当我用String类型替换ArrayList <string>时，get（relativePosition）中出现错误

Question

我有一个绑定视图Holder的自定义适配器。

public void onBindViewHolder(RecyclerView.ViewHolder holder, int section, int relativePosition, int absolutePosition) {

        ArrayList<String> itemsInSection = allData.get(section).getAllItemsInSection();

        String itemName = itemsInSection.get(relativePosition);

        ItemViewHolder itemViewHolder = (ItemViewHolder) holder;

        itemViewHolder.itemTitle.setText(itemName);

        // Try to put a image . for sample i set background color in xml layout file
        // itemViewHolder.itemImage.setBackgroundColor(Color.parseColor("#01579b"));
    }

当我尝试将itemsInSection替换为我的要求时，我得到一个错误，指出无法在行String itemName = itemsInSection.get(relativePosition);中解析.get（int）

如何解决它。

预期代码：

public void onBindViewHolder(RecyclerView.ViewHolder holder, int section, int relativePosition, int absolutePosition) {

        String itemsInSection = allData.get(section).getAllItemsInSection();

        String itemName = itemsInSection.get(relativePosition);  //Error here

        ItemViewHolder itemViewHolder = (ItemViewHolder) holder;

        itemViewHolder.itemTitle.setText(itemName);

        // Try to put a image . for sample i set background color in xml layout file
        // itemViewHolder.itemImage.setBackgroundColor(Color.parseColor("#01579b"));
    }