Add serial number to recyclerview

I am trying to add serial number to a textview in android recyclerview. But it throws the below error

My code is here

@Override
        public void onBindViewHolder(final RViewHolder holder,final int position) {
            final commdtylist listitem=listitems2.get(position);
            for(i=1;i<=listitems2.size();i++){
                holder.comm_code.setText(i);
            }

Instead of

@Override
    public void onBindViewHolder(final RViewHolder holder,final int position) {
        final commdtylist listitem=listitems2.get(position);
        for(i=1;i<=listitems2.size();i++){
            holder.comm_code.setText(i);
        }
        }

Use

@Override
    public void onBindViewHolder(final RViewHolder holder,final int position) {
        final commdtylist listitem=listitems2.get(position);
            holder.comm_code.setText(String.valueOf(position+1));
      }

Use this

 holder.comm_code.setText(String.valueOf(position+1));