在RecyclerView中使用两个Viewholder进行视图重叠

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

    private static final int VIEW_TYPE_BOTTOM = 0;
    private static final int VIEW_TYPE_OVERLAY = 1;

    public MyAdapter(List<Object> dataList) {
        this.dataList = dataList;
    }

    @Override
    public int getItemViewType(int position) {
        Object data = dataList.get(position);
        if (data instanceof TypeA) {
            return VIEW_TYPE_BOTTOM;
        } else if (data instanceof TypeB) {
            return VIEW_TYPE_OVERLAY;
        }
        return super.getItemViewType(position);
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        if (viewType == VIEW_TYPE_BOTTOM) {
            View view = inflater.inflate(R.layout.item_bottom, parent, false);
            return new BottomViewHolder(view);
        } else if (viewType == VIEW_TYPE_OVERLAY) {
            View view = inflater.inflate(R.layout.item_overlay, parent, false);
            return new OverlayViewHolder(view);
        }
        return null;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        Object data = dataList.get(position);
        if (holder instanceof BottomViewHolder && data instanceof TypeA) {
            // 绑定底层视图的数据
            ((BottomViewHolder) holder).bindData((TypeA) data);
        } else if (holder instanceof OverlayViewHolder && data instanceof TypeB) {
            // 绑定重叠视图的数据
            ((OverlayViewHolder) holder).bindData((TypeB) data);
        }
    }

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

    private static class BottomViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public BottomViewHolder(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
        }

        public void bindData(TypeA data) {
            // 绑定底层视图的数据
            textView.setText(data.getText());
        }
    }

    private static class OverlayViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public OverlayViewHolder(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
        }

        public void bindData(TypeB data) {
            // 绑定重叠视图的数据
            textView.setText(data.getText());
        }
    }
}