public void setOnOverFlipListener(OnOverFlipListener onOverFlipListener) {
        this.mOnOverFlipListener = onOverFlipListener;
    }
The OnOverFlipListener will notify of over flipping. This is a great
listener to have when implementing pull-to-refresh

@param onOverFlipListener
app/src/main/java/home/smart/fly/animations/customview/flipview/FlipView.java