Android: Create bigger Floating Action Button with bigger icon

Question

I want to create a bigger Floating Action Button (FAB), more than the usual 56 dp, with a bigger icon inside. (For my purpose an icon will never be self-explanatory so I will cr

Answer 1

In the Android P preview, having the FAB match its parent's size stopped working for me, as the icon stopped scaling in size, making it much too small and way off-center.

The easiest method I have found as a replacement is to place the FAB in a FrameLayout, set a fair margin on the FAB so the shadow is not cut off (I used 10dp), set both's sizes to wrap_content, and then add scaleX and scaleY to the FrameLayout.

This works as expected, allows one to easily scale by specific amounts, and does not affect any other floating action buttons.