main
“zsy” 10 months ago
parent 7a872471ad
commit 51c2f4c9d0

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/*
* 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.data; // 包声明
import android.content.Context; // 导入上下文
import android.database.Cursor; // 导入游标
import android.provider.ContactsContract.CommonDataKinds.Phone; // 导入电话数据类
import android.provider.ContactsContract.Data; // 导入数据类
import android.telephony.PhoneNumberUtils; // 导入电话号码工具
import android.util.Log; // 导入日志
import java.util.HashMap; // 导入哈希表
// 联系人类
public class Contact {
private static HashMap<String, String> sContactCache; // 联系人缓存
private static final String TAG = "Contact"; // 日志标签
// 呼叫者ID选择条件
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
+ " AND " + Data.RAW_CONTACT_ID + " IN "
+ "(SELECT raw_contact_id "
+ " FROM phone_lookup"
+ " WHERE min_match = '+')";
// 获取联系人名称
public static String getContact(Context context, String phoneNumber) {
// 初始化联系人缓存
if(sContactCache == null) {
sContactCache = new HashMap<String, String>(); // 创建新缓存
}
// 如果缓存中已有联系人,直接返回
if(sContactCache.containsKey(phoneNumber)) {
return sContactCache.get(phoneNumber); // 从缓存中获取联系人
}
// 替换选择条件中的“+”符号
String selection = CALLER_ID_SELECTION.replace("+",
PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); // 更新选择条件
// 查询联系人数据
Cursor cursor = context.getContentResolver().query(
Data.CONTENT_URI, // 内容URI
new String [] { Phone.DISPLAY_NAME }, // 查询的列
selection, // 选择条件
new String[] { phoneNumber }, // 选择参数
null); // 排序
// 处理查询结果
if (cursor != null && cursor.moveToFirst()) {
try {
String name = cursor.getString(0); // 获取联系人名称
sContactCache.put(phoneNumber, name); // 将名称存入缓存
return name; // 返回联系人名称
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, " Cursor get string error " + e.toString()); // 处理索引错误
return null; // 返回null
} finally {
cursor.close(); // 关闭游标
}
} else {
Log.d(TAG, "No contact matched with number:" + phoneNumber); // 无匹配联系人
return null; // 返回null
}
}
}

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/*
* 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.data; // 包声明
import android.net.Uri; // 导入URI类
// 笔记类
public class Notes {
public static final String AUTHORITY = "micode_notes"; // 权限标识
public static final String TAG = "Notes"; // 日志标签
public static final int TYPE_NOTE = 0; // 笔记类型
public static final int TYPE_FOLDER = 1; // 文件夹类型
public static final int TYPE_SYSTEM = 2; // 系统类型
/**
* ID
* {@link Notes#ID_ROOT_FOLDER}
* {@link Notes#ID_TEMPARAY_FOLDER}
* {@link Notes#ID_CALL_RECORD_FOLDER}
*/
public static final int ID_ROOT_FOLDER = 0; // 根文件夹ID
public static final int ID_TEMPARAY_FOLDER = -1; // 临时文件夹ID
public static final int ID_CALL_RECORD_FOLDER = -2; // 通话记录夹ID
public static final int ID_TRASH_FOLER = -3; // 垃圾文件夹ID
// Intent额外参数
public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; // 警报日期
public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id"; // 背景颜色ID
public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; // 小部件ID
public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; // 小部件类型
public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id"; // 文件夹ID
public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; // 通话日期
public static final int TYPE_WIDGET_INVALIDE = -1; // 无效小部件类型
public static final int TYPE_WIDGET_2X = 0; // 2x小部件类型
public static final int TYPE_WIDGET_4X = 1; // 4x小部件类型
// 数据常量类
public static class DataConstants {
public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; // 笔记类型
public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; // 通话记录类型
}
/**
* URI
*/
public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note"); // 笔记URI
/**
* URI
*/
public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data"); // 数据URI
// 笔记列接口
public interface NoteColumns {
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String ID = "_id"; // ID列
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String PARENT_ID = "parent_id"; // 父ID列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String CREATED_DATE = "created_date"; // 创建日期列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String MODIFIED_DATE = "modified_date"; // 修改日期列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String ALERTED_DATE = "alert_date"; // 警报日期列
