneFollowingFolder() {
+ return mIsOneNoteFollowingFolder;
+ }
+
+ /**
+ * 检查是否为文件夹后的多个便签中的一个
+ *
+ * @return 如果是文件夹后的多个便签中的一个则返回true，否则返回false
+ */
+ public boolean isMultiFollowingFolder() {
+ return mIsMultiNotesFollowingFolder;
+ }
+
+ /**
+ * 检查是否为列表中的最后一项
+ *
+ * @return 如果是最后一项则返回true，否则返回false
+ */
+ public boolean isLast() {
+ return mIsLastItem;
+ }
+
+ /**
+ * 获取通话记录便签的联系人姓名
+ *
+ * @return 联系人姓名或电话号码
+ */
+ public String getCallName() {
+ return mName;
+ }
+
+ /**
+ * 检查是否为列表中的第一项
+ *
+ * @return 如果是第一项则返回true，否则返回false
+ */
+ public boolean isFirst() {
+ return mIsFirstItem;
+ }
+
+ /**
+ * 检查是否为列表中的唯一一项
+ *
+ * @return 如果是唯一一项则返回true，否则返回false
+ */
+ public boolean isSingle() {
+ return mIsOnlyOneItem;
+ }
+
+ /**
+ * 获取便签ID
+ *
+ * @return 便签ID
+ */
+ public long getId() {
+ return mId;
+ }
+
+ /**
+ * 获取提醒日期
+ *
+ * @return 提醒日期的时间戳
+ */
+ public long getAlertDate() {
+ return mAlertDate;
+ }
+
+ /**
+ * 获取创建日期
+ *
+ * @return 创建日期的时间戳
+ */
+ public long getCreatedDate() {
+ return mCreatedDate;
+ }
+
+ /**
+ * 检查是否有附件
+ *
+ * @return 如果有附件则返回true，否则返回false
+ */
+ public boolean hasAttachment() {
+ return mHasAttachment;
+ }
+
+ /**
+ * 获取修改日期
+ *
+ * @return 修改日期的时间戳
+ */
+ public long getModifiedDate() {
+ return mModifiedDate;
+ }
+
+ /**
+ * 获取背景颜色ID
+ *
+ * @return 背景颜色ID
+ */
+ public int getBgColorId() {
+ return mBgColorId;
+ }
+
+ /**
+ * 获取父ID（所属文件夹ID）
+ *
+ * @return 父ID
+ */
+ public long getParentId() {
+ return mParentId;
+ }
+
+ /**
+ * 获取便签数量（对于文件夹）
+ *
+ * @return 便签数量
+ */
+ public int getNotesCount() {
+ return mNotesCount;
+ }
+
+ /**
+ * 获取文件夹ID
+ * 与getParentId()功能相同，提供另一个命名接口
+ *
+ * @return 文件夹ID
+ */
+ public long getFolderId () {
+ return mParentId;
+ }
+
+ /**
+ * 获取便签类型
+ *
+ * @return 便签类型（便签、文件夹或系统文件夹）
+ */
+ public int getType() {
+ return mType;
+ }
+
+ /**
+ * 获取小部件类型
+ *
+ * @return 小部件类型
+ */
+ public int getWidgetType() {
+ return mWidgetType;
+ }
+
+ /**
+ * 获取小部件ID
+ *
+ * @return 小部件ID
+ */
+ public int getWidgetId() {
+ return mWidgetId;
+ }
+
+ /**
+ * 获取便签摘要（显示内容）
+ *
+ * @return 便签摘要文本
+ */
+ public String getSnippet() {
+ return mSnippet;
+ }
+
+ /**
+ * 检查是否设置了提醒
+ *
+ * @return 如果设置了提醒则返回true，否则返回false
+ */
+ public boolean hasAlert() {
+ return (mAlertDate > 0);
+ }
+
+ /**
+ * 检查是否为通话记录便签
+ *
+ * @return 如果是通话记录便签则返回true，否则返回false
+ */
+ public boolean isCallRecord() {
+ return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
+ }
+
+ /**
+ * 从游标中获取便签类型的静态方法
+ *
+ * @param cursor 包含便签数据的游标
+ * @return 便签类型
+ */
+ public static int getNoteType(Cursor cursor) {
+ return cursor.getInt(TYPE_COLUMN);
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
new file mode 100644
index 0000000..d99c029
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
@@ -0,0 +1,1048 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesListActivity.java
+ * 描述: 便签应用的主界面活动
+ * 作用: 显示便签和文件夹列表，提供便签的创建、编辑、删除等操作入口
+ * 功能:
+ * 1. 显示便签和文件夹列表
+ * 2. 提供便签的创建、编辑、删除等操作
+ * 3. 支持便签的多选操作和批量处理
+ * 4. 提供文件夹的创建、编辑、删除等管理功能
+ * 5. 支持便签的搜索和导出
+ * 6. 支持Google账户同步设置入口
+ */
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.appwidget.AppWidgetManager;
+import android.content.AsyncQueryHandler;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.text.Editable;
+import android.text.TextUtils;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.ActionMode;
+import android.view.ContextMenu;
+import android.view.ContextMenu.ContextMenuInfo;
+import android.view.Display;
+import android.view.HapticFeedbackConstants;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.MenuItem.OnMenuItemClickListener;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.View.OnCreateContextMenuListener;
+import android.view.View.OnTouchListener;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemClickListener;
+import android.widget.AdapterView.OnItemLongClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ListView;
+import android.widget.PopupMenu;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.remote.GTaskSyncService;
+import net.micode.notes.model.WorkingNote;
+import net.micode.notes.tool.BackupUtils;
+import net.micode.notes.tool.DataUtils;
+import net.micode.notes.tool.ResourceParser;
+import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
+import net.micode.notes.widget.NoteWidgetProvider_2x;
+import net.micode.notes.widget.NoteWidgetProvider_4x;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.HashSet;
+
+/**
+ * 便签列表活动类
+ *
+ * 应用的主界面活动，显示便签和文件夹列表，提供各种便签操作功能
+ * 实现了点击监听器和长按监听器，支持便签的多选操作
+ * 管理便签的文件夹结构，支持在不同文件夹间导航
+ */
+public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
+ /** 便签列表查询标记 */
+ private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
+
+ /** 文件夹列表查询标记 */
+ private static final int FOLDER_LIST_QUERY_TOKEN = 1;
+
+ /** 文件夹删除菜单项ID */
+ private static final int MENU_FOLDER_DELETE = 0;
+
+ /** 文件夹查看菜单项ID */
+ private static final int MENU_FOLDER_VIEW = 1;
+
+ /** 文件夹重命名菜单项ID */
+ private static final int MENU_FOLDER_CHANGE_NAME = 2;
+
+ /** 首次使用应用时添加介绍便签的首选项键 */
+ private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";
+
+ /**
+ * 列表编辑状态枚举
+ * 定义当前列表显示的内容类型
+ */
+ private enum ListEditState {
+ /** 便签列表状态 */
+ NOTE_LIST,
+ /** 子文件夹状态 */
+ SUB_FOLDER,
+ /** 通话记录文件夹状态 */
+ CALL_RECORD_FOLDER
+ };
+
+ /** 当前列表编辑状态 */
+ private ListEditState mState;
+
+ /** 后台查询处理器 */
+ private BackgroundQueryHandler mBackgroundQueryHandler;
+
+ /** 便签列表适配器 */
+ private NotesListAdapter mNotesListAdapter;
+
+ /** 便签列表视图 */
+ private ListView mNotesListView;
+
+ /** 添加新便签按钮 */
+ private Button mAddNewNote;
+
+ /** 是否分发触摸事件的标志 */
+ private boolean mDispatch;
+
+ /** 触摸事件原始Y坐标 */
+ private int mOriginY;
+
+ /** 触摸事件分发Y坐标 */
+ private int mDispatchY;
+
+ /** 标题栏文本视图 */
+ private TextView mTitleBar;
+
+ /** 当前文件夹ID */
+ private long mCurrentFolderId;
+
+ /** 内容解析器 */
+ private ContentResolver mContentResolver;
+
+ /** 多选模式回调 */
+ private ModeCallback mModeCallBack;
+
+ /** 日志标签 */
+ private static final String TAG = "NotesListActivity";
+
+ /** 便签列表视图滚动速率 */
+ public static final int NOTES_LISTVIEW_SCROLL_RATE = 30;
+
+ /** 当前焦点便签数据项 */
+ private NoteItemData mFocusNoteDataItem;
+
+ /** 普通便签查询条件 */
+ private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?";
+
+ /** 根文件夹查询条件 */
+ private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>"
+ + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR ("
+ + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND "
+ + NoteColumns.NOTES_COUNT + ">0)";
+
+ /** 打开便签请求码 */
+ private final static int REQUEST_CODE_OPEN_NODE = 102;
+
+ /** 新建便签请求码 */
+ private final static int REQUEST_CODE_NEW_NODE = 103;
+
+ /**
+ * 活动创建时的初始化
+ *
+ * @param savedInstanceState 保存的实例状态
+ */
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.note_list);
+ initResources();
+
+ /**
+ * 首次使用应用时添加介绍便签
+ */
+ setAppInfoFromRawRes();
+ }
+
+ /**
+ * 处理活动结果
+ *
+ * @param requestCode 请求码
+ * @param resultCode 结果码
+ * @param data 返回的数据
+ */
+ @Override
+ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+ if (resultCode == RESULT_OK
+ && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {
+ // 便签编辑成功后刷新列表
+ mNotesListAdapter.changeCursor(null);
+ } else {
+ super.onActivityResult(requestCode, resultCode, data);
+ }
+ }
+
+ /**
+ * 从原始资源文件中设置应用介绍信息
