Floating Action Button Icon not centered inside

Question

I\'m trying to use a FAB but the icon inside is placing at bottom right of the button:

FAB with icon not centered

This is the FAB definition in the xml:

Answer 1

In my situation run ok this solution app:fab_icon="@drawable/btn_back_to_top_3x" enter image description here not android:src="@drawable/btn_back_to_top_3x enter image description here

And you can add android:scaleY="1.X" android:scaleX="1.X"

for additional variation