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

ImageButton is ImageView.
If you want your image to fill button
than set android:scaleType="fitXY", so the image you set in android:src will be stretched to fill whole image button.

ImageButton has a background under your image and padding.
If you do not want background
set android:background="@android:color/transparent".
If you do not want padding
set android:padding="0" or set background without padding.