Flutter 实战：构建跨平台应用

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // 此处可以定义和管理应用程序的全局配置和资源
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
    );
  }
}

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  // 此处可以管理状态和渲染UI
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter 实战'),
      ),
      body: Center(
        child: Text('欢迎使用 Flutter 构建跨平台应用'),
      ),
    );
  }
}