@Override
  protected void setListener() {
    mRefreshLayout.setDelegate(this);

    mAdapter = new StaggeredRecyclerViewAdapter(mApp);
    mAdapter.setOnRVItemClickListener(this);
    mAdapter.setOnRVItemLongClickListener(this);
  }
 @Override
 public boolean onRVItemLongClick(View v, int position) {
   showToast("长按了条目 " + mAdapter.getItem(position).desc);
   return true;
 }
 @Override
 public void onRVItemClick(View v, int position) {
   showToast("点击了条目 " + mAdapter.getItem(position).desc);
 }