Android Material design Android FAB (Floating Action Button) Animations
 
         Creating Project      Here i have created a Android Studio project with package shahedkhondaker .fabanimation  also Activity as  MainActivity  and layout as  activity_main .   We have a larger FAB and two smaller FAB. When the larger FAB is pressed the two smaller FAB pop up. Initially the two smaller Fab are invisible.The layout  activity_main  is given as,          activity_main.xml          <? xml  version = "1.0"  encoding = "utf-8" ?>   < android.support.design.widget.CoordinatorLayout        xmlns:android = "http://schemas.android.com/apk/res/android"        xmlns:app = "http://schemas.android.com/apk/res-auto"        xmlns:tools = "http://schemas.android.com/tools"        android:layout_width = "match_parent"        android:layout_height = "match_parent"        android:fitsSystemWindows = "true"     ...