From 6534cf9a3c8b368e05ed6067a379e5a1a46f1860 Mon Sep 17 00:00:00 2001 From: guoxinyao <3096410458@QQ.com> Date: Sun, 22 Sep 2024 13:59:54 +0800 Subject: [PATCH 1/2] xiaomi --- xiaomi.txt | 1 + 1 file changed, 1 insertion(+) create mode 100644 xiaomi.txt diff --git a/xiaomi.txt b/xiaomi.txt new file mode 100644 index 0000000..63306e3 --- /dev/null +++ b/xiaomi.txt @@ -0,0 +1 @@ +xiaomibianqian \ No newline at end of file From 3f0dfaa99627f145c78c2a55269a77a5a22f13b3 Mon Sep 17 00:00:00 2001 From: guoxinyao <3096410458@QQ.com> Date: Tue, 15 Oct 2024 20:19:09 +0800 Subject: [PATCH 2/2] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E6=B3=A8=E9=87=8A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Contact.java | 87 ++++++++++ Notes.java | 280 ++++++++++++++++++++++++++++++++ NotesDatabaseHelper.java | 342 +++++++++++++++++++++++++++++++++++++++ NotesProvider.java | 295 +++++++++++++++++++++++++++++++++ 4 files changed, 1004 insertions(+) create mode 100644 Contact.java create mode 100644 Notes.java create mode 100644 NotesDatabaseHelper.java create mode 100644 NotesProvider.java diff --git a/Contact.java b/Contact.java new file mode 100644 index 0000000..f2b94da --- /dev/null +++ b/Contact.java @@ -0,0 +1,87 @@ +/* + * 版权所有 (c) 2010-2011,MiCode 开源社区 (www.micode.net) + * + * 根据 Apache 许可证第 2.0 版(“许可证”)许可; + * 您不能使用此文件,除非遵守该许可证。 + * 您可以在以下网址获得许可证副本: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 除非适用法律要求或书面同意,否则根据许可证分发的软件是按“原样”提供的, + * 不附带任何明示或暗示的担保或条件。 + * 有关许可证下的权限和限制,请参见许可证。 + */ + +package net.micode.notes.data; // 声明包名,表示这是联系人数据的包 + +import android.content.Context; // 导入 Context 类,以访问应用程序的环境 +import android.database.Cursor; // 导入 Cursor 类,用于操作数据库查询结果 +import android.provider.ContactsContract.CommonDataKinds.Phone; // 导入 Phone 类,以访问联系人电话数据 +import android.provider.ContactsContract.Data; // 导入 Data 类,以访问联系人数据 +import android.telephony.PhoneNumberUtils; // 导入 PhoneNumberUtils 类,以提供电话相关的实用方法 +import android.util.Log; // 导入 Log 类,用于记录日志信息 + +import java.util.HashMap; // 导入 HashMap 类,用于存储联系人信息的缓存 + +public class Contact { + private static HashMap sContactCache; // 静态 HashMap,用于缓存电话号码和对应的联系人名称 + private static final String TAG = "Contact"; // 日志标签,用于标识日志信息 + + // 用于通过电话号码查询联系人的 SQL 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 = '+')"; + + /** + * 根据提供的电话号码获取联系人的显示名称。 + * @param context 用于访问内容解析器的上下文。 + * @param phoneNumber 要检索的联系人的电话号码。 + * @return 联系人的显示名称,如果未找到则返回 null。 + */ + public static String getContact(Context context, String phoneNumber) { + // 检查缓存是否为空,如果为空,则初始化缓存 + if(sContactCache == null) { + sContactCache = new HashMap(); // 创建一个新的 HashMap 以缓存联系人信息 + } + + // 检查缓存中是否已经存在该电话号码的联系人名称 + if(sContactCache.containsKey(phoneNumber)) { + return sContactCache.get(phoneNumber); // 如果存在,直接返回缓存中的联系人名称 + } + + // 替换选择条件中的占位符 '+' 为电话号码的最小匹配格式 + String selection = CALLER_ID_SELECTION.replace("+", + PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); + + // 查询联系人数据 + Cursor cursor = context.getContentResolver().query( + Data.CONTENT_URI, // 查询的内容 URI + new String[] { Phone.DISPLAY_NAME }, // 要返回的列,这里只返回联系人名称 + selection, // 选择条件 + new String[] { phoneNumber }, // 查询参数(电话号码) + null); // 附加查询选项,通常为 null + + // 检查 Cursor 是否不为空且有结果 + if (cursor != null && cursor.moveToFirst()) { + try { + // 获取查询结果中的联系人名称 + String name = cursor.getString(0); // 从 Cursor 中获取第一个字段,即联系人名称 + sContactCache.put(phoneNumber, name); // 将获取到的联系人名称存入缓存 + return name; // 返回联系人名称 + } catch (IndexOutOfBoundsException e) { + // 处理索引超出范围异常 + Log.e(TAG, "Cursor get string error " + e.toString()); // 记录错误日志 + return null; // 返回 null + } finally { + cursor.close(); // 确保 Cursor 在使用后关闭,以释放资源 + } + } else { + // 如果没有找到匹配的联系人,记录调试信息 + Log.d(TAG, "No contact matched with number:" + phoneNumber); + return null; // 返回 null + } + } +} diff --git a/Notes.java b/Notes.java new file mode 100644 index 0000000..c8bef7f --- /dev/null +++ b/Notes.java @@ -0,0 +1,280 @@ +/* + * 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.net.Uri; + +public class Notes { + // 内容提供者的唯一标识符 + public static final String AUTHORITY = "micode_notes"; + public static final String TAG = "Notes"; // 日志标记 + 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 + + /** + * 系统文件夹的标识符 + * {@link Notes#ID_ROOT_FOLDER} 是默认文件夹 + * {@link Notes#ID_TEMPARAY_FOLDER} 是存放无文件夹的笔记 + * {@link Notes#ID_CALL_RECORD_FOLDER} 是存放通话记录的文件夹 + */ + 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; // 通话记录文件夹ID + public static final int ID_TRASH_FOLER = -3; // 垃圾箱文件夹ID + + // Intent附加数据的键值 + public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; // 提醒日期 + 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 + + public static class DataConstants { + // 数据项的 MIME 类型 + public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; // 笔记的 MIME 类型 + public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; // 通话记录的 MIME 类型 + } + + /** + * 查询所有笔记和文件夹的 URI + */ + public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note"); + + /** + * 查询数据的 URI + */ + public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data"); + + public interface NoteColumns { + /** + * 表中每行的唯一 ID + *