+ * 首次使用应用时创建一个介绍便签
+ */
+ private void setAppInfoFromRawRes() {
+ SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+ if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
+ // 首次使用应用，需要添加介绍便签
+ StringBuilder sb = new StringBuilder();
+ InputStream in = null;
+ try {
+ // 读取介绍文件内容
+ in = getResources().openRawResource(R.raw.introduction);
+ if (in != null) {
+ InputStreamReader isr = new InputStreamReader(in);
+ BufferedReader br = new BufferedReader(isr);
+ char [] buf = new char[1024];
+ int len = 0;
+ while ((len = br.read(buf)) > 0) {
+ sb.append(buf, 0, len);
+ }
+ } else {
+ Log.e(TAG, "Read introduction file error");
+ return;
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ return;
+ } finally {
+ if(in != null) {
+ try {
+ in.close();
+ } catch (IOException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ }
+ }
+
+ // 创建介绍便签并保存
+ WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,
+ AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE,
+ ResourceParser.RED);
+ note.setWorkingText(sb.toString());
+ if (note.saveNote()) {
+ // 保存成功后，更新首选项标记，下次不再添加介绍
+ sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
+ } else {
+ Log.e(TAG, "Save introduction note error");
+ return;
+ }
+ }
+ }
+
+ /**
+ * 活动启动时的处理
+ * 开始异步查询便签列表
+ */
+ @Override
+ protected void onStart() {
+ super.onStart();
+ startAsyncNotesListQuery();
+ }
+
+ /**
+ * 初始化资源
+ * 设置视图组件和事件监听器
+ */
+ private void initResources() {
+ mContentResolver = this.getContentResolver();
+ mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());
+ mCurrentFolderId = Notes.ID_ROOT_FOLDER;
+
+ // 初始化列表视图
+ mNotesListView = (ListView) findViewById(R.id.notes_list);
+ mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null),
+ null, false);
+ mNotesListView.setOnItemClickListener(new OnListItemClickListener());
+ mNotesListView.setOnItemLongClickListener(this);
+
+ // 设置列表适配器
+ mNotesListAdapter = new NotesListAdapter(this);
+ mNotesListView.setAdapter(mNotesListAdapter);
+
+ // 初始化添加新便签按钮
+ mAddNewNote = (Button) findViewById(R.id.btn_new_note);
+ mAddNewNote.setOnClickListener(this);
+ mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
+
+ // 初始化其他变量
+ mDispatch = false;
+ mDispatchY = 0;
+ mOriginY = 0;
+ mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
+ mState = ListEditState.NOTE_LIST;
+ mModeCallBack = new ModeCallback();
+ }
+
+ /**
+ * 多选模式回调类
+ *
+ * 处理便签列表的多选模式操作，包括菜单创建和项目选择
+ * 实现ActionMode的回调接口和菜单项点击监听器
+ */
+ private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
+ /** 下拉菜单 */
+ private DropdownMenu mDropDownMenu;
+
+ /** 操作模式 */
+ private ActionMode mActionMode;
+
+ /** 移动菜单项 */
+ private MenuItem mMoveMenu;
+
+ /**
+ * 创建操作模式时调用
+ * 初始化菜单项和操作模式
+ *
+ * @param mode 操作模式
+ * @param menu 菜单
+ * @return 是否成功创建
+ */
+ public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+ // 加载菜单资源
+ getMenuInflater().inflate(R.menu.note_list_options, menu);
+ menu.findItem(R.id.delete).setOnMenuItemClickListener(this);
+ mMoveMenu = menu.findItem(R.id.move);
+
+ // 根据当前文件夹决定是否显示移动菜单
+ if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER
+ || DataUtils.getUserFolderCount(mContentResolver) == 0) {
+ // 通话记录文件夹或没有用户文件夹时不显示移动菜单
+ mMoveMenu.setVisible(false);
+ } else {
+ mMoveMenu.setVisible(true);
+ mMoveMenu.setOnMenuItemClickListener(this);
+ }
+ mActionMode = mode;
+ mNotesListAdapter.setChoiceMode(true);
+ mNotesListView.setLongClickable(false);
+ mAddNewNote.setVisibility(View.GONE);
+
+ View customView = LayoutInflater.from(NotesListActivity.this).inflate(
+ R.layout.note_list_dropdown_menu, null);
+ mode.setCustomView(customView);
+ mDropDownMenu = new DropdownMenu(NotesListActivity.this,
+ (Button) customView.findViewById(R.id.selection_menu),
+ R.menu.note_list_dropdown);
+ mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
+ public boolean onMenuItemClick(MenuItem item) {
+ mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
+ updateMenu();
+ return true;
+ }
+
+ });
+ return true;
+ }
+
+ private void updateMenu() {
+ int selectedCount = mNotesListAdapter.getSelectedCount();
+ // Update dropdown menu
+ String format = getResources().getString(R.string.menu_select_title, selectedCount);
+ mDropDownMenu.setTitle(format);
+ MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);
+ if (item != null) {
+ if (mNotesListAdapter.isAllSelected()) {
+ item.setChecked(true);
+ item.setTitle(R.string.menu_deselect_all);
+ } else {
+ item.setChecked(false);
+ item.setTitle(R.string.menu_select_all);
+ }
+ }
+ }
+
+ public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+ // TODO Auto-generated method stub
+ return false;
+ }
+
+ public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+ // TODO Auto-generated method stub
+ return false;
+ }
+
+ public void onDestroyActionMode(ActionMode mode) {
+ mNotesListAdapter.setChoiceMode(false);
+ mNotesListView.setLongClickable(true);
+ mAddNewNote.setVisibility(View.VISIBLE);
+ }
+
+ public void finishActionMode() {
+ mActionMode.finish();
+ }
+
+ public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
+ boolean checked) {
+ mNotesListAdapter.setCheckedItem(position, checked);
+ updateMenu();
+ }
+
+ public boolean onMenuItemClick(MenuItem item) {
+ if (mNotesListAdapter.getSelectedCount() == 0) {
+ Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none),
+ Toast.LENGTH_SHORT).show();
+ return true;
+ }
+
+ int itemId = item.getItemId();
+ if (itemId == R.id.delete) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
+ builder.setTitle(getString(R.string.alert_title_delete));
+ builder.setIcon(android.R.drawable.ic_dialog_alert);
+ builder.setMessage(getString(R.string.alert_message_delete_notes,
+ mNotesListAdapter.getSelectedCount()));
+ builder.setPositiveButton(android.R.string.ok,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog,
+ int which) {
+ batchDelete();
+ }
+ });
+ builder.setNegativeButton(android.R.string.cancel, null);
+ builder.show();
+ } else if (itemId == R.id.move) {
+ startQueryDestinationFolders();
+ } else {
+ return false;
+ }
+ return true;
+ }
+ }
+
+ private class NewNoteOnTouchListener implements OnTouchListener {
+
+ public boolean onTouch(View v, MotionEvent event) {
+ switch (event.getAction()) {
+ case MotionEvent.ACTION_DOWN: {
+ Display display = getWindowManager().getDefaultDisplay();
+ android.graphics.Point size = new android.graphics.Point();
+ display.getSize(size);
+ int screenHeight = size.y;
+ int newNoteViewHeight = mAddNewNote.getHeight();
+ int start = screenHeight - newNoteViewHeight;
+ int eventY = start + (int) event.getY();
+ /**
+ * Minus TitleBar's height
+ */
+ if (mState == ListEditState.SUB_FOLDER) {
+ eventY -= mTitleBar.getHeight();
+ start -= mTitleBar.getHeight();
+ }
+ /**
+ * HACKME:When click the transparent part of "New Note" button, dispatch
+ * the event to the list view behind this button. The transparent part of
+ * "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel）
+ * and the line top of the button. The coordinate based on left of the "New
+ * Note" button. The 94 represents maximum height of the transparent part.
+ * Notice that, if the background of the button changes, the formula should
+ * also change. This is very bad, just for the UI designer's strong requirement.
