How to change android design support library FAB Button border color?

Question

I want to change fab button border color. border color is white, inside color is black or transparent

I\'d like my button to look like this:

Answer 1

First create a .xml shape resource let's call it ring.xml and put the following in it:

You will have to play with the thickness and innerRadius attributes to get it right, but that should do it! Also the bitmap source is just a filler, you want to put your F image there.

Then where you declare your fab, reference your ring like such:

android:background="@drawable/ring"

OR

In your java code, do the following:

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setBackgroundResource(R.drawable.ring);

Hope this helps!