android listview fling动画太快了

我有一个自定义的ListView，它逐页显示项目。所以我写了OnTouch方法，它工作得非常完美，现在我想写OnFling方法，它将实现我的ListView的平滑和惯性滚动

问题是smoothScrollToPositionint位置的滚动动画不平滑，速度非常快。smoothScrollToPositionint位置、int偏移量、int持续时间有效，但my minSdk必须为8，除此之外，该函数将当前元素放置在偏移量上

这是我的OnFling方法的代码：

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) 
{
        if(null == getAdapter()) return false;

        boolean returnValue = false;
        float pty1 = 0, pty2 = 0;

        if (e1 == null || e2 == null)
            return false;

        pty1 = e1.getY();
        pty2 = e2.getY();

        if (pty1 - pty2 > swipeMinDistance && Math.abs(velocityY) > swipeThresholdVelocity) 
        {
            float currentVelocity = Math.min(Math.abs(velocityY), Math.abs(swipeMaxVelocity));

            final int shift = (int) ((currentVelocity / swipeMaxVelocity) * swipeMaxElements + 1);

            if (activeItem < getAdapter().getCount() - shift - 1)
                activeItem = activeItem + shift;
            else
            {
                activeItem = getAdapter().getCount() - 1;
                return false;
            }

            returnValue = true;
        } 
        else if (pty2 - pty1 > swipeMinDistance && Math.abs(velocityY) > swipeThresholdVelocity) 
        {
            float currentVelocity = Math.min(Math.abs(velocityY), Math.abs(swipeMaxVelocity));

            final int shift = (int) ((currentVelocity / swipeMaxVelocity) * swipeMaxElements + 1);

            if (activeItem >= shift)
                activeItem = activeItem - shift;
            else
            {
                activeItem = 0;
                return false;
            }

            returnValue = true;
        }
        smoothScrollToPosition(activeItem);
        return returnValue;
    }

xml内容是：

<?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/rl_main"
  android:layout_width="match_parent"
  android:layout_height="match_parent">

 <konteh.example.errortest.CardsListView
     android:id="@+id/cardsListView"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_alignParentLeft="true"
     android:layout_alignParentTop="true"
     android:smoothScrollbar="true" 
     />

---

解决了！我的解决办法是：

    int pixelCount = height * shift * (isForward ? 1 : -1); // calculate approximately shift in pixels
    smoothScrollBy(pixelCount, 2 * DURATION * shift);//this smooth scroll works!
    postDelayed(new Runnable() 
    {
        public void run() 
        {
            smoothScrollBy(0, 0); // Stops the listview from overshooting.
            smoothScrollToPosition(activeItem + 1);
        }
    }, 
    DURATION * shift);

也许这不是最好的解决方案，但它确实有效