当我在RecyclerView中单击单选按钮时，我发现其他按钮都会自动选中

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<Item> itemList;
    private HashMap<Integer, Boolean> selectedMap;

    public MyAdapter(List<Item> itemList) {
        this.itemList = itemList;
        selectedMap = new HashMap<>();
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        Item item = itemList.get(position);
        holder.radioButton.setChecked(selectedMap.get(position) != null && selectedMap.get(position));
        holder.radioButton.setOnClickListener(v -> {
            // 更新选中状态
            for (int i = 0; i < itemList.size(); i++) {
                selectedMap.put(i, i == position);
            }
            notifyDataSetChanged();
        });
    }

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

    public static class ViewHolder extends RecyclerView.ViewHolder {
        RadioButton radioButton;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            radioButton = itemView.findViewById(R.id.radioButton);
        }
    }
}