Where do I create and use ScheduledThreadPoolExecutor, TimerTask, or Handler?
I prefer to use ScheduledThreadPoolExecutor. Generally, if I understand your requirements correctly, all these can be implemented in your activity, TimerTask and Handler are not needed, see sample code below:
public class MyActivity extends Activity { private ScheduledExecutorService scheduleTaskExecutor; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); scheduleTaskExecutor= Executors.newScheduledThreadPool(5); // This schedule a task to run every 10 minutes: scheduleTaskExecutor.scheduleAtFixedRate(new Runnable() { public void run() { // Parsing RSS feed: myFeedParser.doSomething(); // If you need update UI, simply do this: runOnUiThread(new Runnable() { public void run() { // update your UI component here. myTextView.setText("refreshed"); } }); } }, 0, 10, TimeUnit.MINUTES); } // end of onCreate()}Remember to finish/close your runnable task properly in Activity.onDestroy(), hope that help.