+ */
+ if (event.getY() < (event.getX() * (-0.12) + 94)) {
+ View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
+ - mNotesListView.getFooterViewsCount());
+ if (view != null && view.getBottom() > start
+ && (view.getTop() < (start + 94))) {
+ mOriginY = (int) event.getY();
+ mDispatchY = eventY;
+ event.setLocation(event.getX(), mDispatchY);
+ mDispatch = true;
+ return mNotesListView.dispatchTouchEvent(event);
+ }
+ }
+ break;
+ }
+ case MotionEvent.ACTION_MOVE: {
+ if (mDispatch) {
+ mDispatchY += (int) event.getY() - mOriginY;
+ event.setLocation(event.getX(), mDispatchY);
+ return mNotesListView.dispatchTouchEvent(event);
+ }
+ break;
+ }
+ default: {
+ if (mDispatch) {
+ event.setLocation(event.getX(), mDispatchY);
+ mDispatch = false;
+ return mNotesListView.dispatchTouchEvent(event);
+ }
+ break;
+ }
+ }
+ return false;
+ }
+
+ };
+
+ private void startAsyncNotesListQuery() {
+ String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
+ : NORMAL_SELECTION;
+ mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
+ Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
+ String.valueOf(mCurrentFolderId)
+ }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+ }
+
+ private final class BackgroundQueryHandler extends AsyncQueryHandler {
+ public BackgroundQueryHandler(ContentResolver contentResolver) {
+ super(contentResolver);
+ }
+
+ @Override
+ protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
+ switch (token) {
+ case FOLDER_NOTE_LIST_QUERY_TOKEN:
+ mNotesListAdapter.changeCursor(cursor);
+ break;
+ case FOLDER_LIST_QUERY_TOKEN:
+ if (cursor != null && cursor.getCount() > 0) {
+ showFolderListMenu(cursor);
+ } else {
+ Log.e(TAG, "Query folder failed");
+ }
+ break;
+ default:
+ return;
+ }
+ }
+ }
+
+ private void showFolderListMenu(Cursor cursor) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
+ builder.setTitle(R.string.menu_title_select_folder);
+ final FoldersListAdapter adapter = new FoldersListAdapter(this, cursor);
+ builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
+
+ public void onClick(DialogInterface dialog, int which) {
+ DataUtils.batchMoveToFolder(mContentResolver,
+ mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which));
+ Toast.makeText(
+ NotesListActivity.this,
+ getString(R.string.format_move_notes_to_folder,
+ mNotesListAdapter.getSelectedCount(),
+ adapter.getFolderName(NotesListActivity.this, which)),
+ Toast.LENGTH_SHORT).show();
+ mModeCallBack.finishActionMode();
+ }
+ });
+ builder.show();
+ }
+
+ private void createNewNote() {
+ Intent intent = new Intent(this, NoteEditActivity.class);
+ intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+ intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId);
+ this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE);
+ }
+
+ private void batchDelete() {
+ new AsyncTask>() {
+ protected HashSet doInBackground(Void... unused) {
+ HashSet widgets = mNotesListAdapter.getSelectedWidget();
+ if (!isSyncMode()) {
+ // if not synced, delete notes directly
+ if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter
+ .getSelectedItemIds())) {
+ } else {
+ Log.e(TAG, "Delete notes error, should not happens");
+ }
+ } else {
+ // in sync mode, we'll move the deleted note into the trash
+ // folder
+ if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter
+ .getSelectedItemIds(), Notes.ID_TRASH_FOLER)) {
+ Log.e(TAG, "Move notes to trash folder error, should not happens");
+ }
+ }
+ return widgets;
+ }
+
+ @Override
+ protected void onPostExecute(HashSet widgets) {
+ if (widgets != null) {
+ for (AppWidgetAttribute widget : widgets) {
+ if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+ && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+ updateWidget(widget.widgetId, widget.widgetType);
+ }
+ }
+ }
+ mModeCallBack.finishActionMode();
+ }
+ }.execute();
+ }
+
+ private void deleteFolder(long folderId) {
+ if (folderId == Notes.ID_ROOT_FOLDER) {
+ Log.e(TAG, "Wrong folder id, should not happen " + folderId);
+ return;
+ }
+
+ HashSet ids = new HashSet();
+ ids.add(folderId);
+ HashSet widgets = DataUtils.getFolderNoteWidget(mContentResolver,
+ folderId);
+ if (!isSyncMode()) {
+ // if not synced, delete folder directly
+ DataUtils.batchDeleteNotes(mContentResolver, ids);
+ } else {
+ // in sync mode, we'll move the deleted folder into the trash folder
+ DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER);
+ }
+ if (widgets != null) {
+ for (AppWidgetAttribute widget : widgets) {
+ if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+ && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+ updateWidget(widget.widgetId, widget.widgetType);
+ }
+ }
+ }
+ }
+
+ private void openNode(NoteItemData data) {
+ Intent intent = new Intent(this, NoteEditActivity.class);
+ intent.setAction(Intent.ACTION_VIEW);
+ intent.putExtra(Intent.EXTRA_UID, data.getId());
+ this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE);
+ }
+
+ private void openFolder(NoteItemData data) {
+ mCurrentFolderId = data.getId();
+ startAsyncNotesListQuery();
+ if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
+ mState = ListEditState.CALL_RECORD_FOLDER;
+ mAddNewNote.setVisibility(View.GONE);
+ } else {
+ mState = ListEditState.SUB_FOLDER;
+ }
+ if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
+ mTitleBar.setText(R.string.call_record_folder_name);
+ } else {
+ mTitleBar.setText(data.getSnippet());
+ }
+ mTitleBar.setVisibility(View.VISIBLE);
+ }
+
+ public void onClick(View v) {
+ int viewId = v.getId();
+ if (viewId == R.id.btn_new_note) {
+ createNewNote();
+ }
+ }
+
+ private void showSoftInput() {
+ InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+ if (inputMethodManager != null) {
+ inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
+ }
+ }
+
+ private void hideSoftInput(View view) {
+ InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+ inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
+ }
+
+ private void showCreateOrModifyFolderDialog(final boolean create) {
+ final AlertDialog.Builder builder = new AlertDialog.Builder(this);
+ View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_text, null);
+ final EditText etName = (EditText) view.findViewById(R.id.et_foler_name);
+ showSoftInput();
+ if (!create) {
+ if (mFocusNoteDataItem != null) {
+ etName.setText(mFocusNoteDataItem.getSnippet());
+ builder.setTitle(getString(R.string.menu_folder_change_name));
+ } else {
+ Log.e(TAG, "The long click data item is null");
+ return;
+ }
+ } else {
+ etName.setText("");
+ builder.setTitle(this.getString(R.string.menu_create_folder));
+ }
+
+ builder.setPositiveButton(android.R.string.ok, null);
+ builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ hideSoftInput(etName);
+ }
+ });
+
+ final Dialog dialog = builder.setView(view).show();
+ final Button positive = (Button)dialog.findViewById(android.R.id.button1);
+ positive.setOnClickListener(new OnClickListener() {
+ public void onClick(View v) {
+ hideSoftInput(etName);
+ String name = etName.getText().toString();
+ if (DataUtils.checkVisibleFolderName(mContentResolver, name)) {
+ Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name),
+ Toast.LENGTH_LONG).show();
+ etName.setSelection(0, etName.length());
+ return;
+ }
+ if (!create) {
+ if (!TextUtils.isEmpty(name)) {
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.SNIPPET, name);
+ values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
+ values.put(NoteColumns.LOCAL_MODIFIED, 1);
+ mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID
+ + "=?", new String[] {
+ String.valueOf(mFocusNoteDataItem.getId())
+ });
+ }
+ } else if (!TextUtils.isEmpty(name)) {
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.SNIPPET, name);
+ values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
+ mContentResolver.insert(Notes.CONTENT_NOTE_URI, values);
+ }
+ dialog.dismiss();
+ }
+ });
+
+ if (TextUtils.isEmpty(etName.getText())) {
+ positive.setEnabled(false);
+ }
+ /**
+ * When the name edit text is null, disable the positive button
