判断listview 各种滑动状态


  /**      scrollState有三种状态，分别是SCROLL_STATE_IDLE、SCROLL_STATE_TOUCH_SCROLL、SCROLL_STATE_FLING

        SCROLL_STATE_IDLE是当屏幕停止滚动时

        SCROLL_STATE_TOUCH_SCROLL是当用户在以触屏方式滚动屏幕并且手指仍然还在屏幕上时

        SCROLL_STATE_FLING是当用户由于之前划动屏幕并抬起手指，屏产生惯性滑动时*/

private boolean scrollFlag = false;// 标记是否滑动
private int lastVisibleItemPosition;// 标记上次滑动位置

listView.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
switch (scrollState) {
case SCROLL_STATE_TOUCH_SCROLL:
scrollFlag = true;
break;
case SCROLL_STATE_FLING:
scrollFlag = false;
break;
case SCROLL_STATE_IDLE:
scrollFlag = false;
break;
default:
break;
}
}

@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (scrollFlag) {
if (firstVisibleItem > lastVisibleItemPosition) {//上滑
}
if (firstVisibleItem < lastVisibleItemPosition) {//下滑

}
if (firstVisibleItem == lastVisibleItemPosition) {
return;
}
lastVisibleItemPosition = firstVisibleItem;
}
}
});