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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.gtask.remote;
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import android.app.Notification;
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import android.app.NotificationManager;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import android.os.AsyncTask;
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import net.micode.notes.R;
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import net.micode.notes.ui.NotesListActivity;
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import net.micode.notes.ui.NotesPreferenceActivity;
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/**
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* Google任务同步异步任务类
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* 负责在后台执行Google任务同步操作,并通过通知反馈同步状态
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* 继承自AsyncTask,实现异步操作与UI线程的交互
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*/
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public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
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// 同步通知的唯一标识ID
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private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
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/**
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* 同步完成监听器接口
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* 用于在同步操作完成后通知调用方
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*/
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public interface OnCompleteListener {
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/**
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* 同步完成回调方法
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*/
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void onComplete();
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}
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// 应用上下文
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private Context mContext;
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// 通知管理器
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private NotificationManager mNotifiManager;
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// Google任务管理器实例
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private GTaskManager mTaskManager;
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// 同步完成监听器
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private OnCompleteListener mOnCompleteListener;
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/**
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* 构造函数
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* @param context 应用上下文
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* @param listener 同步完成监听器
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*/
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public GTaskASyncTask(Context context, OnCompleteListener listener) {
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mContext = context;
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mOnCompleteListener = listener;
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// 获取通知管理器实例
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mNotifiManager = (NotificationManager) mContext
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.getSystemService(Context.NOTIFICATION_SERVICE);
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// 获取Google任务管理器单例实例
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mTaskManager = GTaskManager.getInstance();
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}
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/**
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* 取消同步操作
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*/
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public void cancelSync() {
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mTaskManager.cancelSync();
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}
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/**
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* 发布同步进度消息
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* @param message 进度消息内容
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*/
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public void publishProgess(String message) {
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publishProgress(new String[] {
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message
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});
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}
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/**
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* 显示同步状态通知
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* @param tickerId 通知标题资源ID
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* @param content 通知内容
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*/
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private void showNotification(int tickerId, String content) {
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PendingIntent pendingIntent;
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// 根据同步结果设置不同的点击跳转意图
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if (tickerId != R.string.ticker_success) {
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// 同步失败或进行中时跳转到设置页面
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pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
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NotesPreferenceActivity.class), PendingIntent.FLAG_IMMUTABLE);
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} else {
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// 同步成功时跳转到便签列表页面
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pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
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NotesListActivity.class), PendingIntent.FLAG_IMMUTABLE);
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}
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// 构建通知对象(使用现代通知构建器)
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Notification notification = new Notification.Builder(mContext)
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.setContentTitle(mContext.getString(R.string.app_name)) // 设置通知标题
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.setContentText(content) // 设置通知内容
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.setContentIntent(pendingIntent) // 设置点击通知后的跳转意图
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.setSmallIcon(R.drawable.notification) // 设置通知小图标
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.setDefaults(Notification.DEFAULT_LIGHTS) // 设置通知默认灯光效果
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.setAutoCancel(true) // 设置通知点击后自动取消
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.build(); // 构建通知对象
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// 显示通知
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mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
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}
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/**
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* 后台执行同步操作(异步任务核心方法)
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* @param unused 未使用的参数
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* @return 同步结果状态码
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*/
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@Override
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protected Integer doInBackground(Void... unused) {
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// 发布同步开始的进度消息
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publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
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.getSyncAccountName(mContext)));
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// 执行Google任务同步并返回结果
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return mTaskManager.sync(mContext, this);
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}
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/**
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* 更新同步进度(在UI线程执行)
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* @param progress 进度消息数组
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*/
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@Override
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protected void onProgressUpdate(String... progress) {
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// 显示同步中的通知
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showNotification(R.string.ticker_syncing, progress[0]);
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// 如果上下文是同步服务,则发送广播通知进度
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if (mContext instanceof GTaskSyncService) {
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((GTaskSyncService) mContext).sendBroadcast(progress[0]);
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}
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}
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/**
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* 同步完成后的处理(在UI线程执行)
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* @param result 同步结果状态码
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*/
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@Override
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protected void onPostExecute(Integer result) {
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// 根据不同的同步结果显示对应的通知
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if (result == GTaskManager.STATE_SUCCESS) {
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// 同步成功
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showNotification(R.string.ticker_success, mContext.getString(
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R.string.success_sync_account, mTaskManager.getSyncAccount()));
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// 记录最后同步时间
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NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
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} else if (result == GTaskManager.STATE_NETWORK_ERROR) {
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// 网络错误
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showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));
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} else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
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// 内部错误
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showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));
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} else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
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// 同步取消
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showNotification(R.string.ticker_cancel, mContext
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.getString(R.string.error_sync_cancelled));
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}
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// 通知监听器同步完成(在新线程中执行,避免阻塞UI线程)
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if (mOnCompleteListener != null) {
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new Thread(new Runnable() {
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public void run() {
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mOnCompleteListener.onComplete();
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}
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}).start();
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}
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}
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} |