+ */
+ etName.addTextChangedListener(new TextWatcher() {
+ public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+ // TODO Auto-generated method stub
+
+ }
+
+ public void onTextChanged(CharSequence s, int start, int before, int count) {
+ if (TextUtils.isEmpty(etName.getText())) {
+ positive.setEnabled(false);
+ } else {
+ positive.setEnabled(true);
+ }
+ }
+
+ public void afterTextChanged(Editable s) {
+ // TODO Auto-generated method stub
+
+ }
+ });
+ }
+
+ @Override
+ public void onBackPressed() {
+ switch (mState) {
+ case SUB_FOLDER:
+ mCurrentFolderId = Notes.ID_ROOT_FOLDER;
+ mState = ListEditState.NOTE_LIST;
+ startAsyncNotesListQuery();
+ mTitleBar.setVisibility(View.GONE);
+ break;
+ case CALL_RECORD_FOLDER:
+ mCurrentFolderId = Notes.ID_ROOT_FOLDER;
+ mState = ListEditState.NOTE_LIST;
+ mAddNewNote.setVisibility(View.VISIBLE);
+ mTitleBar.setVisibility(View.GONE);
+ startAsyncNotesListQuery();
+ break;
+ case NOTE_LIST:
+ super.onBackPressed();
+ break;
+ default:
+ break;
+ }
+ }
+
+ private void updateWidget(int appWidgetId, int appWidgetType) {
+ Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
+ if (appWidgetType == Notes.TYPE_WIDGET_2X) {
+ intent.setClass(this, NoteWidgetProvider_2x.class);
+ } else if (appWidgetType == Notes.TYPE_WIDGET_4X) {
+ intent.setClass(this, NoteWidgetProvider_4x.class);
+ } else {
+ Log.e(TAG, "Unspported widget type");
+ return;
+ }
+
+ intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
+ appWidgetId
+ });
+
+ sendBroadcast(intent);
+ setResult(RESULT_OK, intent);
+ }
+
+ private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() {
+ public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
+ if (mFocusNoteDataItem != null) {
+ menu.setHeaderTitle(mFocusNoteDataItem.getSnippet());
+ menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view);
+ menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete);
+ menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name);
+ }
+ }
+ };
+
+ @Override
+ public void onContextMenuClosed(Menu menu) {
+ if (mNotesListView != null) {
+ mNotesListView.setOnCreateContextMenuListener(null);
+ }
+ super.onContextMenuClosed(menu);
+ }
+
+ @Override
+ public boolean onContextItemSelected(MenuItem item) {
+ if (mFocusNoteDataItem == null) {
+ Log.e(TAG, "The long click data item is null");
+ return false;
+ }
+ switch (item.getItemId()) {
+ case MENU_FOLDER_VIEW:
+ openFolder(mFocusNoteDataItem);
+ break;
+ case MENU_FOLDER_DELETE:
+ AlertDialog.Builder builder = new AlertDialog.Builder(this);
+ builder.setTitle(getString(R.string.alert_title_delete));
+ builder.setIcon(android.R.drawable.ic_dialog_alert);
+ builder.setMessage(getString(R.string.alert_message_delete_folder));
+ builder.setPositiveButton(android.R.string.ok,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ deleteFolder(mFocusNoteDataItem.getId());
+ }
+ });
+ builder.setNegativeButton(android.R.string.cancel, null);
+ builder.show();
+ break;
+ case MENU_FOLDER_CHANGE_NAME:
+ showCreateOrModifyFolderDialog(false);
+ break;
+ default:
+ break;
+ }
+
+ return true;
+ }
+
+ @Override
+ public boolean onPrepareOptionsMenu(Menu menu) {
+ menu.clear();
+ if (mState == ListEditState.NOTE_LIST) {
+ getMenuInflater().inflate(R.menu.note_list, menu);
+ // set sync or sync_cancel
+ // Temporarily disabled sync functionality
+ menu.findItem(R.id.menu_sync).setTitle(R.string.menu_sync);
+ } else if (mState == ListEditState.SUB_FOLDER) {
+ getMenuInflater().inflate(R.menu.sub_folder, menu);
+ } else if (mState == ListEditState.CALL_RECORD_FOLDER) {
+ getMenuInflater().inflate(R.menu.call_record_folder, menu);
+ } else {
+ Log.e(TAG, "Wrong state:" + mState);
+ }
+ return true;
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ int itemId = item.getItemId();
+ if (itemId == R.id.menu_new_folder) {
+ showCreateOrModifyFolderDialog(true);
+ } else if (itemId == R.id.menu_export_text) {
+ exportNoteToText();
+ } else if (itemId == R.id.menu_sync) {
+ // Temporarily disabled sync functionality
+ Toast.makeText(this, "Sync functionality temporarily disabled", Toast.LENGTH_SHORT).show();
+ startPreferenceActivity();
+ } else if (itemId == R.id.menu_setting) {
+ startPreferenceActivity();
+ } else if (itemId == R.id.menu_new_note) {
+ createNewNote();
+ } else if (itemId == R.id.menu_search) {
+ onSearchRequested();
+ }
+ return true;
+ }
+
+ @Override
+ public boolean onSearchRequested() {
+ startSearch(null, false, null /* appData */, false);
+ return true;
+ }
+
+ private void exportNoteToText() {
+ final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this);
+ new AsyncTask() {
+
+ @Override
+ protected Integer doInBackground(Void... unused) {
+ return backup.exportToText();
+ }
+
+ @Override
+ protected void onPostExecute(Integer result) {
+ if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
+ builder.setTitle(NotesListActivity.this
+ .getString(R.string.failed_sdcard_export));
+ builder.setMessage(NotesListActivity.this
+ .getString(R.string.error_sdcard_unmounted));
+ builder.setPositiveButton(android.R.string.ok, null);
+ builder.show();
+ } else if (result == BackupUtils.STATE_SUCCESS) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
+ builder.setTitle(NotesListActivity.this
+ .getString(R.string.success_sdcard_export));
+ builder.setMessage(NotesListActivity.this.getString(
+ R.string.format_exported_file_location, backup
+ .getExportedTextFileName(), backup.getExportedTextFileDir()));
+ builder.setPositiveButton(android.R.string.ok, null);
+ builder.show();
+ } else if (result == BackupUtils.STATE_SYSTEM_ERROR) {
+ AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
+ builder.setTitle(NotesListActivity.this
+ .getString(R.string.failed_sdcard_export));
+ builder.setMessage(NotesListActivity.this
+ .getString(R.string.error_sdcard_export));
+ builder.setPositiveButton(android.R.string.ok, null);
+ builder.show();
+ }
+ }
+
+ }.execute();
+ }
+
+ private boolean isSyncMode() {
+ // Temporarily disabled sync functionality
+ return false;
+ // return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
+ }
+
+ private void startPreferenceActivity() {
+ Activity from = getParent() != null ? getParent() : this;
+ Intent intent = new Intent(from, NotesPreferenceActivity.class);
+ from.startActivityIfNeeded(intent, -1);
+ }
+
+ private class OnListItemClickListener implements OnItemClickListener {
+
+ public void onItemClick(AdapterView parent, View view, int position, long id) {
+ if (view instanceof NotesListItem) {
+ NoteItemData item = ((NotesListItem) view).getItemData();
+ if (mNotesListAdapter.isInChoiceMode()) {
+ if (item.getType() == Notes.TYPE_NOTE) {
+ position = position - mNotesListView.getHeaderViewsCount();
+ mModeCallBack.onItemCheckedStateChanged(null, position, id,
+ !mNotesListAdapter.isSelectedItem(position));
+ }
+ return;
+ }
+
+ switch (mState) {
+ case NOTE_LIST:
+ if (item.getType() == Notes.TYPE_FOLDER
+ || item.getType() == Notes.TYPE_SYSTEM) {
+ openFolder(item);
+ } else if (item.getType() == Notes.TYPE_NOTE) {
+ openNode(item);
+ } else {
+ Log.e(TAG, "Wrong note type in NOTE_LIST");
+ }
+ break;
+ case SUB_FOLDER:
+ case CALL_RECORD_FOLDER:
+ if (item.getType() == Notes.TYPE_NOTE) {
+ openNode(item);
+ } else {
+ Log.e(TAG, "Wrong note type in SUB_FOLDER");
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ }
+
+ private void startQueryDestinationFolders() {
+ String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?";
+ selection = (mState == ListEditState.NOTE_LIST) ? selection:
+ "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
+
+ mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN,
+ null,
+ Notes.CONTENT_NOTE_URI,
+ FoldersListAdapter.PROJECTION,
+ selection,
+ new String[] {
+ String.valueOf(Notes.TYPE_FOLDER),
+ String.valueOf(Notes.ID_TRASH_FOLER),
+ String.valueOf(mCurrentFolderId)
+ },
+ NoteColumns.MODIFIED_DATE + " DESC");
+ }
+
+ public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {
+ if (view instanceof NotesListItem) {