类型: INTEGER (long)

+ */ + public static final String ID = "_id"; + + /** + * 笔记或文件夹的父级 ID + *

类型: INTEGER (long)

+ */ + public static final String PARENT_ID = "parent_id"; + + /** + * 笔记或文件夹的创建日期 + *

类型: INTEGER (long)

+ */ + public static final String CREATED_DATE = "created_date"; + + /** + * 最新的修改日期 + *

类型: INTEGER (long)

+ */ + public static final String MODIFIED_DATE = "modified_date"; + + /** + * 提醒日期 + *

类型: INTEGER (long)

+ */ + public static final String ALERTED_DATE = "alert_date"; + + /** + * 文件夹的名称或笔记的文本内容 + *

类型: TEXT

+ */ + public static final String SNIPPET = "snippet"; + + /** + * 笔记的小部件 ID + *

类型: INTEGER (long)

+ */ + public static final String WIDGET_ID = "widget_id"; + + /** + * 笔记的小部件类型 + *

类型: INTEGER (long)

+ */ + public static final String WIDGET_TYPE = "widget_type"; + + /** + * 笔记的背景颜色 ID + *

类型: INTEGER (long)

+ */ + public static final String BG_COLOR_ID = "bg_color_id"; + + /** + * 指示是否有附件 + *

对于文本笔记,没有附件,对于多媒体笔记,至少有一个附件

+ *

类型: INTEGER

+ */ + public static final String HAS_ATTACHMENT = "has_attachment"; + + /** + * 文件夹中的笔记数量 + *

类型: INTEGER (long)

+ */ + public static final String NOTES_COUNT = "notes_count"; + + /** + * 文件的类型: 文件夹或笔记 + *

类型: INTEGER

+ */ + public static final String TYPE = "type"; + + /** + * 最后同步的 ID + *

类型: INTEGER (long)

