Android ScrollView取消惯性滚动

【Android ScrollView取消惯性滚动】

ScrollView中惯性滚动的效果，想让这个ScrollView慢一点滑动或者接近drag(拖拽)操作，就提出了添加阻尼的说法。只要重新fling方法即可，将velocity值极至缩小。

public class CustomHorizontalScrollView extends HorizontalScrollView {
    private Context context;
    private ScrollViewListenner listenner;
    private CustomHorizontalScrollView currentView;

    public CustomHorizontalScrollView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
        this.context = context;
    }

    public CustomHorizontalScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        this.context = context;
    }

    public CustomHorizontalScrollView(Context context, AttributeSet attrs,
                                      int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        // TODO Auto-generated constructor stub
        this.context = context;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        // TODO Auto-generated method stub
        currentView = this;
        return super.onTouchEvent(ev);
    }

    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
        // TODO Auto-generated method stub
        if (null != listenner) {
            this.listenner.onScrollChanged(currentView, l, t, oldl, oldt);
        }
        super.onScrollChanged(l, t, oldl, oldt);
    }

    public interface ScrollViewListenner {
        public void onScrollChanged(CustomHorizontalScrollView view, int l,
                                    int t, int oldl, int oldt);
    }

    public void setScrollViewListenner(ScrollViewListenner listenner) {
        this.listenner = listenner;
    }

    /**
    *
    *阻尼：1000为将惯性滚动速度缩小1000倍，近似drag操作。
    @Override
    public void fling(int velocity) {
        super.fling(velocity / 1000);
    }
    */
}