+ mFocusNoteDataItem = ((NotesListItem) view).getItemData();
+ if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) {
+ if (mNotesListView.startActionMode(mModeCallBack) != null) {
+ mModeCallBack.onItemCheckedStateChanged(null, position, id, true);
+ mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
+ } else {
+ Log.e(TAG, "startActionMode fails");
+ }
+ } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) {
+ mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener);
+ }
+ }
+ return false;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java b/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java
new file mode 100644
index 0000000..fb36b9e
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java
@@ -0,0 +1,301 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesListAdapter.java
+ * 描述: 便签列表数据适配器
+ * 作用: 连接数据源与ListView，管理列表项的创建和数据绑定
+ * 功能:
+ * 1. 创建和复用列表项视图
+ * 2. 将数据绑定到列表项视图
+ * 3. 管理列表的多选模式
+ * 4. 提供选中项的数据访问方法
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CursorAdapter;
+
+import net.micode.notes.data.Notes;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+
+/**
+ * 便签列表适配器类
+ *
+ * 继承自CursorAdapter，用于管理便签列表的数据和视图
+ * 提供多选模式支持，管理选中项的状态
+ * 提供便签计数和选中项数据的访问方法
+ */
+public class NotesListAdapter extends CursorAdapter {
+ /** 日志标签 */
+ private static final String TAG = "NotesListAdapter";
+
+ /** 上下文环境 */
+ private Context mContext;
+
+ /** 选中项索引的映射表 */
+ private HashMap mSelectedIndex;
+
+ /** 便签数量（不包括文件夹） */
+ private int mNotesCount;
+
+ /** 是否处于多选模式 */
+ private boolean mChoiceMode;
+
+ /**
+ * 小部件属性类
+ * 用于存储小部件的ID和类型
+ */
+ public static class AppWidgetAttribute {
+ /** 小部件ID */
+ public int widgetId;
+
+ /** 小部件类型 */
+ public int widgetType;
+ };
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ */
+ public NotesListAdapter(Context context) {
+ super(context, null);
+ mSelectedIndex = new HashMap();
+ mContext = context;
+ mNotesCount = 0;
+ }
+
+ /**
+ * 创建新的列表项视图
+ *
+ * @param context 上下文环境
+ * @param cursor 数据游标
+ * @param parent 父视图
+ * @return 新创建的列表项视图
+ */
+ @Override
+ public View newView(Context context, Cursor cursor, ViewGroup parent) {
+ return new NotesListItem(context);
+ }
+
+ /**
+ * 将数据绑定到列表项视图
+ *
+ * @param view 列表项视图
+ * @param context 上下文环境
+ * @param cursor 数据游标
+ */
+ @Override
+ public void bindView(View view, Context context, Cursor cursor) {
+ if (view instanceof NotesListItem) {
+ // 创建数据对象并绑定到视图
+ NoteItemData itemData = new NoteItemData(context, cursor);
+ ((NotesListItem) view).bind(context, itemData, mChoiceMode,
+ isSelectedItem(cursor.getPosition()));
+ }
+ }
+
+ /**
+ * 设置指定位置项的选中状态
+ *
+ * @param position 列表项位置
+ * @param checked 是否选中
+ */
+ public void setCheckedItem(final int position, final boolean checked) {
+ mSelectedIndex.put(position, checked);
+ notifyDataSetChanged();
+ }
+
+ /**
+ * 检查是否处于多选模式
+ *
+ * @return 如果处于多选模式则返回true，否则返回false
+ */
+ public boolean isInChoiceMode() {
+ return mChoiceMode;
+ }
+
+ /**
+ * 设置多选模式状态
+ *
+ * @param mode 是否启用多选模式
+ */
+ public void setChoiceMode(boolean mode) {
+ // 清空选中项
+ mSelectedIndex.clear();
+ mChoiceMode = mode;
+ }
+
+ /**
+ * 全选或取消全选所有便签
+ *
+ * @param checked 是否选中
+ */
+ public void selectAll(boolean checked) {
+ Cursor cursor = getCursor();
+ for (int i = 0; i < getCount(); i++) {
+ if (cursor.moveToPosition(i)) {
+ // 只选择便签，不选择文件夹
+ if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
+ setCheckedItem(i, checked);
+ }
+ }
+ }
+ }
+
+ /**
+ * 获取所有选中项的ID集合
+ *
+ * @return 选中项ID的HashSet
+ */
+ public HashSet getSelectedItemIds() {
+ HashSet itemSet = new HashSet();
+ for (Integer position : mSelectedIndex.keySet()) {
+ if (mSelectedIndex.get(position) == true) {
+ Long id = getItemId(position);
+ if (id == Notes.ID_ROOT_FOLDER) {
+ Log.d(TAG, "Wrong item id, should not happen");
+ } else {
+ itemSet.add(id);
+ }
+ }
+ }
+
+ return itemSet;
+ }
+
+ /**
+ * 获取所有选中项关联的小部件属性集合
+ *
+ * @return 小部件属性的HashSet
+ */
+ public HashSet getSelectedWidget() {
+ HashSet itemSet = new HashSet();
+ for (Integer position : mSelectedIndex.keySet()) {
+ if (mSelectedIndex.get(position) == true) {
+ Cursor c = (Cursor) getItem(position);
+ if (c != null) {
+ AppWidgetAttribute widget = new AppWidgetAttribute();
+ NoteItemData item = new NoteItemData(mContext, c);
+ widget.widgetId = item.getWidgetId();
+ widget.widgetType = item.getWidgetType();
+ itemSet.add(widget);
+ /**
+ * Don't close cursor here, only the adapter could close it
+ */
+ } else {
+ Log.e(TAG, "Invalid cursor");
+ return null;
+ }
+ }
+ }
+ return itemSet;
+ }
+
+ /**
+ * 获取选中项的数量
+ *
+ * @return 选中项数量
+ */
+ public int getSelectedCount() {
+ Collection values = mSelectedIndex.values();
+ if (null == values) {
+ return 0;
+ }
+ Iterator iter = values.iterator();
+ int count = 0;
+ while (iter.hasNext()) {
+ if (true == iter.next()) {
+ count++;
+ }
+ }
+ return count;
+ }
+
+ /**
+ * 检查是否所有便签都已选中
+ *
+ * @return 如果所有便签都已选中则返回true，否则返回false
+ */
+ public boolean isAllSelected() {
+ int checkedCount = getSelectedCount();
+ return (checkedCount != 0 && checkedCount == mNotesCount);
+ }
+
+ /**
+ * 检查指定位置的项是否被选中
+ *
+ * @param position 列表项位置
+ * @return 如果选中则返回true，否则返回false
+ */
+ public boolean isSelectedItem(final int position) {
+ if (null == mSelectedIndex.get(position)) {
+ return false;
+ }
+ return mSelectedIndex.get(position);
+ }
+
+ /**
+ * 当数据内容变化时调用
+ * 重新计算便签数量
+ */
+ @Override
+ protected void onContentChanged() {
+ super.onContentChanged();
+ calcNotesCount();
+ }
+
+ /**
+ * 更换数据游标
+ * 重新计算便签数量
+ *
+ * @param cursor 新的数据游标
+ */
+ @Override
+ public void changeCursor(Cursor cursor) {
+ super.changeCursor(cursor);
+ calcNotesCount();
+ }
+
+ /**
+ * 计算便签数量（不包括文件夹）
+ * 用于全选功能和判断是否全部选中
+ */
+ private void calcNotesCount() {
+ mNotesCount = 0;
+ for (int i = 0; i < getCount(); i++) {
+ Cursor c = (Cursor) getItem(i);
+ if (c != null) {
+ // 只计算便签，不计算文件夹
+ if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
+ mNotesCount++;
+ }
+ } else {
+ Log.e(TAG, "Invalid cursor");
+ return;
+ }
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NotesListItem.java b/app/src/main/java/net/micode/notes/ui/NotesListItem.java
new file mode 100644
index 0000000..123cfe5
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NotesListItem.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesListItem.java
+ * 描述: 便签列表项视图组件
+ * 作用: 提供便签列表中单个项目的视图表现，负责数据与UI的绑定
+ * 功能:
+ * 1. 显示便签或文件夹的基本信息（标题、时间、提醒图标等）
+ * 2. 根据便签类型和位置设置不同的背景样式
+ * 3. 支持多选模式下的勾选功能
+ * 4. 处理通话记录便签的特殊显示逻辑
+ */
+package net.micode.notes.ui;
+
+import android.content.Context;
+import android.text.format.DateUtils;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.DataUtils;
+import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
+
+/**
+ * 便签列表项视图类
+ *
+ * 继承自LinearLayout，用于在列表中显示单个便签或文件夹
+ * 根据数据类型和状态设置不同的显示效果
+ * 处理多选模式下的勾选状态
+ */
+public class NotesListItem extends LinearLayout {
+ /** 提醒图标视图 */
+ private ImageView mAlert;
+
+ /** 标题文本视图 */
+ private TextView mTitle;
+
+ /** 时间文本视图 */
+ private TextView mTime;
+
+ /** 通话联系人名称文本视图（用于通话记录便签） */
+ private TextView mCallName;
+
+ /** 列表项关联的数据对象 */
+ private NoteItemData mItemData;
+
+ /** 多选模式下的复选框 */
+ private CheckBox mCheckBox;
+
+ /**
+ * 构造函数
+ *
+ * @param context 上下文环境
+ */
+ public NotesListItem(Context context) {
+ super(context);
+ // 加载列表项布局
+ inflate(context, R.layout.note_item, this);
+ // 初始化视图组件
+ mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
+ mTitle = (TextView) findViewById(R.id.tv_title);
+ mTime = (TextView) findViewById(R.id.tv_time);
+ mCallName = (TextView) findViewById(R.id.tv_name);
+ mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
+ }
+
+ /**
+ * 绑定数据到视图
+ * 根据数据类型和状态设置不同的显示效果
+ *
+ * @param context 上下文环境
+ * @param data 列表项数据对象
+ * @param choiceMode 是否处于多选模式
+ * @param checked 是否被选中
+ */
+ public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
+ // 处理多选模式下的复选框显示
+ if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
+ mCheckBox.setVisibility(View.VISIBLE);
+ mCheckBox.setChecked(checked);
+ } else {
