如何从回收视图中获取价值，并将其相加，以获得android studio中的总价值

// 数据模型类
public class Item {
    private int value;

    public Item(int value) {
        this.value = value;
    }

    public int getValue() {
        return value;
    }
}

// 自定义ViewHolder类
public class ItemViewHolder extends RecyclerView.ViewHolder {
    private TextView valueTextView;

    public ItemViewHolder(View itemView) {
        super(itemView);
        valueTextView = itemView.findViewById(R.id.valueTextView);
    }

    public void bind(Item item) {
        valueTextView.setText(String.valueOf(item.getValue()));
    }
}

// 适配器类
public class ItemAdapter extends RecyclerView.Adapter<ItemViewHolder> {
    private List<Item> itemList;

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

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

    @Override
    public void onBindViewHolder(@NonNull ItemViewHolder holder, int position) {
        Item item = itemList.get(position);
        holder.bind(item);
    }

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

// 在Activity或Fragment中的代码
public class MainActivity extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ItemAdapter itemAdapter;
    private List<Item> itemList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));

        itemList = new ArrayList<>();
        itemList.add(new Item(10));
        itemList.add(new Item(20));
        itemList.add(new Item(30));

        itemAdapter = new ItemAdapter(itemList);
        recyclerView.setAdapter(itemAdapter);

        int totalValue = 0;
        for (Item item : itemList) {
            totalValue += item.getValue();
        }

        Log.d("Total Value", String.valueOf(totalValue));
    }
}