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```java
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/*
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1.Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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2.Licensed under the Apache License, Version 2.0 (the "License");
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3.you may not use this file except in compliance with the License.
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4.You may obtain a copy of the License at
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*
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5.http://www.apache.org/licenses/LICENSE-2.0
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*
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6.Unless required by applicable law or agreed to in writing, software
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7.distributed under the License is distributed on an "AS IS" BASIS,
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8.WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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9.See the License for the specific language governing permissions and
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10.limitations under the License.
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*/
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package net.micode.notes.data; // 定义包名
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import android.net.Uri; // 引入 Uri 类，用于处理 URI（统一资源标识符）
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public class Notes { // 定义 Notes 类
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public static final String AUTHORITY = "micodenotes"; // 定义授权标识符
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public static final String TAG = "Notes"; // 定义标签用于日志记录
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public static final int TYPENOTE = 0; // 定义笔记类型常量（类型为笔记）
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public static final int TYPEFOLDER = 1; // 定义文件夹类型常量（类型为文件夹）
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public static final int TYPESYSTEM = 2; // 定义系统类型常量（类型为系统）
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/**
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* Following IDs are system folders' identifiers
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* {@link Notes#ID_ROOT_FOLDER } is default folder
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* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
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* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
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*/
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public static final int ID_ROOT_FOLDER = 0; // 系统文件夹的根文件夹 ID
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public static final int ID_TEMPARAY_FOLDER = -1; // 临时文件夹的 ID（用于没有文件夹的笔记）
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public static final int ID_CALL_RECORD_FOLDER = -2; // 通话记录文件夹的 ID
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public static final int ID_TRASH_FOLER = -3; // 回收站文件夹的 ID
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public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; // 提醒日期的 Intent 字段
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public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id"; // 背景颜色 ID 的 Intent 字段
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public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; // 小部件 ID 的 Intent 字段
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public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; // 小部件类型的 Intent 字段
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public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id"; // 文件夹 ID 的 Intent 字段
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public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; // 通话日期的 Intent 字段
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public static final int TYPE_WIDGET_INVALIDE = -1; // 小部件无效类型
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public static final int TYPE_WIDGET_2X = 0; // 小部件 2x 类型
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public static final int TYPE_WIDGET_4X = 1; // 小部件 4x 类型
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public static class DataConstants { // 定义数据常量类
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public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; // 文字笔记的内容类型常量
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public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; // 通话笔记的内容类型常量
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}
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/**
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* Uri to query all notes and folders
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*/
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public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note"); // 用于查询所有笔记和文件夹的 URI
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/**
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* Uri to query data
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*/
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public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data"); // 用于查询数据的 URI
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public interface NoteColumns { // 定义笔记相关列的接口
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/**
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* The unique ID for a row
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ID = "_id"; // 行的唯一 ID，类型为整型（long）
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/**
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* The parent's id for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String PARENT_ID = "parent_id"; // 笔记或文件夹的父级 ID，类型为整型（long）
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/**
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* Created data for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CREATED_DATE = "created_date"; // 创建日期，类型为整型（long）
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/**
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* Latest modified date
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String MODIFIED_DATE = "modified_date"; // 最新修改日期，类型为整型（long）
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/**
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* Alert date
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ALERTED_DATE = "alert_date"; // 提醒日期，类型为整型（long）
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/**
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* Folder's name or text content of note
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* <P> Type: TEXT </P>
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*/
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public static final String SNIPPET = "snippet"; // 文件夹的名称或笔记的文本内容，类型为文本
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/**
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* Note's widget id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String WIDGET_ID = "widget_id"; // 笔记的小部件 ID，类型为整型（long）
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/**
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* Note's widget type
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String WIDGET_TYPE = "widget_type"; // 笔记的小部件类型，类型为整型（long）
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/**
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* Note's background color's id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String BG_COLOR_ID = "bg_color_id"; // 笔记的背景颜色 ID，类型为整型（long）
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/**
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* For text note, it doesn't has attachment, for multi-media
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* note, it has at least one attachment
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* <P> Type: INTEGER </P>
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*/
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public static final String HAS_ATTACHMENT = "has_attachment"; // 笔记是否有附件，类型为整型
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/**
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* Folder's count of notes
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String NOTES_COUNT = "notes_count"; // 文件夹中的笔记数量，类型为整型（long）
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/**
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* The file type: folder or note
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* <P> Type: INTEGER </P>
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*/
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public static final String TYPE = "type"; // 文件类型：文件夹或笔记，类型为整型
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/**
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* The last sync id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String SYNC_ID = "sync_id"; // 最后同步 ID，类型为整型（long）
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/**
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* Sign to indicate local modified or not
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* <P> Type: INTEGER </P>
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*/
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public static final String LOCAL_MODIFIED = "local_modified"; // 标识本地是否有修改，类型为整型
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/**
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* Original parent id before moving into temporary folder
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* <P> Type : INTEGER </P>
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*/
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public static final String ORIGIN_PARENT_ID = "origin_parent_id"; // 原始父级 ID（在移动到临时文件夹之前），类型为整型
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/**
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* The gtask id
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* <P> Type : TEXT </P>
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*/
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public static final String GTASK_ID = "gtask_id"; // Google 任务 ID，类型为文本
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/**
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* The version code
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* <P> Type : INTEGER (long) </P>
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*/
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public static final String VERSION = "version"; // 版本号，类型为整型（long）
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}
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public interface DataColumns { // 定义数据相关列的接口
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/**
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* The unique ID for a row
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ID = "_id"; // 行的唯一 ID，类型为整型（long）
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/**
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* The MIME type of the item represented by this row.
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* <P> Type: Text </P>
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*/
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public static final String MIME_TYPE = "mime_type"; // MIME 类型，类型为文本
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/**
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* The reference id to note that this data belongs to
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String NOTE_ID = "note_id"; // 该数据所属的笔记的 ID，类型为整型（long）
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/**
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* Created data for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public
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