是否在Flutter中展开应用程序栏以允许多行标题？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          flexibleSpace: FlexibleSpaceBar(
            title: Text(
              '多行标题示例',
              style: TextStyle(
                fontSize: 20.0,
                fontWeight: FontWeight.bold,
              ),
            ),
            centerTitle: false,
            titlePadding: EdgeInsets.only(left: 16.0, bottom: 8.0),
            collapseMode: CollapseMode.parallax,
          ),
        ),
        body: Container(
          child: Center(
            child: Text(
              '这是一个多行标题示例',
              style: TextStyle(fontSize: 24.0),
            ),
          ),
        ),
      ),
    );
  }
}