Material Design - Floating Action Button. This is an example of using a Floating Action Button in Android 5.0 Lollipop and having it functional in pre-lollipop devices. The code was derived from http://www.bignerdranch.com/blog/floating-action-buttons-in-android-l/ and modified to work with pre-lollipop devices and updated to use version 21 instead of the Preview for L.
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Tags: Material Design - Floating Action Button, Material Design, Software (Industry), Floating Action Button, FAB, Lollipop, Android