How to set timer in android?

Question

Can someone give a simple example of updating a textfield every second or so?

I want to make a flying ball and need to calculate/update the ball coordinates every se

Answer 1

You want your UI updates to happen in the already-existent UI thread.

The best way is to use a Handler that uses postDelayed to run a Runnable after a delay (each run schedules the next); clear the callback with removeCallbacks.

You're already looking in the right place, so look at it again, perhaps clarify why that code sample isn't what you want. (See also the identical article at Updating the UI from a Timer).