Android 判断ListView滑动方向，androidlistview,代码很简单，给mList

Android 判断ListView滑动方向，androidlistview,代码很简单，给mList

代码很简单，给mListView监听onScrollListener事件，然后在onScroll进行判断

//listView中第一项的索引    private int mListViewFirstItem = 0;    //listView中第一项的在屏幕中的位置    private int mScreenY = 0;    //是否向上滚动    private boolean mIsScrollToUp = false;    @Override    public void onScroll(AbsListView absListView, int firstVisibleItem,int visibleItemCount, int totalItemCount) {        if(mListView.getChildCount()>0)        {            boolean isScrollToUp = false;            View childAt = mListView.getChildAt(firstVisibleItem);            int[] location = new int[2];            childAt.getLocationOnScreen(location);            Log.d("onScroll", "firstVisibleItem= "+firstVisibleItem+" , y="+location[1]);            if(firstVisibleItem!=mListViewFirstItem)            {                if(firstVisibleItem>mListViewFirstItem)                {                    Log.e("--->", "向上滑动");                    isScrollToUp = true;                }else{                    Log.e("--->", "向下滑动");                    isScrollToUp = false;                }                mListViewFirstItem = firstVisibleItem;                mScreenY = location[1];            }else{                if(mScreenY>location[1])                {                    Log.i("--->", "->向上滑动");                    isScrollToUp = true;                }                else if(mScreenY<location[1])                {                    Log.i("--->", "->向下滑动");                    isScrollToUp = false;                }                mScreenY = location[1];            }            if(mIsScrollToUp!=isScrollToUp)            {                onScrollDirectionChanged(mIsScrollToUp);            }        }    }    private void onScrollDirectionChanged(boolean isScrollToUp)     {    }