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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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package net.micode.notes.data;
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/*uri是统一资源标志符（Uniform Resource Identifier），而在这个类中定义了各种Uri常量，
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以便在其他的类中调用。Uri用处很多，涉及到安卓权限，比如通过Uri可以：
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直接拨打电话、调出拨打电话界面、调WEB浏览器、卸载、安装、播放、调用发邮件、直接发邮件等系统功能
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Android上可用的每种资源 -包括 图像、视频片段、音频资源等都可以用Uri来表示*/
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import android.net.Uri;
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public class Notes {
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/*便签数据库,该类主要实现了对便签的相关属性包括：Anthority, Tag，以及数据，联系人的信息进行保存管理，
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其中主要实现了对若干属性的定义，并创建了DataColumns，DataColumns接口的定义，该两个接口可用于其余类的实现，
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在便签管理中实现TextNote,CallNote两个类，用于对便签内容的保存。*/
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public static final String AUTHORITY = "micode_notes";//定义了一个权限名，这里是为了符合Uri的格式而定义的。
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public static final String TAG = "Notes";//定义该类的名称
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public static final int TYPE_NOTE = 0;//Note的类型，这里规定了三种；普通Note，
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public static final int TYPE_FOLDER = 1;//文件夹Folder，
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public static final int TYPE_SYSTEM = 2;//系统文件System
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/**
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* Following IDs are system folders' identifiers（下列ID是系统文件的标识）
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* {@link Notes#ID_ROOT_FOLDER } is default folder（根目录（默认文件夹））
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* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder（临时文件夹）
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* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records（通话记录文件夹）
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* {@link Notes#ID_TRASH_FOLER}（垃圾文件夹）
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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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//下列是各个文件夹名称标识，定义各种小部件（widget）
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public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
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public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
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public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
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public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
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public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
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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;//定义查询便签和文件夹的指针
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public static final int TYPE_WIDGET_2X = 0;//2*2小部件
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public static final int TYPE_WIDGET_4X = 1;//4*4小部件
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public static class DataConstants {
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//存放textnotes和callnotes地址
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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（统一资源标识符查询便签和文件夹）
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*/
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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（统一资源标识符查询数据）
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*/
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public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
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public interface NoteColumns {
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//定义NoteColumns的常量,用于后面创建数据库的表头，定义Note的一系列属性
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/**
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* The unique ID for a row（主键）
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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";//父节点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";//更新日期
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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";//更改日期
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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";//是否有附件
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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";//最后一次的同步id
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/**
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* Sign to indicate（显示） local modified or not（本地是否修改过标识）
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* <P> Type: INTEGER </P>
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*/
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public static final String LOCAL_MODIFIED = "local_modified";//本地是否修改过
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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";//父节点id在移到临时文件夹之前
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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";//后台任务的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";//版本号
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}
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public interface DataColumns {
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//定义DataColumns的常量,用于后面创建数据库的表头。主要是定义存储便签数据内容
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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";//每一行id
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/**
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* The MIME type of the item represented by this row.（这行代表的mime类型）
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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类型能包含视频、图像、文本、音频、应用程序等数据
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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";//标签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";//创建时间
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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";//修改时间
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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";//内容
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/*以下定义了五个常量*/
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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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//文本标签实现DataColumns接口，继承上述所有常量
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/*模式指示文本是否处于检查列表模式
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1：检查列表模式，0：正常模式*/
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/**
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* Mode to indicate the text in check list mode or not
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* <P> Type: Integer 1:check list mode 0: normal mode </P>
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*/
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public static final String MODE = DATA1;//继承DATA1
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public static final int MODE_CHECK_LIST = 1;//1：检查列表模式
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";//内容类型
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";//内容项目的类型
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");//content 的索引标识符
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}
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public static final class CallNote implements DataColumns {
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//记录通话数据的表头
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/**
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* Call date for this record
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CALL_DATE = DATA1;//通话日期
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/**
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* Phone number for this record
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* <P> Type: TEXT </P>
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*/
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public static final String PHONE_NUMBER = DATA3;//电话号码
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public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";//内容类型
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public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";//内容项目类型
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");//content 的索引标识符
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}
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}
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