How to know when an activity finishes a layout pass?

Question

I have a background thread that updates the UI of my activity, after the onCreate(). It can be adding layouts, or changing the size of others.

I simply

Answer 1

in addition to Phillip Fitzsimmons accepted answer, which is correct, I would also note that if someone needs to know the size in the view itself, the method:

protected void onSizeChanged(int w, int h, int oldw, int oldh) {
  super.onSizeChanged(w, h, oldw, oldh);
  // your code here
}

can be overridden and it will be called after the layout pass.