mListView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 触摸按下时的操作
break;
case MotionEvent.ACTION_MOVE:
// 触摸移动时的操作
break;
case MotionEvent.ACTION_UP:
// 触摸抬起时的操作
break;
}
return false;
}
});
/**
* Interface definition for a callback to be invoked when the list or grid
* has been scrolled.
*/
public interface OnScrollListener {
/**
* The view is not scrolling. Note navigating the list using the trackball counts as
* being in the idle state since these transitions are not animated.
*/
public static int SCROLL_STATE_IDLE = 0;
/**
* The user is scrolling using touch, and their finger is still on the screen
*/
public static int SCROLL_STATE_TOUCH_SCROLL = 1;
/**
* The user had previously been scrolling using touch and had performed a fling. The
* animation is now coasting to a stop
*/
public static int SCROLL_STATE_FLING = 2;
/**
* Callback method to be invoked while the list view or grid view is being scrolled. If the
* view is being scrolled, this method will be called before the next frame of the scroll is
* rendered. In particular, it will be called before any calls to
* {@link Adapter#getView(int, View, ViewGroup)}.
*
* @param view The view whose scroll state is being reported
*
* @param scrollState The current scroll state. One of
* {@link #SCROLL_STATE_TOUCH_SCROLL} or {@link #SCROLL_STATE_IDLE}.
*/
public void onScrollStateChanged(AbsListView view, int scrollState);
/**
* Callback method to be invoked when the list or grid has been scrolled. This will be
* called after the scroll has completed
* @param view The view whose scroll state is being reported
* @param firstVisibleItem the index of the first visible cell (ignore if
* visibleItemCount == 0)
* @param visibleItemCount the number of visible cells
* @param totalItemCount the number of items in the list adaptor
*/
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
int totalItemCount);
}
if (firstVisibleItem + visibleItemCount == totalItemCount && totalItemCount > 0) {
// 滚动到最后一行了
}
if (firstVisibleItem > oldVisibleItem) {
// 向上滑动
}
if (firstVisibleItem < oldVisibleItem) {
// 向下滑动
}
oldVisibleItem = firstVisibleItem;
ListView也为我们提供了一些封装好了的方法,来获取item的位置信息
// 获取当前可见区域内第一个item的id
mListView.getFirstVisiblePosition();
// 获取当前可见区域内最后一个item的id
mListView.getLastVisiblePosition();
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