GridView分页(精确监听AbsListView滚动至底部)

import android.view.View;
import android.widget.AbsListView;
import android.widget.Toast;
import android.widget.AbsListView.OnScrollListener;

/** 
* 滚动至列表底部，读取下一页数据 
*/
public class AutoLoadListener implements OnScrollListener {

  public interface AutoLoadCallBack {
    void execute();
  }

  private int getLastVisiblePosition = 0, lastVisiblePositionY = 0;
  private AutoLoadCallBack mCallback;

  public AutoLoadListener(AutoLoadCallBack callback) {
    this.mCallback = callback;
  }

  public void onScrollStateChanged(AbsListView view, int scrollState) {

    if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
      //滚动到底部     
      if (view.getLastVisiblePosition() == (view.getCount() - 1)) {
        View v = (View) view.getChildAt(view.getChildCount() - 1);
        int[] location = new int[2];
        v.getLocationOnScreen(location);//获取在整个屏幕内的绝对坐标     
        int y = location[1];

        MyLog.d("x" + location[0], "y" + location[1]);
        if (view.getLastVisiblePosition() != getLastVisiblePosition && lastVisiblePositionY != y)//第一次拖至底部     
        {
          Toast.makeText(view.getContext(), "已经拖动至底部，再次拖动即可翻页", 500).show();
          getLastVisiblePosition = view.getLastVisiblePosition();
          lastVisiblePositionY = y;
          return;
        } else if (view.getLastVisiblePosition() == getLastVisiblePosition && lastVisiblePositionY == y)//第二次拖至底部     
        {
          mCallback.execute();
        }
      }

      //未滚动到底部，第二次拖至底部都初始化     
      getLastVisiblePosition = 0;
      lastVisiblePositionY = 0;
    }
  }

  public void onScroll(AbsListView arg0, int arg1, int arg2, int arg3) {

  }
}

 

文章引自：http://blog.csdn.net/hellogv/article/details/6615487