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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//统一标识常量等 便于之后的引用管理
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package net.micode.notes.data;
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//URI在Android中提供了一种统一的方式来标识和访问各种资源，促使应用程序之间更容易共享数据，并支持在应用程序内部和之间进行交互
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import android.net.Uri;
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public class Notes {
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//定义了很多常量
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public static final String AUTHORITY = "micode_notes";
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public static final String TAG = "Notes";
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public static final int TYPE_NOTE = 0;
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public static final int TYPE_FOLDER = 1;
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public static final int TYPE_SYSTEM = 2;
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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;
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public static final int ID_TEMPARAY_FOLDER = -1;
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public static final int ID_CALL_RECORD_FOLDER = -2;
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public static final int ID_TRASH_FOLER = -3;
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// 用于在Intent中传递 提醒日期 的键
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public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
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// 用于在Intent中传递 背景颜色ID 的键
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public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
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// 用于在Intent中传递 小部件ID 的键
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public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
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// 用于在Intent中传递 小部件类型 的键
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public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
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// 用于在Intent中传递 文件夹ID 的键
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public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
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// 用于在Intent中传递 通话日期 的键
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public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
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public static final int TYPE_WIDGET_INVALIDE = -1;
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public static final int TYPE_WIDGET_2X = 0;
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public static final int TYPE_WIDGET_4X = 1;
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//这些常量提供了一种在代码中引用特定数据类型的标准化方式。通过在 DataConstants 内部定义这些常量，可以方便地在应用程序的其他地方引用它们，而不必直接使用字符串字面量，从而提高了代码的可读性和可维护性
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public static class DataConstants {
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public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
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public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
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}
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/**
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* Uri to query all notes and folders
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*查询所有笔记和文件夹的Uri
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*/
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//定义查询便签和文件夹的指针
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public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
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/**
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* Uri to query data
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*查询数据的Uri
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*/
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//定义查找数据的指针
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public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
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// 定义NoteColumns的常量,用于后面创建数据库的表头
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//标准化定义一些常量便于之后的管理运用
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public interface NoteColumns {
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/**
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* The unique ID for a row 行
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ID = "_id";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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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";
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}
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// 定义DataColumns的常量,用于后面创建数据库的表头
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public interface DataColumns {
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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";
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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";
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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";
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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";
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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";
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/**
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* Data's content
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* <P> Type: TEXT </P>
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*/
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public static final String CONTENT = "content";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
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* integer data type
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* <P> Type: INTEGER </P>
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*/
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public static final String DATA1 = "data1";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
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* integer data type
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* <P> Type: INTEGER </P>
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*/
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public static final String DATA2 = "data2";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA3 = "data3";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA4 = "data4";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA5 = "data5";
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}
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public static final class TextNote implements DataColumns {
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/**
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* Mode to indicate the text in check list mode or not
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* 指示文本是否处于检查列表模式的模式。
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* <P> Type: Integer 1:check list mode 0: normal mode </P>
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*/
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// 不同模式的常量
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public static final int MODE_CHECK_LIST = 1;
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// 整个文本笔记集合的内容类型
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
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// 文本笔记集合中单个项的内容类型
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
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// 用于访问文本笔记集合的内容URI
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
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}
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public static final class CallNote implements DataColumns {//implements DataColumns: 这表示 CallNote 类实现了一个接口 DataColumns。通过实现 DataColumns 接口，CallNote 类获得了接口中定义的方法和常量。
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/**
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* Call date for this record
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* 通话记录的通话日期
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CALL_DATE = DATA1;
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/**
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* Phone number for this record
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*通话记录的电话号码
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* <P> Type: TEXT </P>
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*/
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public static final String PHONE_NUMBER = DATA3;
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// 整个通话笔记集合的内容类型
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
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// 通话笔记集合中单个项的内容类型
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
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// 用于访问通话笔记集合的内容URI
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
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}
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}
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