+ */ + public static final String LAST_SYNC_ID = "last_sync_id"; // 最后同步 ID + } +} +/** + * 表示本地是否已修改的标志 + *

类型: INTEGER

+ */ +public static final String LOCAL_MODIFIED = "local_modified"; + +/** + * 移动到临时文件夹之前的原始父级 ID + *

类型 : INTEGER

+ */ +public static final String ORIGIN_PARENT_ID = "origin_parent_id"; + +/** + * gtask 的 ID + *

类型 : TEXT

+ */ +public static final String GTASK_ID = "gtask_id"; + +/** + * 版本代码 + *

类型 : INTEGER (long)

+ */ +public static final String VERSION = "version"; +} + +public interface DataColumns { + /** + * 表中每行的唯一 ID + *

类型: INTEGER (long)

+ */ + public static final String ID = "_id"; + + /** + * 表示该行所代表项目的 MIME 类型。 + *

类型: TEXT

+ */ + public static final String MIME_TYPE = "mime_type"; + + /** + * 此数据所属笔记的引用 ID + *

类型: INTEGER (long)

+ */ + public static final String NOTE_ID = "note_id"; + + /** + * 笔记或文件夹的创建日期 + *

类型: INTEGER (long)

+ */ + public static final String CREATED_DATE = "created_date"; + + /** + * 最新修改日期 + *

类型: INTEGER (long)

+ */ + public static final String MODIFIED_DATE = "modified_date"; + + /** + * 数据的内容 + *

类型: TEXT

+ */ + public static final String CONTENT = "content"; + + /** + * 通用数据列,其含义取决于 {@link #MIME_TYPE},用于 + * 整数数据类型 + *

类型: INTEGER

+ */ + public static final String DATA1 = "data1"; + + /** + * 通用数据列,其含义取决于 {@link #MIME_TYPE},用于 + * 整数数据类型 + *

类型: INTEGER

+ */ + public static final String DATA2 = "data2"; + + /** + * 通用数据列,其含义取决于 {@link #MIME_TYPE},用于 + * 文本数据类型 + *

类型: TEXT

+ */ + public static final String DATA3 = "data3"; + + /** + * 通用数据列,其含义取决于 {@link #MIME_TYPE},用于 + * 文本数据类型 + *

类型: TEXT

+ */ + public static final String DATA4 = "data4"; + + /** + * 通用数据列,其含义取决于 {@link #MIME_TYPE},用于 + * 文本数据类型 + *

类型: TEXT

+ */ + public static final String DATA5 = "data5"; +} + +public static final class TextNote implements DataColumns { + /** + * 指示文本是否处于检查列表模式 + *

类型: Integer 1:检查列表模式 0:正常模式

+ */ + public static final String MODE = DATA1; + + public static final int MODE_CHECK_LIST = 1; // 检查列表模式的常量值 + + public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; // 文本笔记的内容类型 + + public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note"; // 单个文本笔记的内容项类型 + + public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note"); // 查询文本笔记的 URI +} + +public static final class CallNote implements DataColumns { + /** + * 此记录的通话日期 + *

类型: INTEGER (long)

