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@ -1,3 +1,4 @@
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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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@ -15,6 +16,7 @@
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*/
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package net.micode.notes.model;
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import android.content.ContentProviderOperation;
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import android.content.ContentProviderResult;
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import android.content.ContentUris;
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@ -33,16 +35,26 @@ import net.micode.notes.data.Notes.TextNote;
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import java.util.ArrayList;
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/**
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* Note类用于管理笔记数据,包括笔记的基本信息和相关数据(如文本内容、通话记录)。
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*/
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public class Note {
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// 存储笔记基本信息的变更值
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private ContentValues mNoteDiffValues;
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// 管理笔记相关数据(文本和通话记录)
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private NoteData mNoteData;
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private static final String TAG = "Note";
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/**
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* Create a new note id for adding a new note to databases
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* 创建一个新的笔记ID并在数据库中添加一条笔记记录
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*
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* @param context 应用上下文
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* @param folderId 父文件夹ID
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* @return 新创建的笔记ID
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* @throws IllegalStateException 如果获取的笔记ID无效
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*/
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public static synchronized long getNewNoteId(Context context, long folderId) {
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// Create a new note in the database
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// 创建一个新的笔记记录
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ContentValues values = new ContentValues();
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long createdTime = System.currentTimeMillis();
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values.put(NoteColumns.CREATED_DATE, createdTime);
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@ -50,78 +62,136 @@ public class Note {
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values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
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values.put(NoteColumns.LOCAL_MODIFIED, 1);
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values.put(NoteColumns.PARENT_ID, folderId);
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// 插入笔记记录并获取URI
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Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
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long noteId = 0;
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try {
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// 从URI中提取笔记ID
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noteId = Long.valueOf(uri.getPathSegments().get(1));
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} catch (NumberFormatException e) {
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Log.e(TAG, "Get note id error :" + e.toString());
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Log.e(TAG, "获取笔记ID错误 :" + e.toString());
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noteId = 0;
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}
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// 检查笔记ID的有效性
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if (noteId == -1) {
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throw new IllegalStateException("Wrong note id:" + noteId);
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throw new IllegalStateException("错误的笔记ID:" + noteId);
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}
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return noteId;
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}
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/**
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* 构造函数,初始化笔记对象
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*/
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public Note() {
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mNoteDiffValues = new ContentValues();
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mNoteData = new NoteData();
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}
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/**
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* 设置笔记的基本信息
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*
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* @param key 键名
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* @param value 值
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*/
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public void setNoteValue(String key, String value) {
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mNoteDiffValues.put(key, value);
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// 标记笔记已修改,并更新修改时间
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}
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/**
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* 设置笔记的文本内容
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*
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* @param key 键名
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* @param value 值
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*/
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public void setTextData(String key, String value) {
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mNoteData.setTextData(key, value);
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}
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/**
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* 设置文本内容的ID
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*
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* @param id 文本内容ID
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*/
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public void setTextDataId(long id) {
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mNoteData.setTextDataId(id);
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}
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/**
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* 获取文本内容的ID
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*
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* @return 文本内容ID
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*/
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public long getTextDataId() {
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return mNoteData.mTextDataId;
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}
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/**
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* 设置通话记录的ID
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*
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* @param id 通话记录ID
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*/
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public void setCallDataId(long id) {
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mNoteData.setCallDataId(id);
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}
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/**
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* 设置通话记录数据
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*
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* @param key 键名
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* @param value 值
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*/
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public void setCallData(String key, String value) {
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mNoteData.setCallData(key, value);
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}
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/**
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* 检查笔记是否有本地修改
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*
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* @return 如果有修改返回true,否则返回false
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*/
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public boolean isLocalModified() {
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return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
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}
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/**
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* 将笔记同步到数据库
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*
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* @param context 应用上下文
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* @param noteId 笔记ID
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* @return 同步成功返回true,失败返回false
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* @throws IllegalArgumentException 如果笔记ID无效
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*/
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public boolean syncNote(Context context, long noteId) {
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// 检查笔记ID的有效性
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if (noteId <= 0) {
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throw new IllegalArgumentException("Wrong note id:" + noteId);
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throw new IllegalArgumentException("错误的笔记ID:" + noteId);
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}
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// 如果没有修改,直接返回成功
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if (!isLocalModified()) {
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return true;
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}
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/**
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* In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
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* {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
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* note data info
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* 理论上,一旦数据发生变化,笔记应该更新LOCAL_MODIFIED和MODIFIED_DATE字段。
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* 为了数据安全,即使更新笔记失败,我们仍然尝试更新笔记数据信息
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*/
