listView 的回弹overScrollBy

ListView有一个控制滑动到边缘的处理方法代码：@Overrideprotected boolean overScrollBy(int deltaX,int deltaY,int scrollX, int scrollY, int scrollRangeX,int scrollRangeY, int maxOverScrollX,int maxOverScrollY, boolean isTouchEvent){//maxOverScrollY---Number of pixels to overscroll by in either direction along the Y axis 即：默认值为0return super.overScrollBy(deltaX, deltaY, scrollX, scrollY,scrollRangeX, scrollRangeY, maxOverScrollX,maxOverScrollY,isTouchEvent);}重写ListView的overScrollBy（）实现 具有弹性的ListView，代码如下：

<pre name="code" class="java">public class MyListView extends ListView{private Context context;public MyListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);// TODO Auto-generated constructor stubthis.context = context;}public MyListView(Context context, AttributeSet attrs) {this(context,attrs,0);// TODO Auto-generated constructor stub}public MyListView(Context context) {this(context,null);// TODO Auto-generated constructor stub}private   int mMaxOverDistance = 120;@Overrideprotected boolean overScrollBy(int deltaX,int deltaY,int scrollX, int scrollY, int scrollRangeX,int scrollRangeY, int maxOverScrollX,int maxOverScrollY, boolean isTouchEvent){//This is where the magic happens， we have replaced the incoming maxOverScrollY with our own custom variable mMaxYOverscrollDistance;return super.overScrollBy(deltaX, deltaY, scrollX, scrollY,scrollRangeX, scrollRangeY, maxOverScrollX, mMaxOverDistance, isTouchEvent);}}