+ */ + public static final String CALL_DATE = DATA1; + + /** + * 此记录的电话号码 + *

类型: TEXT

+ */ + public static final String PHONE_NUMBER = DATA3; + + public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note"; // 通话记录的内容类型 + + public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note"; // 单个通话记录的内容项类型 + + public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note"); // 查询通话记录的 URI +} diff --git a/NotesDatabaseHelper.java b/NotesDatabaseHelper.java new file mode 100644 index 0000000..df7ffaf --- /dev/null +++ b/NotesDatabaseHelper.java @@ -0,0 +1,342 @@ +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; + +public class NotesDatabaseHelper extends SQLiteOpenHelper { + private static final String DB_NAME = "note.db"; // 数据库名称 + + private static final int DB_VERSION = 4; // 数据库版本号 + + public interface TABLE { + public static final String NOTE = "note"; // 笔记表的名称 + + public static final String DATA = "data"; // 数据表的名称 + } + + 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," + // 笔记ID,主键 + NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 父级ID + NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," + // 提醒日期 + NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," + // 背景颜色ID + NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建日期 + NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," + // 是否有附件 + NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 修改日期 + NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," + // 笔记计数 + NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," + // 笔记摘要 + NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," + // 笔记类型 + NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," + // 小部件ID + NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," + // 小部件类型 + NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," + // 同步ID + NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," + // 本地修改标志 + NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 原始父级ID + NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," + // Google任务ID + NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" + // 版本号 + ")"; + + // 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," + // 数据ID,主键 + DataColumns.MIME_TYPE + " TEXT NOT NULL," + // MIME类型 + DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," + // 关联的笔记ID + NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建日期 + NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 修改日期 + DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," + // 内容 + DataColumns.DATA1 + " INTEGER," + // 数据字段1 + DataColumns.DATA2 + " INTEGER," + // 数据字段2 + DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," + // 数据字段3 + DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," + // 数据字段4 + DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" + // 数据字段5 + ")"; + + // 创建数据表的NOTE_ID索引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 + ");"; // 为NOTE_ID创建索引 + + /** + * 在将笔记移动到文件夹时增加文件夹的笔记计数 + */ + 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"; + + /** + * 当笔记从文件夹中移动时减少文件夹的笔记计数 + */ + 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"; + + /** + * 在向文件夹中插入新笔记时增加文件夹的笔记计数 + */ + 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"; + + /** + * 从文件夹中删除笔记时减少文件夹的笔记计数 + */ + 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"; + + /** + * 在插入类型为 {@link DataConstants#NOTE} 的数据时更新笔记内容 + */ + 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"; + + /** + * 当类型为 {@link DataConstants#NOTE} 的数据发生更改时更新笔记内容 + */ + 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"; + + /** + * 当类型为 {@link DataConstants#NOTE} 的数据被删除时更新笔记内容 + */ +private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER = + "CREATE TRIGGER update_note_content_on_delete " + + " AFTER delete ON " + TABLE.DATA + // 当数据表中有数据被删除后触发 + " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + // 仅当删除的数据类型为NOTE时触发 + " BEGIN" + + " UPDATE " + TABLE.NOTE + // 更新笔记表 + " SET " + NoteColumns.SNIPPET + "=''" + // 将笔记摘要设置为空 + " WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" + // 根据被删除数据的NOTE_ID查找对应笔记 + " END"; + + /** + * 删除与已删除笔记关联的数据 + */ + private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER = + "CREATE TRIGGER delete_data_on_delete " + + " AFTER DELETE ON " + TABLE.NOTE + // 当笔记表中的数据被删除后触发 + " BEGIN" + + " DELETE FROM " + TABLE.DATA + // 从数据表中删除关联的数据 + " WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" + // 