@Override
 public void onFailure() {
   isLoadingMore = false;
   if (mAdapter != null) {
     mAdapter.notifyDataSetChanged();
   }
 }
 @Override
 public void setIsHaveMore(boolean isHaveMore) {
   this.isHaveMore = isHaveMore;
   if (mAdapter != null) {
     mAdapter.notifyDataSetChanged();
   }
 }
 @Override
 public void onSuccess(boolean hasMore) {
   isLoadingMore = false;
   isHaveMore = hasMore;
   if (mAdapter != null) {
     mAdapter.notifyDataSetChanged();
   }
 }