Dynamically changing the linearlayout width or height on Android

Question

I am trying to change linear layout or any other widget width or height dynamically but throwing exception.

My layout is:

Answer 1

The problem here is that when you set the layout params the type needs to be that of the parent, in this case that is a FrameLayout. You need to do this:

ll.setLayoutParams(new FrameLayout.LayoutParams(30,60));