根据已删除笔记的ID进行删除 + " END"; + + /** + * 删除与已删除文件夹关联的笔记 + */ + private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER = + "CREATE TRIGGER folder_delete_notes_on_delete " + + " AFTER DELETE ON " + TABLE.NOTE + // 当笔记表中的数据被删除后触发 + " BEGIN" + + " DELETE FROM " + TABLE.NOTE + // 从笔记表中删除关联的笔记 + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + // 根据已删除文件夹的ID进行删除 + " END"; + + /** + * 将属于已移至垃圾箱文件夹的笔记移动到垃圾箱 + */ + private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER = + "CREATE TRIGGER folder_move_notes_on_trash " + + " AFTER UPDATE ON " + TABLE.NOTE + // 当笔记表中的数据更新后触发 + " WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + // 当新父级ID为垃圾箱ID时触发 + " BEGIN" + + " UPDATE " + TABLE.NOTE + // 更新笔记表 + " SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + // 将父级ID设置为垃圾箱ID + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + // 更新与已移除的文件夹ID相关的笔记 + " END"; + + // NotesDatabaseHelper构造函数,初始化数据库帮助器 + public NotesDatabaseHelper(Context context) { + super(context, DB_NAME, null, DB_VERSION); // 调用父类构造函数,设置数据库名称和版本 + } + + // 创建笔记表的方法 + public void createNoteTable(SQLiteDatabase db) { + db.execSQL(CREATE_NOTE_TABLE_SQL); // 执行创建笔记表的SQL语句 + reCreateNoteTableTriggers(db); // 重新创建与笔记表相关的触发器 + createSystemFolder(db); // 创建系统文件夹 + Log.d(TAG, "note table has been created"); // 打印日志,指示笔记表已创建 + } +private void reCreateNoteTableTriggers(SQLiteDatabase db) { + // 删除已存在的触发器,防止重复创建 + 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); +} +private void createSystemFolder(SQLiteDatabase db) { + ContentValues values = new ContentValues(); + + /** + * call record folder for call notes + */ + values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER); + values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); + db.insert(TABLE.NOTE, null, values); // 插入通话记录文件夹 + + /** + * root folder which is default folder + */ + values.clear(); // 清空之前的内容 + values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER); + values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); + db.insert(TABLE.NOTE, null, values); // 插入根文件夹 + + /** + * temporary folder which is used for moving note + */ + values.clear(); + values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER); + values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); + db.insert(TABLE.NOTE, null, values); // 插入临时文件夹 + + /** + * create trash folder + */ + values.clear(); + values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); + values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); + db.insert(TABLE.NOTE, null, values); // 插入垃圾箱文件夹 +} +public void createDataTable(SQLiteDatabase db) { + db.execSQL(CREATE_DATA_TABLE_SQL); // 执行创建数据表的SQL语句 + reCreateDataTableTriggers(db); // 重新创建与数据表相关的触发器 + db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); // 创建数据表中NOTE_ID的索引 + Log.d(TAG, "data table has been created"); // 打印日志,指示数据表已创建 +} +private void reCreateDataTableTriggers(SQLiteDatabase db) { + 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); +} +static synchronized NotesDatabaseHelper getInstance(Context context) { + if (mInstance == null) { + mInstance = new NotesDatabaseHelper(context); // 如果实例不存在,则创建新实例 + } + return mInstance; // 返回单例实例 +} +@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; // 标记是否需要重新创建触发器 + boolean skipV2 = false; // 标记是否跳过v2升级 + + if (oldVersion == 1) { + upgradeToV2(db); // 升级到版本2 + skipV2 = true; // 设置为跳过v2的标记 + oldVersion++; + } + + if (oldVersion == 2 && !skipV2) { + upgradeToV3(db); // 升级到版本3 + reCreateTriggers = true; // 设置为需要重新创建触发器 + oldVersion++; + } + + if (oldVersion == 3) { + upgradeToV4(db); // 升级到版本4 + oldVersion++; + } + + if (reCreateTriggers) { + reCreateNoteTableTriggers(db); // 重新创建与笔记表相关的触发器 + reCreateDataTableTriggers(db); // 重新创建与数据表相关的触发器 + } + + // 如果旧版本不等于新版本,抛出异常 + if (oldVersion != newVersion) { + throw new IllegalStateException("Upgrade notes database to version " + newVersion + " fails"); + } +} +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); // 重新创建笔记表 + createDataTable(db); // 重新创建数据表 +} +private void upgradeToV3(SQLiteDatabase db) { + // drop unused triggers + 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"); + + // add a column for gtask id + db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''"); + + // add a trash system folder + 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); // 插入垃圾箱文件夹 +} +private void upgradeToV4(SQLiteDatabase db) { + db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0"); +} diff --git a/NotesProvider.java b/NotesProvider.java new file mode 100644 index 0000000..fe02760 --- /dev/null +++ b/NotesProvider.java @@ -0,0 +1,295 @@ +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; + +public class NotesProvider extends ContentProvider { + // 定义 UriMatcher 以匹配不同的 URI + private static final UriMatcher mMatcher; + + // 数据库帮助类的实例 + private NotesDatabaseHelper mHelper; + + private static final String TAG = "NotesProvider"; // 日志标签 + + // 定义 URI 常量 + private static final int URI_NOTE = 1; // 笔记 URI + private static final int URI_NOTE_ITEM = 2; // 单个笔记项 URI + private static final int URI_DATA = 3; // 数据 URI + private static final int URI_DATA_ITEM = 4; // 单个数据项 URI + + private static final int URI_SEARCH = 5; // 搜索 URI + private static final int URI_SEARCH_SUGGEST = 6; // 搜索建议 URI + + // 静态初始化块,初始化 UriMatcher + static { + mMatcher = new UriMatcher(UriMatcher.NO_MATCH); + mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE); // 匹配笔记 URI + mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM); // 匹配单个笔记项 URI + mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA); // 匹配数据 URI + mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM); // 匹配单个数据项 URI + mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH); // 匹配搜索 URI + mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST); // 匹配搜索建议 URI + mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST); // 匹配带参数的搜索建议 URI + } + + /** + * x'0A' 表示 SQLite 中的换行符 '\n'。对于搜索结果中的标题和内容, + * 我们将修剪 '\n' 和空白,以显示更多信息。 + */ + 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; + + // 用于搜索笔记的 SQL 查询语句 + private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION + + " FROM " + TABLE.NOTE // 从笔记表中选择 + + " WHERE " + NoteColumns.SNIPPET + " LIKE ?" // 根据摘要搜索 + + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER // 排除垃圾箱中的笔记 + + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE; // 确保笔记类型是常规笔记 +@Override +public boolean onCreate() { + // 初始化数据库助手 + mHelper = NotesDatabaseHelper.getInstance(getContext()); + return true; // 返回成功创建 +} + +@Override +public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, + String sortOrder) { + Cursor c = null; // 声明游标 + SQLiteDatabase db = mHelper.getReadableDatabase(); // 获取可读数据库 + String id = null; // 声明 ID 变量 + + // 根据 URI 匹配执行不同的查询 + switch (mMatcher.match(uri)) { + case URI_NOTE: // 查询所有笔记 + c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null, + sortOrder); + break; + case URI_NOTE_ITEM: // 查询单个笔记项 + id = uri.getPathSegments().get(1); // 获取 URI 中的 ID + c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id + + parseSelection(selection), selectionArgs, null, null, sortOrder); + break; + case URI_DATA: // 查询所有数据 + 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); // 获取 URI 中的 ID + c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id + + parseSelection(selection), selectionArgs, null, null, sortOrder); + break; + case URI_SEARCH: // 搜索笔记 + case URI_SEARCH_SUGGEST: // 搜索建议 + // 不允许同时指定排序、选择、选择参数或投影 + if (sortOrder != null || projection != null) { + throw new IllegalArgumentException( + "do not specify sortOrder, selection, selectionArgs, or projection" + "with this query"); + } + + String searchString = null; // 声明搜索字符串 + if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) { + // 获取搜索建议中的搜索字符串 + if (uri.getPathSegments().size() > 1) { + searchString = uri.getPathSegments().get(1); + } + } else { + // 获取查询参数中的模式 + searchString = uri.getQueryParameter("pattern"); + } + + // 如果搜索字符串为空,返回 null + if (TextUtils.isEmpty(searchString)) { + return null; + } + + try { + // 格式化搜索字符串以用于 LIKE 查询 + searchString = String.format("%%%s%%", searchString); + 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()); // 记录异常 + } + break; + default: + throw new IllegalArgumentException("Unknown URI " + uri); // 未知 URI 异常 + } + + // 设置通知 URI + if (c != null) { + c.setNotificationUri(getContext().getContentResolver(), uri); + } + return c; // 返回结果游标 +} + +@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; // 声明 ID 变量 + switch (mMatcher.match(uri)) { + case URI_NOTE: // 插入新笔记 + insertedId = noteId = db.insert(TABLE.NOTE, null, values); + break; + case URI_DATA: // 插入新数据 + if (values.containsKey(DataColumns.NOTE_ID)) { // 确保包含笔记 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); // 