/**
*
* <P> : TEXT </P>
*/
public static final String SNIPPET = "snippet"; // 笔记内容列
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String WIDGET_ID = "widget_id"; // 小部件ID列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String WIDGET_TYPE = "widget_type"; // 小部件类型列
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String BG_COLOR_ID = "bg_color_id"; // 背景颜色ID列
/**
*
* <P> : INTEGER </P>
*/
public static final String HAS_ATTACHMENT = "has_attachment"; // 附件列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String NOTES_COUNT = "notes_count"; // 笔记数量列
/**
* :
* <P> : INTEGER </P>
*/
public static final String TYPE = "type"; // 类型列
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String SYNC_ID = "sync_id"; // 同步ID列
/**
*
* <P> : INTEGER </P>
*/
public static final String LOCAL_MODIFIED = "local_modified"; // 本地修改标记列
/**
* ID
* <P> : INTEGER </P>
*/
public static final String ORIGIN_PARENT_ID = "origin_parent_id"; // 原父ID列
/**
* gtask ID
* <P> : TEXT </P>
*/
public static final String GTASK_ID = "gtask_id"; // gtask ID列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String VERSION = "version"; // 版本列
}
// 数据列接口
public interface DataColumns {
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String ID = "_id"; // ID列
/**
* MIME
* <P> : Text </P>
*/
public static final String MIME_TYPE = "mime_type"; // MIME类型列
/**
* ID
* <P> : INTEGER (long) </P>
*/
public static final String NOTE_ID = "note_id"; // 笔记ID列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String CREATED_DATE = "created_date"; // 创建日期列
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String MODIFIED_DATE = "modified_date"; // 修改日期列
/**
*
* <P> : TEXT </P>
*/
public static final String CONTENT = "content"; // 内容列
/**
* {@link #MIMETYPE} 使
*
* <P> : INTEGER </P>
*/
public static final String DATA1 = "data1"; // 数据列1
/**
* {@link #MIMETYPE} 使
*
* <P> : INTEGER </P>
*/
public static final String DATA2 = "data2"; // 数据列2
/**
* {@link #MIMETYPE} 使
*
* <P> : TEXT </P>
*/
public static final String DATA3 = "data3"; // 数据列3
/**
* {@link #MIMETYPE} 使
*
* <P> : TEXT </P>
*/
public static final String DATA4 = "data4"; // 数据列4
/**
* {@link #MIMETYPE} 使
*
* <P> : TEXT </P>
*/
public static final String DATA5 = "data5"; // 数据列5
}
// 文本笔记类
public static final class TextNote implements DataColumns {
/**
*
* <P> : Integer 1: 0: </P>
*/
public static final String MODE = DATA1; // 模式列
public static final int MODE_CHECK_LIST = 1; // 检查列表模式标记
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; // 内容类型
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note"; // 项目内容类型
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note"); // 文本笔记URI
}
// 通话记录类
public static final class CallNote implements DataColumns {
/**
*
* <P> : INTEGER (long) </P>
*/
public static final String CALL_DATE = DATA1; // 通话日期列
/**
*
* <P> : TEXT </P>
*/
public static final String PHONE_NUMBER = DATA3; // 电话号码列
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note"; // 内容类型
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note"; // 项目内容类型
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note"); // 通话记录URI
}
}

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/*
* 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.data;
import android.content.ContentValues; // 导入内容值类
import android.content.Context; // 导入上下文类
import android.database.sqlite.SQLiteDatabase; // 导入SQLite数据库类
import android.database.sqlite.SQLiteOpenHelper; // 导入SQLiteOpenHelper类
import android.util.Log; // 导入日志类
import net.micode.notes.data.Notes.DataColumns; // 导入数据列类
import net.micode.notes.data.Notes.DataConstants; // 导入数据常量类
import net.micode.notes.data.Notes.NoteColumns; // 导入笔记列类
// 笔记数据库帮助类
public class NotesDatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "note.db"; // 数据库名字
private static final int DB_VERSION = 4; // 数据库版本号
// 表名接口
public interface TABLE {
public static final String NOTE = "note"; // 笔记表名
public static final String DATA = "data"; // 数据表名
}
