如何在flutter中显示文本小部件中的总价

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

class TotalPriceWidget extends StatelessWidget {
  final double totalPrice;

  TotalPriceWidget({required this.totalPrice});

  @override
  Widget build(BuildContext context) {
    NumberFormat currencyFormat = NumberFormat.currency(
      locale: 'en_US',
      symbol: '\$',
    );

    return Text(
      currencyFormat.format(totalPrice),
      style: TextStyle(
        fontSize: 18,
        color: Colors.black,
        fontWeight: FontWeight.bold,
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text('Total Price Example'),
      ),
      body: Center(
        child: TotalPriceWidget(totalPrice: 99.99),
      ),
    ),
  ));
}