我有后臺服務(Service→Thread→Timer→Asynctask)。 Timer每5秒執行一次Asynctask。如果Asynctask返回true，則發送通知。Android暫停服務，線程，Asynctask？使用postdelayed的處理程序呢？

現在我希望服務在點擊通知(意味著我在接下來的20秒內不會再收到另一個通知)后等待20秒。 什么“對象”需要在這里停止？據我所知，暫停Asynctasks并不是一個好主意。所以它可能是服務或線程的權利？使用postdelayed方法的Handler是最佳解決方案嗎？

編輯2016年9月3日

public class NotifiyService extends Service {

String savedsa;

boolean value;

protected static final int DEFAULT_TIMEOUT = 5000;

protected static final int EXTENDED_TIMEOUT = 20000;

private HandlerThread mBgThread;

private Handler mBgHandler;

private MyTimerRunnable mRunnable;

@Override

public void onCreate() {

mBgThread = new HandlerThread("MyBgThread");

mBgThread.start();

mBgHandler = new Handler(mBgThread.getLooper(), (Handler.Callback) this);

mRunnable = new MyTimerRunnable();

}

@Override

public int onStartCommand(Intent intent, int flags, int startId) {

SharedPreferences sharedPreferences7 = getSharedPreferences("Prefsa",MODE_WORLD_READABLE);

savedsa = sharedPreferences7.getString("keysa","");

Toast.makeText(NotifiyService.this,getResources().getString(R.string.MonStarted)+ "\n" + savedsa,Toast.LENGTH_LONG).show();

mBgHandler.removeCallbacks(mRunnable);

mBgHandler.postDelayed(mRunnable,EXTENDED_TIMEOUT);

return START_STICKY;

}

@Override

public void onDestroy() {

//super.onDestroy();

mBgHandler.removeCallbacks(mRunnable);

mBgThread.quitSafely();

Toast.makeText(NotifiyService.this,getResources().getString(R.string.MonStopped), Toast.LENGTH_LONG).show();

}

private class MyTimerRunnable implements Runnable{

@Override

public void run() {

while(!value){

try {

URL url = new URL(savedsa);

HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();

httpURLConnection.setRequestMethod("HEAD");

httpURLConnection.setConnectTimeout(3000);

httpURLConnection.setReadTimeout(3000);

httpURLConnection.connect();

value = true;

} catch (MalformedURLException e) {

e.printStackTrace();

value = false;

} catch (ProtocolException e) {

e.printStackTrace();

value = false;

} catch (IOException e) {

e.printStackTrace();

value = false;

}

if(value){

NotificationCompat.Builder builder = new NotificationCompat.Builder(NotifiyService.this);

builder.setSmallIcon(R.drawable.dummy);

Intent intent = new Intent(NotifiyService.this, Main2Activity.class);

intent.setAction(Intent.ACTION_MAIN);

intent.addCategory(Intent.CATEGORY_LAUNCHER);

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

PendingIntent pendingIntent = PendingIntent.getActivity(NotifiyService.this,0,intent,0);

builder.setContentIntent(pendingIntent);

builder.setLights(Color.YELLOW, 600, 600);

builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));

builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.dummy));

builder.setContentTitle(getResources().getString(R.string.newNotify));

builder.setContentText(getResources().getString(R.string.newNotify2));

builder.setAutoCancel(true);

NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

notificationManager.notify(1, builder.build());

}

mBgHandler.postDelayed(this,DEFAULT_TIMEOUT);}

}

}

@Override

public IBinder onBind(Intent intent) {

// TODO: Return the communication channel to the service.

return null;

}

}

總結

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