private static final String TAG = "NotesDatabaseHelper"; // 日志标签
private static NotesDatabaseHelper mInstance; // 单例实例
// 创建笔记表的 SQL 语句
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
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 ''" +
")";
// 创建数据表的 NOTE_ID 索引的 SQL 语句
private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
"CREATE INDEX IF NOT EXISTS note_id_index ON " +
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";
// 增加文件夹笔记计数的触发器 SQL 语句
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";
// 减少文件夹笔记计数的触发器 SQL 语句
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";
// 插入新笔记时增加文件夹笔记计数的触发器 SQL 语句
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";
// 从文件夹中删除笔记时减少文件夹笔记计数的触发器 SQL 语句
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";
// 插入数据时更新笔记内容的触发器 SQL 语句
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";
// 更新数据时更新笔记内容的触发器 SQL 语句
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";
// 删除数据时更新笔记内容的触发器 SQL 语句
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";
// 删除已删除笔记的数据的触发器 SQL 语句
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";
// 删除已删除文件夹中的笔记的触发器 SQL 语句
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";
// 移动到回收站文件夹的笔记的触发器 SQL 语句
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
public NotesDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION); // 调用父类构造函数
}
// 创建笔记表
public void createNoteTable(SQLiteDatabase db) {
db.execSQL(CREATE_NOTE_TABLE_SQL); // 执行创建笔记表的 SQL
reCreateNoteTableTriggers(db); // 重新创建笔记表触发器
createSystemFolder(db); // 创建系统文件夹
Log.d(TAG, "note table has been created"); // 打印日志
}
// 重新创建笔记表触发器
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash"); // 删除触发器
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); // 创建触发器
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); // 创建触发器
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER); // 创建触发器
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER); // 创建触发器
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER); // 创建触发器
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER); // 创建触发器
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER); // 创建触发器
}
// 创建系统文件夹
private void createSystemFolder(SQLiteDatabase db) {
ContentValues values = new ContentValues(); // 创建内容值对象
// 通话记录文件夹的记录
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 系统类型
db.insert(TABLE.NOTE, null, values); // 插入到笔记表
// 默认根文件夹
values.clear(); // 清空内容值对象
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 系统类型
db.insert(TABLE.NOTE, null, values); // 插入到笔记表
// 临时文件夹用于移动笔记
values.clear(); // 清空内容值对象
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 系统类型
db.insert(TABLE.NOTE, null, values); // 插入到笔记表
// 创建回收站文件夹
values.clear(); // 清空内容值对象
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 系统类型
db.insert(TABLE.NOTE, null, values); // 插入到笔记表
}
// 创建数据表
public void createDataTable(SQLiteDatabase db) {
db.execSQL(CREATE_DATA_TABLE_SQL); // 执行创建数据表的 SQL
reCreateDataTableTriggers(db); // 重新创建数据表触发器
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); // 创建数据表索引
Log.d(TAG, "data table has been created"); // 打印日志
}
// 重新创建数据表触发器
private void reCreateDataTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update"); // 删除触发器
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete"); // 删除触发器
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER); // 创建触发器
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER); // 创建触发器
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER); // 创建触发器
}
// 获取单例实例
static synchronized NotesDatabaseHelper getInstance(Context context) {
if (mInstance == null) { // 如果实例为空
mInstance = new NotesDatabaseHelper(context); // 创建新实例
}
return mInstance; // 返回实例
}
@Override
public void onCreate(SQLiteDatabase db) {
createNoteTable(db); // 创建笔记表
createDataTable(db); // 创建数据表
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
boolean reCreateTriggers = false; // 触发器是否需要重建
boolean skipV2 = false; // 是否跳过 V2 升级
if (oldVersion == 1) {
upgradeToV2(db); // 升级到 V2
skipV2 = true; // 标记为跳过 V2 升级
oldVersion++; // 增加版本号
}
if (oldVersion == 2 && !skipV2) {
upgradeToV3(db); // 升级到 V3
reCreateTriggers = true; // 标记为需要重建触发器
