Android pre Lollipop Floating Action Button Animation

Implementing animation for Floating Action Button (FAB) in Android for pre Lollipop devices. Includes a grow effect upon opening the app that greets users. Also uses the Quick Return pattern that hides/ shows the FAB upon scrolling a RecyclerView.

Running on Nexus 4 emulator Android 4.2.2 JellyBean.

Tutorial for implementing these animations for FAB: