elv_music_res_fragment.setOnScrollListener(new AbsListView.OnScrollListener() {

             private int mLastFirstPostion = 0;

             private int mLastFirstTop = 0;

             private int touchSlop = ViewConfiguration.get(getActivity()).getScaledTouchSlop();

             @Override

             public void onScrollStateChanged(AbsListView view, int scrollState) {

             }

             @Override

             public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

                 int currentTop;

                 View firstChildView = absListView.getChildAt(0);

                 if (firstChildView != null) {

                     currentTop = absListView.getChildAt(0).getTop();

                 } else {

                     //ListView初始化的时候会回调onScroll方法，此时getChildAt(0)仍是为空的

                     return;

                 }

                 //判断上次可见的第一个位置和这次可见的第一个位置

                 if (firstVisibleItem != mLastFirstPostion) {

                     //不是同一个位置

                     if (firstVisibleItem > mLastFirstPostion) {

                         // 下

                         if (rg_container_resFragment.getVisibility() != View.GONE) {

                             rg_container_resFragment.setVisibility(View.GONE);

                         }

                     } else {

                         // 上

                         if (rg_container_resFragment.getVisibility() != View.VISIBLE) {

                             rg_container_resFragment.setVisibility(View.VISIBLE);

                         }

                     }

                     mLastFirstTop = currentTop;

                 } else {

                     //是同一个位置

                     if (Math.abs(currentTop - mLastFirstTop) > touchSlop) {

                         //避免动作执行太频繁或误触，加入touchSlop判断，具体值可进行调整

                         if (currentTop > mLastFirstTop) {

                             // 上

                             if (rg_container_resFragment.getVisibility() != View.VISIBLE) {

                                 rg_container_resFragment.setVisibility(View.VISIBLE);

                             }

                         } else if (currentTop < mLastFirstTop) {

                             // 下

                             if (rg_container_resFragment.getVisibility() != View.GONE) {

                                 rg_container_resFragment.setVisibility(View.GONE);

                             }

                         }

                         mLastFirstTop = currentTop;

                     }

                 }

                 mLastFirstPostion = firstVisibleItem;

             }

         });