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software/GTaskASyncTask.java

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.remote;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import net.micode.notes.R;
import net.micode.notes.ui.NotesListActivity;
import net.micode.notes.ui.NotesPreferenceActivity;
/*
* GTaskASyncTask类是一个异步任务类用于执行Google任务的同步操作。
* 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。
*/
public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
public interface OnCompleteListener { //定义一个接口,用于在任务完成时通知监听器。
void onComplete();
}
private Context mContext;
private NotificationManager mNotifiManager;
private GTaskManager mTaskManager;
private OnCompleteListener mOnCompleteListener;
/*
* 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。
* @param context 上下文
* @param listener 完成监听器
*/
public GTaskASyncTask(Context context, OnCompleteListener listener) {
// 初始化上下文
mContext = context;
// 初始化完成监听器
mOnCompleteListener = listener;
// 获取通知管理器
mNotifiManager = (NotificationManager) mContext
.getSystemService(Context.NOTIFICATION_SERVICE);
// 获取任务管理器实例
mTaskManager = GTaskManager.getInstance();
}
/*
* 取消同步操作。
*/
public void cancelSync() {
mTaskManager.cancelSync();
}
/*
* 发布进度消息。
*/
public void publishProgess(String message) {
publishProgress(new String[] {
message
});
}
/*
* 显示通知。
* @param tickerId 通知的提示文本ID
* @param content 通知的内容
*/
private void showNotification(int tickerId, String content) {
// 创建一个新的Notification对象
Notification notification = new Notification(R.drawable.notification, mContext
.getString(tickerId), System.currentTimeMillis());
// 设置通知的默认灯光效果
notification.defaults = Notification.DEFAULT_LIGHTS;
// 设置通知的标志,自动取消通知
notification.flags = Notification.FLAG_AUTO_CANCEL;
// 创建PendingIntent用于在用户点击通知时启动相应的Activity
PendingIntent pendingIntent;
if (tickerId != R.string.ticker_success) {
// 如果通知不是成功通知启动NotesPreferenceActivity
pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
NotesPreferenceActivity.class), 0);
} else {
// 如果通知是成功通知启动NotesListActivity
pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
NotesListActivity.class), 0);
}
// 设置通知的详细信息
notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
pendingIntent);
// 发送通知
mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
}
/*
* 在后台线程中执行同步操作。
* @param unused 未使用的参数
* @return 同步结果状态码
*/
@Override
protected Integer doInBackground(Void... unused) {
// 发布登录进度消息
publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
.getSyncAccountName(mContext)));
// 调用任务管理器的同步方法,并返回同步结果状态码
return mTaskManager.sync(mContext, this);
}
/*
* 在UI线程中更新进度。
* @param progress 进度消息
*/
@Override
protected void onProgressUpdate(String... progress) {
// 显示同步进度通知
showNotification(R.string.ticker_syncing, progress[0]);
// 如果上下文是GTaskSyncService的实例发送广播
if (mContext instanceof GTaskSyncService) {
((GTaskSyncService) mContext).sendBroadcast(progress[0]);
}
}
/*
* 在UI线程中处理同步结果。
* @param result 同步结果状态码
*/
@Override
protected void onPostExecute(Integer result) {
// 根据同步结果状态码显示相应的通知
if (result == GTaskManager.STATE_SUCCESS) {
// 如果同步成功,显示成功通知,并更新最后一次同步时间
showNotification(R.string.ticker_success, mContext.getString(
R.string.success_sync_account, mTaskManager.getSyncAccount()));
NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
} else if (result == GTaskManager.STATE_NETWORK_ERROR) {
// 如果同步失败,显示网络错误通知
showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));
} else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
// 如果同步失败,显示内部错误通知
showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));
} else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
// 如果同步被取消,显示取消通知
showNotification(R.string.ticker_cancel, mContext
.getString(R.string.error_sync_cancelled));
}
// 如果存在完成监听器启动新线程调用onComplete方法
if (mOnCompleteListener != null) {
new Thread(new Runnable() {
public void run() {
mOnCompleteListener.onComplete();
}
}).start();
}
}
}