如何在RecyclerView适配器中更改所选CardView的背景

我正在尝试更改cardview的背景，如果用户选择它并且想一次仅更改一个cardview的背景。

就像用户选择其他卡片视图一样，先前选择的卡片视图的背景应变为原始颜色。

到目前为止，RecyclerviewAdapter代码。

    @Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
    final List_data1 ld = list_data.get(position);
    holder.servicetype.setText(ld.getTitle());

    holder.cardView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            isselected = true;

            if (isselected == true) {
                holder.cardView.setCardBackgroundColor(Color.RED);
            } else {
                holder.cardView.setCardBackgroundColor(Color.WHITE);
            }

            Intent intent = new Intent("custom-message");
            intent.putExtra("servicename", ld.getTitle());
            LocalBroadcastManager.getInstance(v.getContext()).sendBroadcast(intent);

        }
    });
}

@Override
public int getItemCount() {
    return list_data.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {
    private CardView cardView;
    private TextView servicetype;

    public ViewHolder(View itemView) {
        super(itemView);

        cardView = itemView.findViewById(R.id.cardview);
        servicetype = itemView.findViewById(R.id.servicetype);

    }

}