oldVersion++; // 增加版本号
}
if (oldVersion == 3) {
upgradeToV4(db); // 升级到 V4
oldVersion++; // 增加版本号
}
if (reCreateTriggers) {
reCreateNoteTableTriggers(db); // 重新创建笔记表触发器
reCreateDataTableTriggers(db); // 重新创建数据表触发器
}
if (oldVersion != newVersion) {
throw new IllegalStateException("Upgrade notes database to version " + newVersion
+ " fails"); // 抛出异常
}
}
// 升级到 V2
private void upgradeToV2(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE); // 删除笔记表
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA); // 删除数据表
createNoteTable(db); // 创建笔记表
createDataTable(db); // 创建数据表
}
// 升级到 V3
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 gtask 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(); // 创建内容值对象
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); // 设置文件夹 ID
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 系统类型
db.insert(TABLE.NOTE, null, values); // 插入到笔记表
}
// 升级到 V4
private void upgradeToV4(SQLiteDatabase db) {
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
+ " INTEGER NOT NULL DEFAULT 0"); // 添加版本列
}
}

@ -0,0 +1,384 @@
/*
* 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 android.accounts.Account; // 导入账户类
import android.accounts.AccountManager; // 导入账户管理类
import android.app.ActionBar; // 导入动作栏类
import android.app.AlertDialog; // 导入警告对话框类
import android.content.BroadcastReceiver; // 导入广播接收器类
import android.content.ContentValues; // 导入内容值类
import android.content.Context; // 导入上下文类
import android.content.DialogInterface; // 导入对话框接口类
import android.content.Intent; // 导入意图类
import android.content.IntentFilter; // 导入意图过滤器类
import android.content.SharedPreferences; // 导入共享偏好类
import android.os.Bundle; // 导入捆绑类
import android.preference.Preference; // 导入偏好类
import android.preference.Preference.OnPreferenceClickListener; // 导入偏好点击监听器
import android.preference.PreferenceActivity; // 导入偏好活动类
import android.preference.PreferenceCategory; // 导入偏好类别类
import android.text.TextUtils; // 导入文本工具类
import android.text.format.DateFormat; // 导入日期格式化类
import android.view.LayoutInflater; // 导入布局填充器类
import android.view.Menu; // 导入菜单类
import android.view.MenuItem; // 导入菜单项类
import android.view.View; // 导入视图类
import android.widget.Button; // 导入按钮类
import android.widget.TextView; // 导入文本视图类
import android.widget.Toast; // 导入吐司类
import net.micode.notes.R; // 导入资源类
import net.micode.notes.data.Notes; // 导入笔记数据类
import net.micode.notes.data.Notes.NoteColumns; // 导入笔记列类
import net.micode.notes.gtask.remote.GTaskSyncService; // 导入GTask同步服务类
public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences"; // 偏好名称
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name"; // 同步账户名称偏好键
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time"; // 最后同步时间偏好键
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear"; // 背景颜色偏好键
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; // 同步账户偏好键
private static final String AUTHORITIES_FILTER_KEY = "authorities"; // 权限过滤键
private PreferenceCategory mAccountCategory; // 账户类别
private GTaskReceiver mReceiver; // GTask接收器
private Account[] mOriAccounts; // 原始账户数组
private boolean mHasAddedAccount; // 是否添加账户标志
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
// 使用应用图标进行导航
getActionBar().setDisplayHomeAsUpEnabled(true);
addPreferencesFromResource(R.xml.preferences); // 从资源加载偏好设置
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY); // 查找账户类别
mReceiver = new GTaskReceiver(); // 初始化GTask接收器
IntentFilter filter = new IntentFilter(); // 创建意图过滤器
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); // 添加GTask服务广播名称
registerReceiver(mReceiver, filter); // 注册接收器
mOriAccounts = null; // 初始化原始账户
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null); // 填充设置头部视图
getListView().addHeaderView(header, null, true); // 添加头部视图
}
@Override
protected void onResume() {
super.onResume();
// 如果用户添加了新账户,则需要自动设置同步账户
if (mHasAddedAccount) {
Account[] accounts = getGoogleAccounts(); // 获取Google账户
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
for (Account accountNew : accounts) {
boolean found = false; // 标志账户是否找到
for (Account accountOld : mOriAccounts) {
if (TextUtils.equals(accountOld.name, accountNew.name)) {
