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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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* @aPackage : net.micode.notes.gtask.remote
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* @aClassName: GTaskASyncTask
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* @Description:
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* 异步操作类，实现GTask的异步操作过程
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* 主要方法：
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* showNotification(int tickerId, String content) 向用户提示当前同步的状态，是一个用于交互的方法
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* doInBackground(Void... unused) 此方法在后台线程执行，完成任务的主要工作，通常需要较长的时间
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* onProgressUpdate(String... progress) 可以使用进度条增加用户体验度。 此方法在主线程执行，用于显示任务执行的进度。
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* onPostExecute(Integer result) 相当于Handler 处理UI的方式，在这里面可以使用在doInBackground 得到的结果处理操作UI
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* @aAuthor: Li Qiushi
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* @createdate: 12/24/2023 19:31 PM
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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 {
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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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public GTaskASyncTask(Context context, OnCompleteListener listener) {
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mContext = context;
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mOnCompleteListener = listener;
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/*
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获取系统服务中的NotificationManager对象，并将其赋值给成员变量mNotifiManager。这个对象用于管理应用程序的通知
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*/
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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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public void cancelSync() {
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mTaskManager.cancelSync();
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}
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public void publishProgess(String message) {//发布进度单位，系统将会调用onProgressUpdate()方法更新这些值
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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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* 该函数用于向用户提示当前同步的状态，是一个用于交互的方法
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* 两个参数：一个整数类型的tickerId，表示通知的唯一标识符
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* 和一个字符串类型的content，表示通知的内容，可以是任何文本信息，例如消息、警告或其他相关信息
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*/
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private void showNotification(int tickerId, String content) {
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PendingIntent pendingIntent;//一个描述了想要启动一个Activity、Broadcast或是Service的意图
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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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/*
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如果同步不成功，那么从系统取得一个用于启动一个NotesPreferenceActivity的PendingIntent对象
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如果同步成功，那么从系统取得一个用于启动一个NotesListActivity的PendingIntent对象
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*/
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Notification.Builder builder = new Notification.Builder(mContext)
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.setAutoCancel(true)
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.setContentTitle(mContext.getString(R.string.app_name))
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.setContentText(content)
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.setContentIntent(pendingIntent)
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.setWhen(System.currentTimeMillis())
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.setOngoing(true);
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Notification notification=builder.getNotification();
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//通过NotificationManager对象的notify（）方法来执行一个notification的消息
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mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
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}
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/**
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*用于在后台线程中执行耗时操作具体来说，它的作用是在后台线程中同步数据
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* 它是一个受保护的方法，返回类型为Integer。该方法接受一个可变参数unused，表示没有使用到的参数
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*/
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@Override
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protected Integer doInBackground(Void... unused) {
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publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
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.getSyncAccountName(mContext)));
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/*
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publishProgess用于更新进度信息，NotesPreferenceActivity.getSyncAccountName(mContext)来生成进度信息
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利用getString,把进程信息的内容传进sync_progress_login中
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*/
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return mTaskManager.sync(mContext, this);
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/*
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进行后台同步具体操作
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sync方法接受两个参数：一个是上下文对象mContext，另一个是当前对象this
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*/
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}
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@Override
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protected void onProgressUpdate(String... progress) {
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showNotification(R.string.ticker_syncing, progress[0]);
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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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* 用于在执行完后台任务后更新UI,显示结果
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* 根据不同的执行结果，代码会调用showNotification方法来显示相应的通知信息
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* 显示的不同结果：
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* 如果结果为GTaskManager.STATE_SUCCESS，则显示成功同步的通知
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* 如果结果为GTaskManager.STATE_NETWORK_ERROR，则显示网络错误的通知
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* 如果结果为GTaskManager.STATE_INTERNAL_ERROR，则显示内部错误的通知
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* 如果结果为GTaskManager.STATE_SYNC_CANCELLED，则显示同步取消的通知
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*/
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@Override
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protected void onPostExecute(Integer result) {
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if (result == GTaskManager.STATE_SUCCESS) {
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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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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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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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showNotification(R.string.ticker_cancel, mContext
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.getString(R.string.error_sync_cancelled));
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}
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/*
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如果存在mOnCompleteListener对象，代码还会创建一个新的线程来执行mOnCompleteListener.onComplete()方法，以完成一次操作
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*/
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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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