如何在Dart/Flutter中显示两个十进制值？

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Decimal Values',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    double value1 = 123.45;
    double value2 = 67.89;

    return Scaffold(
      appBar: AppBar(
        title: Text('Decimal Values'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'Value 1: $value1',
              style: TextStyle(fontSize: 20),
            ),
            SizedBox(height: 20),
            Text(
              'Value 2: $value2',
              style: TextStyle(fontSize: 20),
            ),
          ],
        ),
      ),
    );
  }
}