How can I stretch the image in imagebutton to the whole area of the imagebutton?

Question

Here is a picture that will help you understand my problem:

I want to stretch

Answer 1

Just set this two attributes on the ImageButton:

android:background="?attr/selectableItemBackgroundBorderless"
android:scaleType="centerCrop"

With those, you will get the provided src to be stretched, and also if you put some specific width and height on that ImageButton you won't get a rectangle around it.