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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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// 定义一个异步任务类,继承自AsyncTask,用于执行后台任务
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public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
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// 定义一个常量,用作通知的唯一标识
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private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
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// 定义一个接口,用于通知任务完成
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public interface OnCompleteListener {
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void onComplete();
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}
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private Context mContext; // 上下文对象,用于获取系统服务等
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private NotificationManager mNotifiManager; // 通知管理器,用于管理通知
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private GTaskManager mTaskManager; // 任务管理器,用于处理具体的任务
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private OnCompleteListener mOnCompleteListener; // 完成监听器,用于通知任务完成
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// 构造方法,初始化上下文和完成监听器,获取通知管理器和任务管理器的实例
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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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mNotifiManager = (NotificationManager) mContext
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.getSystemService(Context.NOTIFICATION_SERVICE);
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mTaskManager = GTaskManager.getInstance();
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}
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// 取消同步任务的方法
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public void cancelSync() {
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mTaskManager.cancelSync();
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}
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// 发布进度信息的方法,将字符串消息转换为字符串数组,然后调用publishProgress
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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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// 私有方法,用于显示通知
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private void showNotification(int tickerId, String content) {
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// 创建一个通知,指定图标、提示文本和时间戳
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Notification notification = new Notification(R.drawable.notification, mContext
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.getString(tickerId), System.currentTimeMillis());
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// 设置通知的默认行为,这里是点亮LED灯
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notification.defaults = Notification.DEFAULT_LIGHTS;
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// 设置通知的标志,这里是自动取消
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notification.flags = Notification.FLAG_AUTO_CANCEL;
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// 创建一个待定意图,用于点击通知后的跳转
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PendingIntent pendingIntent;
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// 根据不同的tickerId,设置不同的跳转活动
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if (tickerId != R.string.ticker_success) {
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pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
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NotesPreferenceActivity.class), 0);
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} else {
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pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
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NotesListActivity.class), 0);
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}
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// 设置通知的详细信息
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notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
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pendingIntent);
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// 通过通知管理器发送通知
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mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
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}
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// 重写doInBackground方法,该方法在后台线程中执行异步任务
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@Override
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protected Integer doInBackground(Void... unused) {
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// 发布进度更新,显示登录进度
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publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
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.getSyncAccountName(mContext)));
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// 执行同步操作,并返回结果
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return mTaskManager.sync(mContext, this);
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}
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// 重写onProgressUpdate方法,该方法在主线程中执行,用于更新进度
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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GTaskSyncService的实例,则发送广播
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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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// 重写onPostExecute方法,该方法在异步任务执行完毕后被调用
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@Override
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protected void onPostExecute(Integer result) {
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// 根据异步任务的结果执行不同的操作
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if (result == GTaskManager.STATE_SUCCESS) {
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// 如果任务成功,显示成功通知,并更新同步时间
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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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NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
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} else if (result == GTaskManager.STATE_NETWORK_ERROR) {
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// 如果网络错误,显示网络错误通知
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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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// 如果内部错误,显示内部错误通知
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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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// 如果同步被取消,显示同步取消通知
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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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// 如果存在完成监听器,则在新的线程中调用完成回调
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if (mOnCompleteListener != null) {
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new Thread(new Runnable() {
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// 实现Runnable接口的run方法
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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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}
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