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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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* GTaskASyncTask类是一个异步任务类,用于执行Google任务的同步操作。
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* 该类继承自AsyncTask,并在后台线程中执行同步操作,同时在UI线程中更新进度和结果。
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*/
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public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
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private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
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public interface OnCompleteListener { //定义一个接口,用于在任务完成时通知监听器。
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void onComplete();
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}
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private Context mContext;
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private NotificationManager mNotifiManager;
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private GTaskManager mTaskManager;
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private OnCompleteListener mOnCompleteListener;
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/*
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* 构造函数,初始化上下文、通知管理器、任务管理器和完成监听器。
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* @param context 上下文
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* @param listener 完成监听器
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*/
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public GTaskASyncTask(Context context, OnCompleteListener listener) {
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// 初始化上下文
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mContext = context;
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// 初始化完成监听器
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mOnCompleteListener = listener;
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// 获取通知管理器
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mNotifiManager = (NotificationManager) mContext
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.getSystemService(Context.NOTIFICATION_SERVICE);
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// 获取任务管理器实例
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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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* 发布进度消息。
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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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* 显示通知。
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* @param tickerId 通知的提示文本ID
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* @param content 通知的内容
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*/
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private void showNotification(int tickerId, String content) {
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// 创建一个新的Notification对象
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Notification notification = new Notification(R.drawable.notification, mContext
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.getString(tickerId), System.currentTimeMillis());
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// 设置通知的默认灯光效果
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notification.defaults = Notification.DEFAULT_LIGHTS;
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// 设置通知的标志,自动取消通知
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notification.flags = Notification.FLAG_AUTO_CANCEL;
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// 创建PendingIntent,用于在用户点击通知时启动相应的Activity
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PendingIntent pendingIntent;
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if (tickerId != R.string.ticker_success) {
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// 如果通知不是成功通知,启动NotesPreferenceActivity
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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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// 如果通知是成功通知,启动NotesListActivity
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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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// 发送通知
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mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
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}
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/*
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* 在后台线程中执行同步操作。
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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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// 发布登录进度消息
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publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
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.getSyncAccountName(mContext)));
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// 调用任务管理器的同步方法,并返回同步结果状态码
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return mTaskManager.sync(mContext, this);
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}
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/*
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* 在UI线程中更新进度。
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* @param progress 进度消息
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*/
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@Override
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protected void onProgressUpdate(String... progress) {
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// 显示同步进度通知
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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,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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/*
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* 在UI线程中处理同步结果。
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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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// 根据同步结果状态码显示相应的通知
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if (result == GTaskManager.STATE_SUCCESS) {
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// 如果同步成功,显示成功通知,并更新最后一次同步时间
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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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// 如果同步失败,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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// 如果同步失败,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,启动新线程调用onComplete方法
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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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}
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