+ mCheckBox.setVisibility(View.GONE);
+ }
+
+ mItemData = data;
+ // 根据不同类型的便签设置不同的显示效果
+ if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
+ // 通话记录文件夹的显示
+ mCallName.setVisibility(View.GONE);
+ mAlert.setVisibility(View.VISIBLE);
+ mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
+ mTitle.setText(context.getString(R.string.call_record_folder_name)
+ + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
+ mAlert.setImageResource(R.drawable.call_record);
+ } else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
+ // 通话记录便签的显示
+ mCallName.setVisibility(View.VISIBLE);
+ mCallName.setText(data.getCallName());
+ mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
+ mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+ if (data.hasAlert()) {
+ mAlert.setImageResource(R.drawable.clock);
+ mAlert.setVisibility(View.VISIBLE);
+ } else {
+ mAlert.setVisibility(View.GONE);
+ }
+ } else {
+ // 普通便签和文件夹的显示
+ mCallName.setVisibility(View.GONE);
+ mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
+
+ if (data.getType() == Notes.TYPE_FOLDER) {
+ // 文件夹显示
+ mTitle.setText(data.getSnippet()
+ + context.getString(R.string.format_folder_files_count,
+ data.getNotesCount()));
+ mAlert.setVisibility(View.GONE);
+ } else {
+ // 普通便签显示
+ mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+ if (data.hasAlert()) {
+ mAlert.setImageResource(R.drawable.clock);
+ mAlert.setVisibility(View.VISIBLE);
+ } else {
+ mAlert.setVisibility(View.GONE);
+ }
+ }
+ }
+ // 设置修改时间
+ mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
+
+ // 设置背景样式
+ setBackground(data);
+ }
+
+ /**
+ * 根据便签类型和位置设置适当的背景样式
+ *
+ * @param data 列表项数据对象
+ */
+ private void setBackground(NoteItemData data) {
+ int id = data.getBgColorId();
+ if (data.getType() == Notes.TYPE_NOTE) {
+ // 根据便签在列表中的位置选择不同的背景资源
+ if (data.isSingle() || data.isOneFollowingFolder()) {
+ // 单独一个便签或文件夹后的单个便签
+ setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
+ } else if (data.isLast()) {
+ // 列表中最后一个便签
+ setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
+ } else if (data.isFirst() || data.isMultiFollowingFolder()) {
+ // 列表中第一个便签或文件夹后的多个便签中的第一个
+ setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
+ } else {
+ // 列表中间的便签
+ setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
+ }
+ } else {
+ // 文件夹使用固定的背景样式
+ setBackgroundResource(NoteItemBgResources.getFolderBgRes());
+ }
+ }
+
+ /**
+ * 获取列表项关联的数据对象
+ *
+ * @return 列表项数据对象
+ */
+ public NoteItemData getItemData() {
+ return mItemData;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java b/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java
new file mode 100644
index 0000000..55b5feb
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java
@@ -0,0 +1,517 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NotesPreferenceActivity.java
+ * 描述: 便签应用的设置界面
+ * 作用: 提供应用设置选项，特别是Google账户同步功能的配置
+ * 功能:
+ * 1. 管理Google账户同步设置
+ * 2. 提供同步按钮和状态显示
+ * 3. 处理账户选择和添加
+ * 4. 显示上次同步时间
+ */
+package net.micode.notes.ui;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.app.ActionBar;
+import android.app.AlertDialog;
+import android.content.BroadcastReceiver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceClickListener;
+import android.preference.PreferenceActivity;
+import android.preference.PreferenceCategory;
+import android.text.TextUtils;
+import android.text.format.DateFormat;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.remote.GTaskSyncService;
+
+/**
+ * 便签设置活动类
+ *
+ * 继承自PreferenceActivity，提供便签应用的设置界面
+ * 主要功能是配置Google账户同步，包括账户选择和同步操作
+ * 显示同步状态和上次同步时间
+ */
+public class NotesPreferenceActivity extends PreferenceActivity {
+ /** 首选项文件名 */
+ public static final String PREFERENCE_NAME = "notes_preferences";
+
+ /** 同步账户名称的首选项键 */
+ public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
+
+ /** 上次同步时间的首选项键 */
+ public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
+
+ /** 背景颜色设置的首选项键 */
+ public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
+
+ /** 同步账户设置的首选项键 */
+ private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
+
+ /** 账户筛选的权限键 */
+ private static final String AUTHORITIES_FILTER_KEY = "authorities";
+
+ /** 账户设置分类 */
+ private PreferenceCategory mAccountCategory;
+
+ /** Google任务同步广播接收器 */
+ private GTaskReceiver mReceiver;
+
+ /** 原始账户列表，用于检测新添加的账户 */
+ private Account[] mOriAccounts;
+
+ /** 是否已添加新账户的标志 */
+ private boolean mHasAddedAccount;
+
+ /**
+ * 活动创建时的初始化
+ *
+ * @param icicle 保存的实例状态
+ */
+ @Override
+ protected void onCreate(Bundle icicle) {
+ super.onCreate(icicle);
+
+ /* 设置应用图标用于导航 */
+ getActionBar().setDisplayHomeAsUpEnabled(true);
+
+ // 加载首选项资源
+ addPreferencesFromResource(R.xml.preferences);
+ mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
+
+ // 注册同步服务广播接收器
+ mReceiver = new GTaskReceiver();
+ IntentFilter filter = new IntentFilter();
+ filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
+ registerReceiver(mReceiver, filter);
+
+ mOriAccounts = null;
+ // 添加设置页面头部视图
+ View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
+ getListView().addHeaderView(header, null, true);
+ }
+
+ /**
+ * 活动恢复时的处理
+ * 检查是否添加了新账户，并刷新UI
+ */
+ @Override
+ protected void onResume() {
+ super.onResume();
+
+ // 如果用户添加了新账户，需要自动设置为同步账户
+ if (mHasAddedAccount) {
+ Account[] accounts = getGoogleAccounts();
+ if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
+ for (Account accountNew : accounts) {
+ boolean found = false;
+ for (Account accountOld : mOriAccounts) {
+ if (TextUtils.equals(accountOld.name, accountNew.name)) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ // 找到新添加的账户，设置为同步账户
+ setSyncAccount(accountNew.name);
+ break;
+ }
+ }
+ }
+ }
+
+ // 刷新UI显示
+ refreshUI();
+ }
+
+ /**
+ * 活动销毁时的清理工作
+ */
+ @Override
+ protected void onDestroy() {
+ if (mReceiver != null) {
+ unregisterReceiver(mReceiver);
+ }
+ super.onDestroy();
+ }
+
+ /**
+ * 加载账户首选项
+ * 设置账户选择的点击监听器
+ */
+ private void loadAccountPreference() {
+ mAccountCategory.removeAll();
+
+ Preference accountPref = new Preference(this);
+ final String defaultAccount = getSyncAccountName(this);
+ accountPref.setTitle(getString(R.string.preferences_account_title));
+ accountPref.setSummary(getString(R.string.preferences_account_summary));
+ accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+ public boolean onPreferenceClick(Preference preference) {
+ if (!GTaskSyncService.isSyncing()) {
+ if (TextUtils.isEmpty(defaultAccount)) {
+ // 首次设置账户
+ showSelectAccountAlertDialog();
+ } else {
+ // 如果账户已设置，需要提示用户更改的风险
+ showChangeAccountConfirmAlertDialog();
+ }
+ } else {
+ // 同步进行中，不能更改账户
+ Toast.makeText(NotesPreferenceActivity.this,
+ R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
+ .show();
+ }
+ return true;
+ }
+ });
+
+ mAccountCategory.addPreference(accountPref);
+ }
+
+ /**
+ * 加载同步按钮和状态
+ * 设置按钮状态和点击监听器
+ */
+ private void loadSyncButton() {
+ Button syncButton = (Button) findViewById(R.id.preference_sync_button);
+ TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
+
+ // 根据同步状态设置按钮文本和点击事件
+ if (GTaskSyncService.isSyncing()) {
+ // 同步进行中，显示取消同步按钮
+ syncButton.setText(getString(R.string.preferences_button_sync_cancel));
+ syncButton.setOnClickListener(new View.OnClickListener() {
+ public void onClick(View v) {
+ GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
+ }
+ });
+ } else {
+ // 未同步，显示立即同步按钮
+ syncButton.setText(getString(R.string.preferences_button_sync_immediately));
+ syncButton.setOnClickListener(new View.OnClickListener() {
+ public void onClick(View v) {
+ GTaskSyncService.startSync(NotesPreferenceActivity.this);
+ }
+ });
+ }
+ // 只有设置了同步账户才启用同步按钮
+ syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
+
+ // 设置上次同步时间显示
+ if (GTaskSyncService.isSyncing()) {
+ // 同步进行中，显示进度信息
+ lastSyncTimeView.setText(GTaskSyncService.getProgressString());
+ lastSyncTimeView.setVisibility(View.VISIBLE);
+ } else {
+ // 未同步，显示上次同步时间
+ long lastSyncTime = getLastSyncTime(this);
+ if (lastSyncTime != 0) {
+ lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
