Why onDraw is not called after invalidate()?

Question

I have found many posts on stackoverflow but I still cannot solve my problem. Here is my code piece:

public class MyView extends RelativeLayout {

Button b1;         


        

Answer 1

You need to call setWillNotDraw(false); in order for your onDraw method to be called:

private void init() {
  setWillNotDraw(false);
  ...
}