Can't get rid of bottom padding on button

Question

I have a button. It seems to have bottom padding I cannot get rid of:

<Button
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Foo"/>

In the resource editor, I can click the button, and you see the padding below the bottom edge of the button there. This seems to block me from properly centering the button vertically in a parent RelativeLayout.

I tried setting padding=0dip and layout_margin=0dip, no effect. That bottom padding persists.

Thanks

Answer 1

The padding is in the 9-patch of the buttons themselves.

I'd advise against trying to compensate because these graphics resources can change without notice. You'd be better off building your own 9-patch or editing the existing one to remove the padding.

Answer 2

setting android:layout_marginBottom="-5dp" for the button worked nicely for me.