■ import 키워드를 사용해 파일을 분할하는 방법을 보여준다.
▶ person.dart
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class Person { String name; int age; Person(this.name, this.age); } |
▶ detail_page.dart
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import 'package:flutter/material.dart'; import 'package:test_app/person.dart'; class DetailPage extends StatelessWidget { final Person person; DetailPage({@required this.person}); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Test Application / Detail Page'), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text( '${person.name}, ${person.age}' ), SizedBox( height: 10, ), RaisedButton( child: Text('메인 페이지'), color: Colors.orange, onPressed: () { Navigator.pop(context, 'OK'); }, ) ], ), ), ); } } |
▶ main_page.dart
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import 'package:flutter/material.dart'; import 'package:test_app/person.dart'; import 'package:test_app/detail_page.dart'; class MainPage extends StatefulWidget { @override _MainPageState createState() => _MainPageState(); } class _MainPageState extends State<MainPage> { String _result; @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Test Application / Main Page'), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ RaisedButton( child: Text('상세 페이지'), color: Colors.orange, onPressed: () async { setState(() { _result = ''; }); final Person person = Person('홍길동', 20); final result = await Navigator.push( context, MaterialPageRoute(builder: (context) => DetailPage(person: person)), ); setState(() { _result = result; }); }, ), Text( '결과 : $_result', ), ], ), ), ); } } |
▶ main.dart
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import 'package:flutter/material.dart'; import 'package:test_app/main_page.dart'; void main() { runApp(TestApplication()); } class TestApplication extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Test Application', theme: ThemeData( primarySwatch: Colors.blue, ), home: MainPage(), ); } } |