private void setLiseners() {
    // listview设置滑动监听
    lsv_new_house.setOnScrollListener(new AbsListView.OnScrollListener() {
      @Override
      public void onScrollStateChanged(AbsListView absListView, int i) {
      }

      @Override
      public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        if(firstVisibleItem == 0){
          View first_view = lsv_new_house.getChildAt(0);
          if(first_view != null && first_view.getTop() == 0){
//            LogUtils.e("已经滚动到顶部了");
            bl_down = true;// 可以下拉刷新了
          }else {
//            LogUtils.e("还没到顶部");
            bl_down = false;// 未滑动到顶部不让下拉刷新
          }
        }

        if(firstVisibleItem + visibleItemCount == totalItemCount){
          View last_view = lsv_new_house.getChildAt(lsv_new_house.getChildCount() - 1);
//          LogUtils.e("height = " + lsv_new_house.getBottom());// 最后一个item的底部与listview第一个item顶部之间的距离
//          int h = lsv_new_house.getHeight();
//          LogUtils.e("h = " + h);
          if(last_view != null && last_view.getBottom() == lsv_new_house.getHeight()){
//            LogUtils.e("已经滚动到最底部了");
            bl_up = true;// 可以上拉加载了
          }else {
//            LogUtils.e("还没到底部");
            bl_up = false;// 未滑动到底部不让上拉加载
          }
        }
      }
    });
  }