Widget - FAB Scale Animation

ScaleAnimation anim = new ScaleAnimation(0,1,0,1);
anim.setFillBefore(true);
anim.setFillAfter(true);
anim.setFillEnabled(true);
anim.setDuration(300);
anim.setInterpolator(new OvershootInterpolator());
_fab.startAnimation(anim);