Flutter:如何在ThemeData中设置TextButton样式

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        buttonTheme: ButtonThemeData(
          textButtonTheme: TextButtonThemeData(
            style: ButtonStyle(
              foregroundColor: MaterialStateProperty.all<Color>(Colors.blue), // 设置文本颜色
              backgroundColor: MaterialStateProperty.all<Color>(Colors.white), // 设置背景颜色
              shape: MaterialStateProperty.all<RoundedRectangleBorder>(
                RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(18.0), // 设置圆角
                  side: BorderSide(color: Colors.blue), // 设置边框样式
                ),
              ),
            ),
          ),
        ),
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('TextButton Example'),
      ),
      body: Center(
        child: TextButton(
          onPressed: () {},
          child: Text('Click Me'),
        ),
      ),
    );
  }
}