How to restart an Activity?

To restart a Activity you can use the recreate () , available from API 11.

  

Make this Activity recreated with a new instance. This results in the same flow when Activity is created due to a configuration change - the current instance will go through its lifecycle to onDestroy (), and a new instance will be created later.

Completing Zulian's response, you can put this code in the creation of Activity:

new CountDownTimer(RESTART_TIME, 1000) {
    public void onTick(long millisUntilFinished) {}

    public void onFinish() {
        recreate();
    }
}.start();