How to repeat a task after a fixed amount of time in android?

Set repeated task using this:

//Declare the timer
Timer t = new Timer();
//Set the schedule function and rate
t.scheduleAtFixedRate(new TimerTask() {

    @Override
    public void run() {
        //Called each time when 1000 milliseconds (1 second) (the period parameter)
    }

},
//Set how long before to start calling the TimerTask (in milliseconds)
0,
//Set the amount of time between each execution (in milliseconds)
1000);

and if you wanted to cancel the task simply call t.cancel() here t is your Timer object

and you can also check comment placed below your answer they have given brief information about that.