OverScrollLayout.java 文件源码

private void init() {
        configuration = ViewConfiguration.get(getContext());
        mScroller = new Scroller(getContext(), new OvershootInterpolator(0.75f));
        flingRunnable = new FlingRunnable();
        overScrollRunnable = new OverScrollRunnable();
        flingScroller = new OverScroller(getContext());
        detector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                if (isOverScrollTop || isOverScrollBottom || isOverScrollLeft || isOverScrollRight) {
                    return false;
                }
//
                flingRunnable.start(velocityX, velocityY);
                return false;
            }
        });
    }