如何在Flutter中更改按钮主题的文本颜色

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        buttonTheme: ButtonThemeData(
          textTheme: ButtonTextTheme.primary,
          colorScheme: ColorScheme(
            primary: Colors.blue, // 设置按钮文本颜色
          ),
        ),
      ),
      home: Scaffold(
        appBar: AppBar(title: Text('Button Theme Example')),
        body: Center(
          child: ElevatedButton(
            onPressed: () {},
            child: Text('Click Me'),
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Button Theme Example')),
        body: Center(
          child: ElevatedButton(
            onPressed: () {},
            child: Text(
              'Click Me',
              style: TextStyle(color: Colors.white), // 设置按钮文本颜色
            ),
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Button Theme Example')),
        body: Center(
          child: ElevatedButton(
            onPressed: () {},
            style: ButtonStyle(
              foregroundColor: MaterialStateProperty.all<Color>(Colors.white), // 设置按钮文本颜色
            ),
            child: Text('Click Me'),
          ),
        ),
      ),
    );
  }
}