// 不清楚需求一律使用有状态组件 import 'package:flutter/material.dart'; class LoginPage extends StatefulWidget { const LoginPage({super.key}); @override State createState() => _LoginPageState(); } class _LoginPageState extends State { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text("Login"), ), body: Center( child: Text("This is the login page."), ), ); } }