在列表视图android中将商品价格加在一起

public class Product {
    private String name;
    private double price;

    public Product(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }
}

public class ProductAdapter extends ArrayAdapter<Product> {
    private double totalPrice = 0;

    public ProductAdapter(Context context, List<Product> products) {
        super(context, 0, products);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // Inflate the view if necessary
        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_product, parent, false);
        }

        // Get the current product
        Product product = getItem(position);

        // Update the total price
        totalPrice += product.getPrice();

        // Update the view with product data

        return convertView;
    }

    public double getTotalPrice() {
        return totalPrice;
    }
}

// In your activity or fragment:
ListView listView = findViewById(R.id.list_view);
ProductAdapter adapter = new ProductAdapter(this, productList);
listView.setAdapter(adapter);

// Get the total price
double totalPrice = adapter.getTotalPrice();