How to set Floating Action Button image to fill the button?

Question

Usually icons are set for floating action buttons, but I need to set an image, so I can make a circular image.

I added it to the project (using Android Studio-> New

Answer 1

Set scale for the float button in xml

android:scaleX="2.0"

Or you can do it programmaticaly:

someButton.setScaleX(2.0f);
someButton.setScaleY(2.0f);