found = true; // 找到账户
break;
}
}
if (!found) {
setSyncAccount(accountNew.name); // 设置同步账户
break; // 退出循环
}
}
}
}
refreshUI(); // 刷新用户界面
}
@Override
protected void onDestroy() {
if (mReceiver != null) {
unregisterReceiver(mReceiver); // 注销接收器
}
super.onDestroy();
}
private void loadAccountPreference() {
mAccountCategory.removeAll(); // 移除所有账户偏好设置
Preference accountPref = new Preference(this); // 创建账户偏好设置
final String defaultAccount = getSyncAccountName(this); // 获取同步账户名称
accountPref.setTitle(getString(R.string.preferences_account_title)); // 设置标题
accountPref.setSummary(getString(R.string.preferences_account_summary)); // 设置摘要
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() { // 设置点击监听器
public boolean onPreferenceClick(Preference preference) {
if (!GTaskSyncService.isSyncing()) { // 如果没有正在同步
if (TextUtils.isEmpty(defaultAccount)) {
// 第一次设置账户
showSelectAccountAlertDialog(); // 显示选择账户对话框
} else {
// 如果账户已经设置,需要提醒用户风险
showChangeAccountConfirmAlertDialog(); // 显示更改账户确认对话框
}
} else {
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) // 显示不能更改账户的提示
.show();
}
return true; // 返回true表示事件已处理
}
});
mAccountCategory.addPreference(accountPref); // 添加账户偏好设置
}
private void loadSyncButton() {
Button syncButton = (Button) findViewById(R.id.preference_sync_button); // 获取同步按钮
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview); // 获取最后同步时间视图
// 设置按钮状态
if (GTaskSyncService.isSyncing()) {
syncButton.setText(getString(R.string.preferences_button_sync_cancel)); // 设置按钮文本为取消同步
syncButton.setOnClickListener(new View.OnClickListener() { // 设置点击监听器
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this); // 取消同步
}
});
} else {
syncButton.setText(getString(R.string.preferences_button_sync_immediately)); // 设置按钮文本为立即同步
syncButton.setOnClickListener(new View.OnClickListener() { // 设置点击监听器
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this); // 开始同步
}
});
}
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this))); // 设置按钮是否可用
// 设置最后同步时间
if (GTaskSyncService.isSyncing()) {
lastSyncTimeView.setText(GTaskSyncService.getProgressString()); // 显示同步状态
lastSyncTimeView.setVisibility(View.VISIBLE); // 显示最后同步时间视图
} else {
long lastSyncTime = getLastSyncTime(this); // 获取最后同步时间
if (lastSyncTime != 0) {
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
DateFormat.format(getString(R.string.preferences_last_sync_time_format),
lastSyncTime))); // 显示格式化的最后同步时间
lastSyncTimeView.setVisibility(View.VISIBLE); // 显示最后同步时间视图
} else {
lastSyncTimeView.setVisibility(View.GONE); // 隐藏最后同步时间视图
}
}
}
private void refreshUI() {
loadAccountPreference(); // 加载账户偏好设置
loadSyncButton(); // 加载同步按钮
}
private void showSelectAccountAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); // 创建对话框构建器
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); // 填充对话框标题视图
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); // 获取标题文本视图
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title)); // 设置标题文本
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); // 获取副标题文本视图
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); // 设置副标题文本
dialogBuilder.setCustomTitle(titleView); // 设置自定义标题
dialogBuilder.setPositiveButton(null, null); // 设置正面按钮
Account[] accounts = getGoogleAccounts(); // 获取Google账户
String defAccount = getSyncAccountName(this); // 获取同步账户名称
mOriAccounts = accounts; // 保存原始账户
mHasAddedAccount = false; // 重置添加账户标志
if (accounts.length > 0) {
CharSequence[] items = new CharSequence[accounts.length]; // 创建账户名称数组
final CharSequence[] itemMapping = items; // 保存账户名称映射
int checkedItem = -1; // 选中项索引
int index = 0; // 数组索引
for (Account account : accounts) {
if (TextUtils.equals(account.name, defAccount)) {
checkedItem = index; // 如果是默认账户设置checkedItem
}
items[index++] = account.name; // 添加账户名称
}
dialogBuilder.setSingleChoiceItems(items, checkedItem, // 设置单选项
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
setSyncAccount(itemMapping[which].toString()); // 设置同步账户
dialog.dismiss(); // 关闭对话框
refreshUI(); // 刷新用户界面
}
});
}
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null); // 填充添加账户视图
dialogBuilder.setView(addAccountView); // 设置对话框视图
