Updating the UI from a Timer using Handler on Android

private Handler handler = new Handler();
handler.postDelayed(runnable, 100);
private Runnable runnable = new Runnable() {
   @Override
   public void run() {
      /* do what you need to do */
      foobar();
      /* and here comes the "trick" */
      handler.postDelayed(this, 100);
   }
};

If you want it to stop, you can just call handler.removeCallback(runnable) and it won’t start again, until you tell it to

References
http://www.mopri.de/2010/timertask-bad-do-it-the-android-way-use-a-handler/

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