+ DateFormat.format(getString(R.string.preferences_last_sync_time_format),
+ lastSyncTime)));
+ lastSyncTimeView.setVisibility(View.VISIBLE);
+ } else {
+ lastSyncTimeView.setVisibility(View.GONE);
+ }
+ }
+ }
+
+ /**
+ * 刷新UI显示
+ * 更新账户设置和同步按钮状态
+ */
+ private void refreshUI() {
+ loadAccountPreference();
+ loadSyncButton();
+ }
+
+ /**
+ * 显示选择账户对话框
+ * 列出所有Google账户供用户选择
+ */
+ private void showSelectAccountAlertDialog() {
+ AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
+
+ // 设置对话框标题和副标题
+ View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
+ TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
+ titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
+ TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
+ subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
+
+ dialogBuilder.setCustomTitle(titleView);
+ dialogBuilder.setPositiveButton(null, null);
+
+ // 获取所有Google账户
+ Account[] accounts = getGoogleAccounts();
+ String defAccount = getSyncAccountName(this);
+
+ mOriAccounts = accounts;
+ mHasAddedAccount = false;
+
+ if (accounts.length > 0) {
+ // 显示账户列表
+ CharSequence[] items = new CharSequence[accounts.length];
+ final CharSequence[] itemMapping = items;
+ int checkedItem = -1;
+ int index = 0;
+ for (Account account : accounts) {
+ if (TextUtils.equals(account.name, defAccount)) {
+ checkedItem = index;
+ }
+ items[index++] = account.name;
+ }
+ dialogBuilder.setSingleChoiceItems(items, checkedItem,
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ // 选择账户后设置为同步账户
+ setSyncAccount(itemMapping[which].toString());
+ dialog.dismiss();
+ refreshUI();
+ }
+ });
+ }
+
+ // 添加"添加账户"选项
+ View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
+ dialogBuilder.setView(addAccountView);
+
+ final AlertDialog dialog = dialogBuilder.show();
+ addAccountView.setOnClickListener(new View.OnClickListener() {
+ public void onClick(View v) {
+ // 标记已添加账户，跳转到添加账户界面
+ mHasAddedAccount = true;
+ Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
+ intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
+ "gmail-ls"
+ });
+ startActivityForResult(intent, -1);
+ dialog.dismiss();
+ }
+ });
+ }
+
+ /**
+ * 显示更改账户确认对话框
+ * 提醒用户更改账户可能导致的问题
+ */
+ private void showChangeAccountConfirmAlertDialog() {
+ AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
+
+ // 设置对话框标题和警告信息
+ View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
+ TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
+ titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
+ getSyncAccountName(this)));
+ TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
+ subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
+ dialogBuilder.setCustomTitle(titleView);
+
+ // 设置选项菜单
+ CharSequence[] menuItemArray = new CharSequence[] {
+ getString(R.string.preferences_menu_change_account),
+ getString(R.string.preferences_menu_remove_account),
+ getString(R.string.preferences_menu_cancel)
+ };
+ dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ if (which == 0) {
+ // 更改账户
+ showSelectAccountAlertDialog();
+ } else if (which == 1) {
+ // 移除账户
+ removeSyncAccount();
+ refreshUI();
+ }
+ }
+ });
+ dialogBuilder.show();
+ }
+
+ /**
+ * 获取设备上的所有Google账户
+ *
+ * @return Google账户数组
+ */
+ private Account[] getGoogleAccounts() {
+ AccountManager accountManager = AccountManager.get(this);
+ return accountManager.getAccountsByType("com.google");
+ }
+
+ /**
+ * 设置同步账户
+ *
+ * @param account 账户名称
+ */
+ private void setSyncAccount(String account) {
+ if (!getSyncAccountName(this).equals(account)) {
+ // 保存账户名称到首选项
+ SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
+ SharedPreferences.Editor editor = settings.edit();
+ if (account != null) {
+ editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
+ } else {
+ editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
+ }
+ editor.commit();
+
+ // 清除上次同步时间
+ setLastSyncTime(this, 0);
+
+ // 清除本地Google任务相关信息
+ new Thread(new Runnable() {
+ public void run() {
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.GTASK_ID, "");
+ values.put(NoteColumns.SYNC_ID, 0);
+ getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
+ }
+ }).start();
+
+ // 显示设置成功提示
+ Toast.makeText(NotesPreferenceActivity.this,
+ getString(R.string.preferences_toast_success_set_accout, account),
+ Toast.LENGTH_SHORT).show();
+ }
+ }
+
+ /**
+ * 移除同步账户
+ * 清除所有同步相关设置
+ */
+ private void removeSyncAccount() {
+ // 从首选项中移除账户名称和同步时间
+ SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
+ SharedPreferences.Editor editor = settings.edit();
+ if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
+ editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
+ }
+ if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
+ editor.remove(PREFERENCE_LAST_SYNC_TIME);
+ }
+ editor.commit();
+
+ // 清除本地Google任务相关信息
+ new Thread(new Runnable() {
+ public void run() {
+ ContentValues values = new ContentValues();
+ values.put(NoteColumns.GTASK_ID, "");
+ values.put(NoteColumns.SYNC_ID, 0);
+ getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
+ }
+ }).start();
+ }
+
+ /**
+ * 获取同步账户名称
+ *
+ * @param context 上下文环境
+ * @return 同步账户名称，如果未设置则返回空字符串
+ */
+ public static String getSyncAccountName(Context context) {
+ SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+ Context.MODE_PRIVATE);
+ return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
+ }
+
+ /**
+ * 设置上次同步时间
+ *
+ * @param context 上下文环境
+ * @param time 同步时间戳
+ */
+ public static void setLastSyncTime(Context context, long time) {
+ SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+ Context.MODE_PRIVATE);
+ SharedPreferences.Editor editor = settings.edit();
+ editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
+ editor.commit();
+ }
+
+ /**
+ * 获取上次同步时间
+ *
+ * @param context 上下文环境
+ * @return 上次同步的时间戳，如果未同步则返回0
+ */
+ public static long getLastSyncTime(Context context) {
+ SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+ Context.MODE_PRIVATE);
+ return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
+ }
+
+ /**
+ * Google任务同步广播接收器
+ * 用于接收同步服务的状态更新广播
+ */
+ private class GTaskReceiver extends BroadcastReceiver {
+
+ /**
+ * 接收同步服务广播
+ * 更新UI显示同步状态
+ */
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ refreshUI();
+ if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
+ // 同步进行中，更新进度显示
+ TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
+ syncStatus.setText(intent
+ .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
+ }
+
+ }
+ }
+
+ /**
+ * 处理选项菜单项点击事件
+ *
+ * @param item 点击的菜单项
+ * @return 是否已处理事件
+ */
+ public boolean onOptionsItemSelected(MenuItem item) {
+ switch (item.getItemId()) {
+ case android.R.id.home:
+ // 返回主界面
+ Intent intent = new Intent(this, NotesListActivity.class);
+ intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+ startActivity(intent);
+ return true;
+ default:
+ return false;
+ }
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider.java b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider.java
new file mode 100644
index 0000000..0f248c3
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider.java
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteWidgetProvider.java
+ * 描述: 便签小部件提供者的抽象基类，定义了小部件的基本功能和行为
+ * 作用: 管理便签小部件的创建、更新和删除，处理小部件与便签数据的交互
+ */
+package net.micode.notes.widget;
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.util.Log;
+import android.widget.RemoteViews;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.tool.ResourceParser;
+import net.micode.notes.ui.NoteEditActivity;
+import net.micode.notes.ui.NotesListActivity;
+
+/**
+ * 便签小部件提供者抽象基类
+ *
+ * 该类继承自AppWidgetProvider，提供了便签小部件的基本功能实现，
+ * 包括小部件的更新、删除等操作，以及与便签数据的交互逻辑。
+ * 具体的小部件类型（如2x和4x）需要继承此类并实现抽象方法。
+ */
+public abstract class NoteWidgetProvider extends AppWidgetProvider {
+ /**
+ * 查询便签数据的投影列
+ * 定义了从数据库查询便签时需要获取的列
+ */
+ public static final String [] PROJECTION = new String [] {
+ NoteColumns.ID, // 便签ID
+ NoteColumns.BG_COLOR_ID, // 背景颜色ID
+ NoteColumns.SNIPPET // 便签内容摘要
+ };
+
+ /**
+ * 查询结果列索引常量
+ */
+ public static final int COLUMN_ID = 0; // ID列索引
