Android ListView监听滑动事件的方法(详解)

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idmListView.getFirstVisiblePosition();// 获取当前可见区域内最后一个item的idmListView.getLastVisiblePosition();