public static ViewDragHelper create(ViewGroup forParent, float sensitivity, Callback cb) {
        final ViewDragHelper helper = create(forParent, cb);
        helper.mTouchSlop = (int) (helper.mTouchSlop * (1 / sensitivity));
        return helper;
    }
Factory method to create a new ViewDragHelper.

@param forParent Parent view to monitor
@param sensitivity Multiplier for how sensitive the helper should be about detecting
                   the start of a drag. Larger values are more sensitive. 1.0f is normal.
@param cb Callback to provide information and receive events
@return a new ViewDragHelper instance
app/src/main/java/home/smart/fly/animations/widget/slidepanel/ViewDragHelper.java