This is an old revision of the document!
A hodge-podge of tips, snippets, etc. in my journey to figure out the Android thread thing.
Run a routine every second
With Handler
I assume since this is with Handler and Runnable that this is in a separate thread? How to confirm?
final Handler handler = new Handler();
final int delay = 1000; // 1000 milliseconds == 1 second
handler.postDelayed(new Runnable() {
    public void run() {
        System.out.println("myHandler: here!"); // Do your work here
        handler.postDelayed(this, delay);
    }
}, delay);
With Timer
Does this run in separate thread?
new Timer().scheduleAtFixedRate(new TimerTask() {
    @Override
    public void run() {
        //your method
    }
}, 0, 1000);//put here time 1000 milliseconds=1 second