final AlertDialog dialog = dialogBuilder.show(); // 显示对话框
addAccountView.setOnClickListener(new View.OnClickListener() { // 设置点击监听器
public void onClick(View v) {
mHasAddedAccount = true; // 设置添加账户标志
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS"); // 创建添加账户意图
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls" // 添加权限过滤
});
startActivityForResult(intent, -1); // 启动添加账户活动
dialog.dismiss(); // 关闭对话框
}
});
}
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); // 创建对话框构建器
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); // 填充对话框标题视图
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); // 获取标题文本视图
titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
getSyncAccountName(this))); // 设置标题文本
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); // 获取副标题文本视图
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg)); // 设置副标题文本
dialogBuilder.setCustomTitle(titleView); // 设置自定义标题
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account), // 更改账户
getString(R.string.preferences_menu_remove_account), // 移除账户
getString(R.string.preferences_menu_cancel) // 取消
};
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() { // 设置对话框项
public void onClick(DialogInterface dialog, int which) {
if (which == 0) {
showSelectAccountAlertDialog(); // 显示选择账户对话框
} else if (which == 1) {
removeSyncAccount(); // 移除同步账户
refreshUI(); // 刷新用户界面
}
}
});
dialogBuilder.show(); // 显示对话框
}
private Account[] getGoogleAccounts() {
AccountManager accountManager = AccountManager.get(this); // 获取账户管理器
return accountManager.getAccountsByType("com.google"); // 返回Google账户
}
private void setSyncAccount(String account) {
if (!getSyncAccountName(this).equals(account)) {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); // 获取共享偏好设置
SharedPreferences.Editor editor = settings.edit(); // 创建编辑器
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); // 设置同步账户名称
} else {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); // 清空同步账户名称
}
editor.commit(); // 提交更改
// 清除最后同步时间
setLastSyncTime(this, 0);
// 清除本地GTask相关信息
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues(); // 创建内容值
values.put(NoteColumns.GTASK_ID, ""); // 清空GTASK_ID
values.put(NoteColumns.SYNC_ID, 0); // 清空SYNC_ID
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); // 更新笔记内容
}
}).start();
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account), // 显示设置成功的提示
Toast.LENGTH_SHORT).show();
}
}
private void removeSyncAccount() {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); // 获取共享偏好设置
SharedPreferences.Editor editor = settings.edit(); // 创建编辑器
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME); // 移除同步账户名称
}
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME); // 移除最后同步时间
}
editor.commit(); // 提交更改
// 清除本地GTask相关信息
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues(); // 创建内容值
values.put(NoteColumns.GTASK_ID, ""); // 清空GTASK_ID
values.put(NoteColumns.SYNC_ID, 0); // 清空SYNC_ID
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); // 更新笔记内容
}
}).start();
}
public static String getSyncAccountName(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE); // 获取共享偏好设置
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); // 返回同步账户名称
}
public static void setLastSyncTime(Context context, long time) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE); // 获取共享偏好设置
SharedPreferences.Editor editor = settings.edit(); // 创建编辑器
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time); // 设置最后同步时间
editor.commit(); // 提交更改
}
public static long getLastSyncTime(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE); // 获取共享偏好设置
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); // 返回最后同步时间
}
private class GTaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
refreshUI(); // 刷新用户界面
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview); // 获取同步状态视图
syncStatus.setText(intent
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG)); // 显示同步进度信息
}
}
}
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent intent = new Intent(this, NotesListActivity.class); // 创建返回笔记列表的意图
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // 清除顶部活动
startActivity(intent); // 启动活动
return true; // 返回true表示事件已处理
