How to make image fill RelativeLayout background without stretching

Question

In my Android project, I am not quite sure how to make my background image fill the entirety of the RelativeLayout root element in XML, which is the size of the

Answer 1

according to this answer If you want your ImageView fill your RelativeLayout,use align parameters for ImageView.

you can put all of your views to a LinearLayout and set align parameter to your background ImageView: