Flutter:在文本小部件中添加新行

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('Text Widget Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text('Hello\nWorld'),
              SizedBox(height: 20),
              RichText(
                text: TextSpan(
                  children: [
                    TextSpan(text: 'Hello'),
                    TextSpan(text: '\n'),
                    TextSpan(text: 'World'),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}