检测GridView滚动速度-Android

好吧,我希望你现在得到你的答案,但我还是会发一个,以备将来使用…

您需要覆盖 OnScrollListener 计算一下你自己的速度。 根据运动学: Distance/Time = Speed

private class SpeedDetectorOnScrollListener implements OnScrollListener {

    private long timeStamp;
    private int prevFirstVisibleItem;
    private int scrollingSpeed;

    public SpeedDetectorOnScrollListener () {
        timeStamp = System.currentTimeMillis();
        lastFirstVisibleItem = 0;
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        long lastTime = System.currentTimeMillis();
        timeStamp = lastTime;
        lastFirstVisibleItem = firstVisibleItem;
        scrollingSpeed =  (firstVisibleItem - lastFirstVisibleItem)/(lastTime-timeStamp)

    }

     public int getSpeed()
     {
       return scrollingSpeed;
     }
 }