default:
return false; // 返回false表示未处理事件
}
}
}

@ -0,0 +1,303 @@
/*
* 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.data; // 包声明
import android.app.SearchManager; // 导入搜索管理器
import android.content.ContentProvider; // 导入内容提供者
import android.content.ContentUris; // 导入内容URI
import android.content.ContentValues; // 导入内容值
import android.content.Intent; // 导入意图
import android.content.UriMatcher; // 导入URI匹配器
import android.database.Cursor; // 导入游标
import android.database.sqlite.SQLiteDatabase; // 导入SQLite数据库
import android.net.Uri; // 导入URI
import android.text.TextUtils; // 导入文本工具
import android.util.Log; // 导入日志
import net.micode.notes.R; // 导入资源
import net.micode.notes.data.Notes.DataColumns; // 导入数据列
import net.micode.notes.data.Notes.NoteColumns; // 导入笔记列
import net.micode.notes.data.NotesDatabaseHelper.TABLE; // 导入数据库表
// 笔记提供者类
public class NotesProvider extends ContentProvider {
private static final UriMatcher mMatcher; // URI匹配器
private NotesDatabaseHelper mHelper; // 数据库助手
private static final String TAG = "NotesProvider"; // 日志标签
// URI常量
private static final int URI_NOTE = 1; // 笔记URI
private static final int URI_NOTE_ITEM = 2; // 单个笔记URI
private static final int URI_DATA = 3; // 数据URI
private static final int URI_DATA_ITEM = 4; // 单个数据URI
private static final int URI_SEARCH = 5; // 搜索URI
private static final int URI_SEARCH_SUGGEST = 6; // 搜索建议URI
// 静态代码块初始化URI匹配器
static {
mMatcher = new UriMatcher(UriMatcher.NO_MATCH); // 创建URI匹配器
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE); // 添加笔记URI
mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM); // 添加单个笔记URI
mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA); // 添加数据URI
mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM); // 添加单个数据URI
mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH); // 添加搜索URI
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST); // 添加搜索建议URI
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST); // 添加搜索建议URI
}
// 搜索投影常量
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; // 搜索结果投影
// 笔记片段搜索查询
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;
@Override
public boolean onCreate() {
mHelper = NotesDatabaseHelper.getInstance(getContext()); // 获取数据库助手实例
return true; // 返回创建成功
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
Cursor c = null; // 游标
SQLiteDatabase db = mHelper.getReadableDatabase(); // 获取可读数据库
String id = null; // ID
switch (mMatcher.match(uri)) { // 根据URI匹配
case URI_NOTE:
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
sortOrder); // 查询笔记
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1); // 获取笔记ID
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder); // 查询单个笔记
break;
case URI_DATA:
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
sortOrder); // 查询数据
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1); // 获取数据ID
c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder); // 查询单个数据
break;
case URI_SEARCH:
case URI_SEARCH_SUGGEST:
// 对搜索和建议的特殊处理
if (sortOrder != null || projection != null) {
throw new IllegalArgumentException(
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
}
String searchString = null; // 搜索字符串
if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
if (uri.getPathSegments().size() > 1) {
searchString = uri.getPathSegments().get(1); // 获取搜索字符串
}
} else {
searchString = uri.getQueryParameter("pattern"); // 获取查询参数
}
if (TextUtils.isEmpty(searchString)) {
return null; // 如果搜索字符串为空返回null
}
try {
searchString = String.format("%%%s%%", searchString); // 格式化搜索字符串
c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
new String[] { searchString }); // 执行原始查询
} catch (IllegalStateException ex) {
Log.e(TAG, "got exception: " + ex.toString()); // 处理异常
}
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri); // 处理未知URI
}
if (c != null) {
c.setNotificationUri(getContext().getContentResolver(), uri); // 设置通知URI
}
return c; // 返回游标
}
@Override
public Uri insert(Uri uri, ContentValues values) {
SQLiteDatabase db = mHelper.getWritableDatabase(); // 获取可写数据库
long dataId = 0, noteId = 0, insertedId = 0; // 初始化ID
switch (mMatcher.match(uri)) { // 根据URI匹配
case URI_NOTE:
