android call function after specific time

Runnable mToastRunnable;
Handler mHandler = new Handler();

//create runnable for delay
mToastRunnable = new Runnable() {
    @Override
    public void run() {
        Toast.makeText(MainActivity.this, "This is a delayed toast", Toast.LENGTH_SHORT).show();
        mHandler.postDelayed(this, 3000000);
        getlocation();
    }
};

//start
 mToastRunnable.run();

//stop
 mHandler.removeCallbacks(mToastRunnable);