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

Check this - http://smartandroidians.blogspot.com/2010/04/changing-layout-height-dynamically.html

ll.getLayoutParams().height = 300;
ll.getLayoutParams().width = 200;
ll.requestLayout();

This works also on event handler.