+ public static final int COLUMN_BG_COLOR_ID = 1; // 背景颜色ID列索引
+ public static final int COLUMN_SNIPPET = 2; // 内容摘要列索引
+
+ /**
+ * 日志标签
+ */
+ private static final String TAG = "NoteWidgetProvider";
+
+ /**
+ * 当小部件被删除时调用
+ *
+ * 从数据库中清除被删除小部件的关联信息
+ *
+ * @param context 上下文环境
+ * @param appWidgetIds 被删除的小部件ID数组
+ */
+ @Override
+ public void onDeleted(Context context, int[] appWidgetIds) {
+ // 创建更新数据
+ ContentValues values = new ContentValues();
+ // 将小部件ID设置为无效值，表示该便签不再与任何小部件关联
+ values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
+
+ // 遍历所有被删除的小部件ID
+ for (int i = 0; i < appWidgetIds.length; i++) {
+ // 更新数据库，清除小部件ID与便签的关联
+ context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
+ values,
+ NoteColumns.WIDGET_ID + "=?",
+ new String[] { String.valueOf(appWidgetIds[i])});
+ }
+ }
+
+ /**
+ * 获取与指定小部件ID关联的便签信息
+ *
+ * @param context 上下文环境
+ * @param widgetId 小部件ID
+ * @return 包含便签信息的Cursor对象，如果没有找到则返回空Cursor
+ */
+ private Cursor getNoteWidgetInfo(Context context, int widgetId) {
+ // 查询与指定小部件ID关联的便签数据
+ // 条件：匹配小部件ID且不在回收站中
+ return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+ PROJECTION,
+ NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+ new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
+ null);
+ }
+
+ /**
+ * 更新小部件
+ *
+ * 供子类调用的公共更新方法，默认非隐私模式
+ *
+ * @param context 上下文环境
+ * @param appWidgetManager 小部件管理器
+ * @param appWidgetIds 需要更新的小部件ID数组
+ */
+ protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+ // 调用私有更新方法，隐私模式设为false
+ update(context, appWidgetManager, appWidgetIds, false);
+ }
+
+ /**
+ * 更新小部件的私有实现
+ *
+ * 根据小部件ID更新对应的小部件显示内容和点击行为
+ *
+ * @param context 上下文环境
+ * @param appWidgetManager 小部件管理器
+ * @param appWidgetIds 需要更新的小部件ID数组
+ * @param privacyMode 是否为隐私模式，隐私模式下不显示便签内容
+ */
+ private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
+ boolean privacyMode) {
+ // 遍历所有需要更新的小部件
+ for (int i = 0; i < appWidgetIds.length; i++) {
+ // 检查小部件ID是否有效
+ if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
+ // 设置默认背景ID和空内容
+ int bgId = ResourceParser.getDefaultBgId(context);
+ String snippet = "";
+
+ // 创建打开便签编辑界面的Intent
+ Intent intent = new Intent(context, NoteEditActivity.class);
+ intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
+ intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
+ intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
+
+ // 获取与小部件关联的便签信息
+ Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
+ if (c != null && c.moveToFirst()) {
+ // 检查是否有多个便签关联到同一个小部件ID（异常情况）
+ if (c.getCount() > 1) {
+ Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
+ c.close();
+ return;
+ }
+
+ // 提取便签内容和背景颜色
+ snippet = c.getString(COLUMN_SNIPPET);
+ bgId = c.getInt(COLUMN_BG_COLOR_ID);
+ // 设置Intent参数，用于打开现有便签
+ intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
+ intent.setAction(Intent.ACTION_VIEW);
+ } else {
+ // 没有关联便签，设置默认提示文本
+ snippet = context.getResources().getString(R.string.widget_havenot_content);
+ // 设置Intent参数，用于创建新便签
+ intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+ }
+
+ // 关闭游标
+ if (c != null) {
+ c.close();
+ }
+
+ // 创建远程视图并设置背景
+ RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
+ rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
+ intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
+
+ /**
+ * 为小部件生成点击事件的PendingIntent
+ */
+ PendingIntent pendingIntent = null;
+ if (privacyMode) {
+ // 隐私模式下，显示提示文本，点击打开便签列表
+ rv.setTextViewText(R.id.widget_text,
+ context.getString(R.string.widget_under_visit_mode));
+ pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
+ context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
+ } else {
+ // 正常模式下，显示便签内容，点击打开便签编辑界面
+ rv.setTextViewText(R.id.widget_text, snippet);
+ pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
+ PendingIntent.FLAG_UPDATE_CURRENT);
+ }
+
+ // 设置点击事件
+ rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
+ // 更新小部件
+ appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
+ }
+ }
+ }
+
+ /**
+ * 获取背景资源ID
+ *
+ * 根据背景颜色ID获取对应的背景资源ID
+ * 子类需要实现此方法以提供不同尺寸小部件的背景资源
+ *
+ * @param bgId 背景颜色ID
+ * @return 对应的背景资源ID
+ */
+ protected abstract int getBgResourceId(int bgId);
+
+ /**
+ * 获取布局ID
+ *
+ * 子类需要实现此方法以提供不同尺寸小部件的布局资源
+ *
+ * @return 小部件布局资源ID
+ */
+ protected abstract int getLayoutId();
+
+ /**
+ * 获取小部件类型
+ *
+ * 子类需要实现此方法以提供小部件类型标识
+ *
+ * @return 小部件类型常量
+ */
+ protected abstract int getWidgetType();
+}
diff --git a/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_2x.java b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_2x.java
new file mode 100644
index 0000000..cffdb8f
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_2x.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteWidgetProvider_2x.java
+ * 描述: 2x尺寸便签小部件提供者实现类
+ * 作用: 提供2x尺寸的便签小部件功能，继承自NoteWidgetProvider基类
+ */
+package net.micode.notes.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Context;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.ResourceParser;
+
+/**
+ * 2x尺寸便签小部件提供者类
+ *
+ * 该类继承自NoteWidgetProvider，实现了2x尺寸便签小部件的具体功能。
+ * 2x尺寸是指Android桌面网格中占用2x2个单元格的小部件。
+ */
+public class NoteWidgetProvider_2x extends NoteWidgetProvider {
+ /**
+ * 当小部件更新时调用
+ *
+ * 系统会在小部件添加到桌面、系统启动或其他需要更新小部件时调用此方法
+ *
+ * @param context 上下文环境
+ * @param appWidgetManager 小部件管理器
+ * @param appWidgetIds 需要更新的小部件ID数组
+ */
+ @Override
+ public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+ // 调用父类的update方法更新小部件
+ super.update(context, appWidgetManager, appWidgetIds);
+ }
+
+ /**
+ * 获取小部件布局资源ID
+ *
+ * 实现父类的抽象方法，提供2x尺寸小部件的布局资源
+ *
+ * @return 2x小部件布局资源ID
+ */
+ @Override
+ protected int getLayoutId() {
+ return R.layout.widget_2x;
+ }
+
+ /**
+ * 获取小部件背景资源ID
+ *
+ * 实现父类的抽象方法，根据背景颜色ID获取对应的2x尺寸小部件背景资源
+ *
+ * @param bgId 背景颜色ID
+ * @return 对应的2x小部件背景资源ID
+ */
+ @Override
+ protected int getBgResourceId(int bgId) {
+ // 使用ResourceParser工具类获取2x小部件的背景资源
+ return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
+ }
+
+ /**
+ * 获取小部件类型
+ *
+ * 实现父类的抽象方法，提供2x小部件的类型标识
+ *
+ * @return 2x小部件类型常量
+ */
+ @Override
+ protected int getWidgetType() {
+ return Notes.TYPE_WIDGET_2X;
+ }
+}
diff --git a/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_4x.java b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_4x.java
new file mode 100644
index 0000000..325f08b
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/widget/NoteWidgetProvider_4x.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * 文件: NoteWidgetProvider_4x.java
+ * 描述: 4x尺寸便签小部件提供者实现类
+ * 作用: 提供4x尺寸的便签小部件功能，继承自NoteWidgetProvider基类
+ */
+package net.micode.notes.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Context;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.ResourceParser;
+
+/**
+ * 4x尺寸便签小部件提供者类
+ *
+ * 该类继承自NoteWidgetProvider，实现了4x尺寸便签小部件的具体功能。
+ * 4x尺寸是指Android桌面网格中占用4x4个单元格的小部件，比2x尺寸更大，
+ * 可以显示更多的便签内容。
+ */
+public class NoteWidgetProvider_4x extends NoteWidgetProvider {
+ /**
+ * 当小部件更新时调用
+ *
+ * 系统会在小部件添加到桌面、系统启动或其他需要更新小部件时调用此方法
+ *
+ * @param context 上下文环境
+ * @param appWidgetManager 小部件管理器
+ * @param appWidgetIds 需要更新的小部件ID数组
+ */
+ @Override
+ public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+ // 调用父类的update方法更新小部件
+ super.update(context, appWidgetManager, appWidgetIds);
+ }
+
+ /**
+ * 获取小部件布局资源ID
+ *
+ * 实现父类的抽象方法，提供4x尺寸小部件的布局资源
+ *
+ * @return 4x小部件布局资源ID
+ */
+ protected int getLayoutId() {
+ return R.layout.widget_4x;
+ }
+
+ /**
+ * 获取小部件背景资源ID
+ *
+ * 实现父类的抽象方法，根据背景颜色ID获取对应的4x尺寸小部件背景资源
+ *
+ * @param bgId 背景颜色ID
+ * @return 对应的4x小部件背景资源ID
+ */
+ @Override
+ protected int getBgResourceId(int bgId) {
+ // 使用ResourceParser工具类获取4x小部件的背景资源
+ return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
+ }
+
+ /**
+ * 获取小部件类型
+ *
+ * 实现父类的抽象方法，提供4x小部件的类型标识
+ *
+ * @return 4x小部件类型常量
+ */
+ @Override
+ protected int getWidgetType() {
+ return Notes.TYPE_WIDGET_4X;
+ }
+}
diff --git a/app/src/main/res/color/primary_text_dark.xml b/app/src/main/res/color/primary_text_dark.xml
new file mode 100644
index 0000000..7c85459
--- /dev/null
+++ b/app/src/main/res/color/primary_text_dark.xml
@@ -0,0 +1,22 @@
+
+
+
+
+
+