When should I get Width View in Fragment

Question

I adding View (button) programally in Linearlayout.LinearLayout is layouted by XML in Fragment.

I want to get button width, but always return 0.

I googled thi

Answer 1

Check out post GlobalLayoutListener. You can use the listener on your Button in onCreateView() as you have used onWindowFocusChanged. It also is more reliable than onWindowFocusChanged().

Try out as below:

  final View myView = profileContainer.findViewById(R.id.sub_page_padding);
  ViewTreeObserver vto = profilePadding.getViewTreeObserver();
  vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
      Log.d("TEST", "Height = " + myView.getHeight() + " Width = " + myView.getWidth());
      ViewTreeObserver obs = profilePadding.getViewTreeObserver();
      obs.removeGlobalOnLayoutListener(this);
    }
  });