How to execute Async task repeatedly after fixed time intervals

public void callAsynchronousTask() {    final Handler handler = new Handler();    Timer timer = new Timer();    TimerTask doAsynchronousTask = new TimerTask() {               @Override        public void run() {            handler.post(new Runnable() {                public void run() {                           try {                        PerformBackgroundTask performBackgroundTask = new PerformBackgroundTask();                        // PerformBackgroundTask this class is the class that extends AsynchTask                         performBackgroundTask.execute();                    } catch (Exception e) {                        // TODO Auto-generated catch block                    }                }            });        }    };    timer.schedule(doAsynchronousTask, 0, 50000); //execute in every 50000 ms}

  //Every 10000 ms          private void doSomethingRepeatedly() {      Timer timer = new Timer();      timer.scheduleAtFixedRate( new TimerTask() {            public void run() {                  try{                     new SendToServer().execute();                   }                  catch (Exception e) {                      // TODO: handle exception                  }             }            }, 0, 10000);                     }

You can just a handler:

private int m_interval = 5000; // 5 seconds by default, can be changed laterprivate Handle m_handler;@Overrideprotected void onCreate(Bundle bundle){  ...  m_handler = new Handler();}Runnable m_statusChecker = new Runnable(){     @Override      public void run() {          updateStatus(); //this function can change value of m_interval.          m_handler.postDelayed(m_statusChecker, m_interval);     }}void startRepeatingTask(){    m_statusChecker.run(); }void stopRepeatingTask(){    m_handler.removeCallback(m_statusChecker);}

But I would recommend you to check this framework: http://code.google.com/intl/de-DE/android/c2dm/ Is a different approach: the server will notify the phone when something is ready (thus, saving some bandwidth and performance:))