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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.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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import android.content.ContentValues;
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import android.content.Context;
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import android.content.OperationApplicationException;
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import android.net.Uri;
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import android.os.RemoteException;
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import android.util.Log;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.CallNote;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.TextNote;
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import java.util.ArrayList;
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public class Note {
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private ContentValues mNoteDiffValues;
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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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* 为数据库中添加新笔记生成一个新的笔记ID
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* @param context 上下文对象，用于访问应用程序的资源和其他内容提供者
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* @param folderId 文件夹ID，表示新笔记将被添加到的文件夹
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* @return 新创建的笔记的ID
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*/
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public static synchronized long getNewNoteId(Context context, long folderId) {
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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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values.put(NoteColumns.MODIFIED_DATE, createdTime);
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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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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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noteId = Long.valueOf(uri.getPathSegments().get(1));
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} catch (NumberFormatException e) {
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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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if (noteId == -1) {
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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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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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* 设置笔记的值
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* @param key 设置的字段名
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* @param value 设置的字段值
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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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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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* 设置文本数据
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* @param key 设置的字段名
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* @param value 设置的字段值
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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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* 设置文本数据ID
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* @param id 文本数据的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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* 获取文本数据ID
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* @return 文本数据的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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* 设置通话数据ID
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* @param id 通话数据的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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* 设置通话数据
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* @param key 设置的字段名
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* @param value 设置的字段值
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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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* 检查笔记是否被本地修改
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* @return 如果笔记被本地修改则返回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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* 同步笔记到数据库
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*
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* @param context 上下文对象，用于访问应用程序的资源和其他内容提供者
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* @param noteId 需要同步的笔记ID
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* @return 如果同步成功则返回true，否则返回false
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*/
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public boolean syncNote(Context context, long noteId) {
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if (noteId <= 0) {
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throw new IllegalArgumentException("错误的笔记ID:" + noteId);//记录更新错误的笔记
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}
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if (!isLocalModified()) {
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return true;
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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, "更新笔记错误，不应该发生");
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// 不返回，继续执行
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}
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mNoteDiffValues.clear();
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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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}
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return true;
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}
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/**
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* 内部类NoteData，管理笔记的文本数据和通话数据
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**/
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private class NoteData {
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private long mTextDataId;
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private ContentValues mTextDataValues;
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private long mCallDataId;
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private ContentValues mCallDataValues;
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private static final String TAG = "NoteData";
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public NoteData() {
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mTextDataValues = new ContentValues();
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mCallDataValues = new ContentValues();
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mTextDataId = 0;
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mCallDataId = 0;
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}
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/**
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* 检查数据是否被本地修改
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* @return 如果数据被本地修改则返回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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* 设置文本数据ID
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* @param文本数据的ID
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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("文本数据ID应该大于0");
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}
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mTextDataId = id;
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}
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/**
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* 设置通话数据ID
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* @param id 通话数据的ID
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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("通话数据ID应该大于0");
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}
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mCallDataId = id;
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}
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/**
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* 设置通话数据的字段
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* @param key 设置的字段名
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* @param value 设置的字段值
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*/
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void setCallData(String key, String value) {//字段名和字段值
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mCallDataValues.put(key, value);
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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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* 设置文本数据
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*
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* @param key 设置的字段名
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* @param value 设置的字段值
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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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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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* 将数据推送
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* @param context 上下文对象，用于访问应用程序的资源和其他内容提供者
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* @param noteId 笔记的ID
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* @return 如果推送成功则返回Uri，否则返回null
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*/
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Uri pushIntoContentResolver(Context context, long noteId) {
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/**
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* 安全性检查
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*/
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if (noteId <= 0) {
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throw new IllegalArgumentException("错误的笔记ID:" + noteId); //笔记ID
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}
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ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
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ContentProviderOperation.Builder builder = null;//推送失败返回null
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if (mTextDataValues.size() > 0) {//字段值大于0，插入文本呢数据
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mTextDataValues.put(DataColumns.NOTE_ID, noteId);
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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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setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
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} catch (NumberFormatException e) {
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Log.e(TAG, "插入新的文本数据失败，笔记ID" + 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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builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mTextDataId));
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builder.withValues(mTextDataValues);
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operationList.add(builder.build());
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}
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mTextDataValues.clear();
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}
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if (mCallDataValues.size() > 0) {//字段值大于0，插入通话数据
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mCallDataValues.put(DataColumns.NOTE_ID, noteId);
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if (mCallDataId == 0) {
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mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
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Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
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mCallDataValues);
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try {
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setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
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} catch (NumberFormatException e) {
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Log.e(TAG, "插入新的通话数据失败，笔记ID" + noteId);
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mCallDataValues.clear();
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return null;
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}
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} else {
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builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mCallDataId));
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builder.withValues(mCallDataValues);
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operationList.add(builder.build());
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}
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mCallDataValues.clear();
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}
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if (operationList.size() > 0) {
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try {
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ContentProviderResult[] results = context.getContentResolver().applyBatch(
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Notes.AUTHORITY, operationList);
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return (results == null || results.length == 0 || results[0] == null) ? null
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: ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
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} catch (RemoteException e) {
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Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
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return null;
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} catch (OperationApplicationException e) {
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Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
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return null;
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}
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}
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return null;
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}
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}
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}
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