Android Recyclerview中的多个视图类型仅显示一个视图

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private List<Object> dataList;

    // 构造函数
    public MyAdapter(List<Object> dataList) {
        this.dataList = dataList;
    }

    // 根据位置和数据类型返回视图类型
    @Override
    public int getItemViewType(int position) {
        Object data = dataList.get(position);
        if (data instanceof Type1) {
            return 1;
        } else if (data instanceof Type2) {
            return 2;
        } else {
            return 3;
        }
    }

    // 创建视图持有者
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        if (viewType == 1) {
            View view = inflater.inflate(R.layout.item_type1, parent, false);
            return new Type1ViewHolder(view);
        } else if (viewType == 2) {
            View view = inflater.inflate(R.layout.item_type2, parent, false);
            return new Type2ViewHolder(view);
        } else {
            View view = inflater.inflate(R.layout.item_type3, parent, false);
            return new Type3ViewHolder(view);
        }
    }

    // 绑定数据到视图持有者
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        Object data = dataList.get(position);
        if (holder instanceof Type1ViewHolder) {
            ((Type1ViewHolder) holder).bindData((Type1) data);
        } else if (holder instanceof Type2ViewHolder) {
            ((Type2ViewHolder) holder).bindData((Type2) data);
        } else if (holder instanceof Type3ViewHolder) {
            ((Type3ViewHolder) holder).bindData((Type3) data);
        }
    }

    // 返回数据项数量
    @Override
    public int getItemCount() {
        return dataList.size();
    }

    // 视图持有者类
    private static class Type1ViewHolder extends RecyclerView.ViewHolder {
        // 视图持有者的构造函数
        public Type1ViewHolder(View itemView) {
            super(itemView);
        }

        // 绑定数据到视图持有者
        public void bindData(Type1 data) {
            // 绑定数据到视图
        }
    }

    private static class Type2ViewHolder extends RecyclerView.ViewHolder {
        public Type2ViewHolder(View itemView) {
            super(itemView);
        }

        public void bindData(Type2 data) {
            // 绑定数据到视图
        }
    }

    private static class Type3ViewHolder extends RecyclerView.ViewHolder {
        public Type3ViewHolder(View itemView) {
            super(itemView);
        }

        public void bindData(Type3 data) {
            // 绑定数据到视图
        }
    }
}