An Android timer demo call

timer.java

//need to import android.os.Handler;
final Handler h = new Handler();
h.postDelayed(new Runnable()
{
    private long time = 0;

    @Override
    public void run()
    {
        // do stuff then
        // can call h again after work!
        time += 1;
        Log.d("TimerExample", "Going for... " + time);
        // 1 second delay (takes millis)
        h.postDelayed(this, 1000);
    }
}, 0);