Flutter 入门

默认使用Material

// 导入必要的模块
import 'package:flutter/material.dart';

启动当前项目

// 入口函数为main
void main()
{
	runApp(const MyApp());
}

创建APP入口–MyApp()

// 无状态入口
class MyApp extends StatelessWidget {
	const MyApp({super.key});

	@override
	Widget build(BuildContext context){
		return MaterialApp(
			title: 'Demo',
			theme: ThemeData(
				primarySwatch: Colors.blue,
			),
			home: const MyHomePage(title: 'Demo'),
		);
	}
}

创建MyHomePage

class MyHomePage extends StatefulWidget {
	const MyHomePage({super.key, required this.title});
	final String title;

	@override
	State<MyHomePage> createState() => _MyHomePageState();
}

class MyHomePageState extends State<MyHomePage> {
	@override
	Widget build(BuildContext context) {
		return Scaffold(
			appBar...
		);
	}
}