未知 URI 异常 + } + + // 通知笔记 URI 更新 + if (noteId > 0) { + getContext().getContentResolver().notifyChange( + ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null); + } + + // 通知数据 URI 更新 + if (dataId > 0) { + getContext().getContentResolver().notifyChange( + ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null); + } + + return ContentUris.withAppendedId(uri, insertedId); // 返回插入的 URI +} +@Override +public int delete(Uri uri, String selection, String[] selectionArgs) { + int count = 0; // 记录受影响行数 + String id = null; // 声明 ID 字符串 + SQLiteDatabase db = mHelper.getWritableDatabase(); // 获取可写数据库 + boolean deleteData = false; // 是否删除数据项标志 + + switch (mMatcher.match(uri)) { + case URI_NOTE: // 删除所有笔记 + selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 "; // 添加限制条件 + count = db.delete(TABLE.NOTE, selection, selectionArgs); // 执行删除操作 + break; + case URI_NOTE_ITEM: // 删除单个笔记项 + id = uri.getPathSegments().get(1); // 获取 URI 中的 ID + long noteId = Long.valueOf(id); + if (noteId <= 0) { // 系统文件夹 ID 小于等于 0,不允许删除 + break; + } + count = db.delete(TABLE.NOTE, NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs); + break; + case URI_DATA: // 删除所有数据 + count = db.delete(TABLE.DATA, selection, selectionArgs); // 执行删除操作 + deleteData = true; + break; + case URI_DATA_ITEM: // 删除单个数据项 + id = uri.getPathSegments().get(1); // 获取 URI 中的 ID + count = db.delete(TABLE.DATA, DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs); + deleteData = true; + break; + default: + throw new IllegalArgumentException("Unknown URI " + uri); // 未知 URI 异常 + } + + if (count > 0) { + if (deleteData) { // 如果删除了数据项,通知笔记 URI 更新 + getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); + } + getContext().getContentResolver().notifyChange(uri, null); // 通知 URI 更新 + } + return count; // 返回受影响行数 +} + +@Override +public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { + int count = 0; // 记录受影响行数 + String id = null; // 声明 ID 字符串 + SQLiteDatabase db = mHelper.getWritableDatabase(); // 获取可写数据库 + boolean updateData = false; // 是否更新数据项标志 + + switch (mMatcher.match(uri)) { + case URI_NOTE: // 更新所有笔记 + increaseNoteVersion(-1, selection, selectionArgs); // 增加笔记版本号 + count = db.update(TABLE.NOTE, values, selection, selectionArgs); // 执行更新操作 + break; + case URI_NOTE_ITEM: // 更新单个笔记项 + id = uri.getPathSegments().get(1); // 获取 URI 中的 ID + increaseNoteVersion(Long.valueOf(id), selection, selectionArgs); // 根据 ID 增加笔记版本号 + count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id + + parseSelection(selection), selectionArgs); // 执行更新操作 + break; + case URI_DATA: // 更新所有数据 + count = db.update(TABLE.DATA, values, selection, selectionArgs); // 执行更新操作 + updateData = true; + break; + case URI_DATA_ITEM: // 更新单个数据项 + id = uri.getPathSegments().get(1); // 获取 URI 中的 ID + count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id + + parseSelection(selection), selectionArgs); // 执行更新操作 + updateData = true; + break; + default: + throw new IllegalArgumentException("Unknown URI " + uri); // 未知 URI 异常 + } + + if (count > 0) { + if (updateData) { // 如果更新了数据项,通知笔记 URI 更新 + getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); + } + getContext().getContentResolver().notifyChange(uri, null); // 通知 URI 更新 + } + return count; // 返回受影响行数 +} + +private String parseSelection(String selection) { + return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); // 解析限制条件 +} + +private void increaseNoteVersion(long id, String selection, String[] selectionArgs) { + StringBuilder sql = new StringBuilder(120); // 构建 SQL 语句 + sql.append("UPDATE "); // 更新操作 + sql.append(TABLE.NOTE); // 笔记表 + sql.append(" SET "); + sql.append(NoteColumns.VERSION); // 增加版本号操作 + sql.append("=" + NoteColumns.VERSION + "+1 "); + + if (id > 0 || !TextUtils.isEmpty(selection)) { // 如果指定了 ID 或选择条件,添加限制条件 + sql.append(" WHERE "); + } + if (id > 0) { + sql.append(NoteColumns.ID + "=" + String.valueOf(id)); // 添加 ID 等于指定值的限制 + } + if (!TextUtils.isEmpty(selection)) { + String selectString = id > 0 ? parseSelection(selection) : selection; // 解析限制条件 + for (String args : selectionArgs) { + selectString = selectString.replaceFirst("\\?", args); // 替换参数中的占位符 + } + sql.append(selectString); // 添加限制条件 + } + + mHelper.getWritableDatabase().execSQL(sql.toString()); // 执行 SQL 语句 +} + +@Override +public String getType(Uri uri) { + return null; // 返回类型为 null +}