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if (context.getContentResolver().update(
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
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null) == 0) {
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Log.e(TAG, "Update note error, should not happen");
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// Do not return, fall through
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Log.e(TAG, "更新笔记错误,这不应发生");
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// 不返回,继续执行
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}
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// 清空已同步的变更值
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mNoteDiffValues.clear();
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// 同步笔记数据,如果失败则返回false
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if (mNoteData.isLocalModified()
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&& (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
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return false;
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@ -130,17 +200,23 @@ public class Note {
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return true;
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}
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/**
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* 内部类,管理笔记的相关数据(文本和通话记录)
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*/
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private class NoteData {
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// 文本内容ID
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private long mTextDataId;
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// 存储文本内容变更值
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private ContentValues mTextDataValues;
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// 通话记录ID
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private long mCallDataId;
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// 存储通话记录变更值
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private ContentValues mCallDataValues;
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private static final String TAG = "NoteData";
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/**
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* 构造函数,初始化笔记数据对象
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*/
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public NoteData() {
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mTextDataValues = new ContentValues();
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mCallDataValues = new ContentValues();
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@ -148,69 +224,116 @@ public class Note {
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mCallDataId = 0;
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}
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/**
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* 检查笔记数据是否有本地修改
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*
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* @return 如果有修改返回true,否则返回false
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*/
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boolean isLocalModified() {
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return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
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}
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/**
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* 设置文本内容ID
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*
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* @param id 文本内容ID
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* @throws IllegalArgumentException 如果ID无效
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*/
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void setTextDataId(long id) {
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if(id <= 0) {
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throw new IllegalArgumentException("Text data id should larger than 0");
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throw new IllegalArgumentException("文本数据ID应大于0");
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}
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mTextDataId = id;
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}
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/**
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* 设置通话记录ID
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*
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* @param id 通话记录ID
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* @throws IllegalArgumentException 如果ID无效
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*/
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void setCallDataId(long id) {
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if (id <= 0) {
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throw new IllegalArgumentException("Call data id should larger than 0");
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throw new IllegalArgumentException("通话数据ID应大于0");
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}
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mCallDataId = id;
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}
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/**
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* 设置通话记录数据
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*
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* @param key 键名
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* @param value 值
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*/
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void setCallData(String key, String value) {
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mCallDataValues.put(key, value);
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// 标记笔记已修改,并更新修改时间
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}
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/**
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* 设置文本内容数据
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*
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* @param key 键名
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* @param value 值
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*/
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void setTextData(String key, String value) {
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mTextDataValues.put(key, value);
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// 标记笔记已修改,并更新修改时间
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mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
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mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
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}
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/**
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* 将笔记数据推送到内容提供者(数据库)
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*
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* @param context 应用上下文
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* @param noteId 笔记ID
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* @return 操作成功返回笔记URI,失败返回null
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* @throws IllegalArgumentException 如果笔记ID无效
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*/
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Uri pushIntoContentResolver(Context context, long noteId) {
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/**
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* Check for safety
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* 安全检查
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*/
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if (noteId <= 0) {
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throw new IllegalArgumentException("Wrong note id:" + noteId);
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throw new IllegalArgumentException("错误的笔记ID:" + noteId);
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}
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// 创建批量操作列表
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ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
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ContentProviderOperation.Builder builder = null;
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// 处理文本内容变更
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if(mTextDataValues.size() > 0) {
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mTextDataValues.put(DataColumns.NOTE_ID, noteId);
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// 如果是新文本内容,执行插入操作
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if (mTextDataId == 0) {
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mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
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Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
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mTextDataValues);
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try {
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// 从URI中提取并设置新的文本内容ID
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setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
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} catch (NumberFormatException e) {
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Log.e(TAG, "Insert new text data fail with noteId" + noteId);
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Log.e(TAG, "插入新文本数据失败,笔记ID为" + noteId);
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mTextDataValues.clear();
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return null;
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}
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} else {
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// 如果是已有文本内容,执行更新操作
|
|
|
|
|
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
|
|
|
|
|
Notes.CONTENT_DATA_URI, mTextDataId));
|
|
|
|
|
builder.withValues(mTextDataValues);
|
|
|
|
|
operationList.add(builder.build());
|
|
|
|
|
}
|
|
|
|
|
// 清空已处理的变更值
|
|
|
|
|
mTextDataValues.clear();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 处理通话记录变更,逻辑与文本内容类似
|
|
|
|
|
if(mCallDataValues.size() > 0) {
|
|
|
|
|
mCallDataValues.put(DataColumns.NOTE_ID, noteId);
|
|
|
|
|
if (mCallDataId == 0) {
|
|
|
|
@ -220,7 +343,7 @@ public class Note {
|
|
|
|
|
try {
|
|
|
|
|
setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
|
|
|
|
|
} catch (NumberFormatException e) {
|
|
|
|
|
Log.e(TAG, "Insert new call data fail with noteId" + noteId);
|
|
|
|
|
Log.e(TAG, "插入新通话数据失败,笔记ID为" + noteId);
|
|
|
|
|
mCallDataValues.clear();
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
@ -233,6 +356,7 @@ public class Note {
|
|
|
|
|
mCallDataValues.clear();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 执行批量操作
|
|
|
|
|
if (operationList.size() > 0) {
|
|
|
|
|
try {
|
|
|
|
|
ContentProviderResult[] results = context.getContentResolver().applyBatch(
|
|
|
|
|