我想在gridrecyclerView上添加标头，并正在使用notifyDataSetChanged

Question

我想在带有2列并使用notifyDataSetChanged的recyclerView / Gridlayout上添加标题

我试图在ViewHolder上调用recyclerView / Gridlayout到recyclerView，但是它给了我所有userId，所以我没有对数据进行排序

   @Override
public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder   holder, final int position) {
    ((DocAttachVh) holder).setData(position);

}

 private void setData(final int position) {
        innerFiles.clear();
        file = mFiles.get(position);
        Utils.setImage(context, file.getUser(), imvUserIcon, true);
        if (file.getUser() != null) {
            tvUserName.setText(file.getUser().getName());
            tvUserApp.setText(file.getUser().getApp());
            tvDate.setText(file.getDate());
            getDatainnerData(file.getUser().getId());
        }
    }

  getDatainnerData is giving me post data from api file datas using      user id[enter image description here][1]