Android - Update TextView periodically

Question

I simply want to update a TextView periodically by a service. Let\'s say the TextView should display the time and update itself every 30 seconds. Could\'t you guys tell me how I

Answer 1

In onCreate() //updating every 30 seconds

      Handler handler =new Handler();
      final Runnable r = new Runnable() {
                public void run() {
                    handler.postDelayed(this, 30000);
                    String mydate = java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime());
                    edittextId.setText(mydate);
                }
            };
            handler.postDelayed(r, 0000);