schedule a repeating task

timer = new Timer();

    timer.scheduleAtFixedRate(new TimerTask() {

        synchronized public void run() {

            \\ here your todo;
            }

        }}, 60000, 60000);

http://stackoverflow.com/questions/14376470/scheduling-recurring-task-in-android

timer = new Timer();
TimerTask task = new TimerTask(){

    @Override    public void run() {
        new GetJson().execute(url);
    }

};
long whenToStart = 5*1000L; // 5 secondslong howOften = 5*1000L; // 5 secondstimer.scheduleAtFixedRate(task, whenToStart, howOften);