Android - Starting a Timer using Handler

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private final static int DELAY = 30000;
private final Handler handler = new Handler();
private Timer timer;




private void launchTimer() {
    TimerTask timerTask = new TimerTask() {

        @Override        public void run() {
            handler.post(new Runnable() {
                public void run() {
                    // TODO
                    // write the code to be executed after timer ends
                    timer.cancel();
                }
            });
        }
    };
    timer = new Timer();
    timer.schedule(timerTask, DELAY);
}

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