private void showPopupWindow(ViewHolder holder) {

        View convertView = LayoutInflater.from(_context).inflate(R.layout.demo_layout, null);
        convertView.setTag(holder.view);
        TextView textView = (TextView) convertView.findViewById(R.id.textOnly);
        textView.setText("short message to be shown");
        popupWindow = new PopupWindow(convertView, LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);

        popupWindow.showAsDropDown(holder.view, 0, 0);


    }