insertedId = noteId = db.insert(TABLE.NOTE, null, values); // 插入笔记
break;
case URI_DATA:
if (values.containsKey(DataColumns.NOTE_ID)) {
noteId = values.getAsLong(DataColumns.NOTE_ID); // 获取笔记ID
} else {
Log.d(TAG, "Wrong data format without note id:" + values.toString()); // 处理错误
}
insertedId = dataId = db.insert(TABLE.DATA, null, values); // 插入数据
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri); // 处理未知URI
}
// 通知笔记URI
if (noteId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null); // 通知更改
}
// 通知数据URI
if (dataId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null); // 通知更改
}
return ContentUris.withAppendedId(uri, insertedId); // 返回插入的URI
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
int count = 0; // 删除计数
String id = null; // ID
SQLiteDatabase db = mHelper.getWritableDatabase(); // 获取可写数据库
boolean deleteData = false; // 是否删除数据
switch (mMatcher.match(uri)) { // 根据URI匹配
case URI_NOTE:
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 "; // 构造选择条件
count = db.delete(TABLE.NOTE, selection, selectionArgs); // 删除笔记
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1); // 获取笔记ID
// ID小于0的系统文件夹不允许删除
long noteId = Long.valueOf(id); // 转换ID
if (noteId <= 0) {
break; // 如果ID无效跳过
}
count = db.delete(TABLE.NOTE,
NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs); // 删除单个笔记
break;
case URI_DATA:
count = db.delete(TABLE.DATA, selection, selectionArgs); // 删除数据
deleteData = true; // 标记为删除数据
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1); // 获取数据ID
count = db.delete(TABLE.DATA,
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs); // 删除单个数据
deleteData = true; // 标记为删除数据
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri); // 处理未知URI
}
if (count > 0) {
if (deleteData) {
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); // 通知笔记URI更改
}
getContext().getContentResolver().notifyChange(uri, null); // 通知URI更改
}
return count; // 返回删除计数
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
int count = 0; // 更新计数
String id = null; // ID
SQLiteDatabase db = mHelper.getWritableDatabase(); // 获取可写数据库
boolean updateData = false; // 是否更新数据
switch (mMatcher.match(uri)) { // 根据URI匹配
case URI_NOTE:
increaseNoteVersion(-1, selection, selectionArgs); // 增加笔记版本
count = db.update(TABLE.NOTE, values, selection, selectionArgs); // 更新笔记
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1); // 获取笔记ID
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs); // 增加笔记版本
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs); // 更新单个笔记
break;
case URI_DATA:
count = db.update(TABLE.DATA, values, selection, selectionArgs); // 更新数据
updateData = true; // 标记为更新数据
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1); // 获取数据ID
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs); // 更新单个数据
updateData = true; // 标记为更新数据
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri); // 处理未知URI
}
if (count > 0) {
if (updateData) {
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); // 通知笔记URI更改
}
getContext().getContentResolver().notifyChange(uri, null); // 通知URI更改
}
return count; // 返回更新计数
}
// 解析选择条件
private String parseSelection(String selection) {
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); // 返回解析后的选择
}
// 增加笔记版本
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
StringBuilder sql = new StringBuilder(120); // SQL构建器
sql.append("UPDATE "); // 更新语句
sql.append(TABLE.NOTE); // 指定表
sql.append(" SET ");
sql.append(NoteColumns.VERSION);
sql.append("=" + NoteColumns.VERSION + "+1 "); // 增加版本
if (id > 0 || !TextUtils.isEmpty(selection)) {
sql.append(" WHERE "); // 添加WHERE条件
}
if (id > 0) {
sql.append(NoteColumns.ID + "=" + String.valueOf(id)); // 指定ID
}
if (!TextUtils.isEmpty(selection)) {
String selectString = id > 0 ? parseSelection(selection) : selection; // 选择条件
for (String args : selectionArgs) {
selectString = selectString.replaceFirst("\\?", args); // 替换参数
}
sql.append(selectString); // 添加选择条件
}
mHelper.getWritableDatabase().execSQL(sql.toString()); // 执行SQL语句
}
@Override
public String getType(Uri uri) {
// TODO Auto-generated method stub
return null; // 返回null
}
}
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