如何在recyclerView上动态添加数据并保存数据？

// 1. 创建数据模型类
public class Item {
    private String name;
    // 其他属性和方法

    public Item(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}

// 2. 创建适配器类
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> {
    private List<Item> itemList;

    public ItemAdapter(List<Item> itemList) {
        this.itemList = itemList;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        // 创建视图项，并返回ViewHolder对象
        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) {
        // 绑定数据项到视图项
        Item item = itemList.get(position);
        holder.nameTextView.setText(item.getName());
    }

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

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView nameTextView;

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

// 3. 初始化RecyclerView
RecyclerView recyclerView = findViewById(R.id.recyclerView);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);

// 4. 创建数据集合
List<Item> itemList = new ArrayList<>();

// 5. 添加数据项
itemList.add(new Item("Item 1"));
itemList.add(new Item("Item 2"));

// 6. 通知适配器更新
ItemAdapter adapter = new ItemAdapter(itemList);
recyclerView.setAdapter(adapter);
adapter.notifyItemInserted(itemList.size() - 1);

// 7. 保存数据（示例使用SharedPreferences进行保存）
SharedPreferences sharedPreferences = getSharedPreferences("data", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("itemList", new Gson().toJson(itemList));
editor.apply();