set height of imageview as matchparent programmatically

Question

I need to set the height of an imageview as matchparent programatically.if it is a fixed height i know how to set.

but how can i set it as matchparent?

EDIT:

actually height of the parent layout is dynamic.so i need to make the height of the imageview as the height of parent.

Answer 1

imageView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); 

Answer 2

imageView.getLayoutParams().height= ViewGroup.LayoutParams.MATCH_PARENT;