質問編集履歴
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該当ソースコードを全文記載しました。
title
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File without changes
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body
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@@ -2,6 +2,7 @@
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flutter学習で画面遷移を実装しようとしています。
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KboyさんのYouTube動画を見て、写経していました。
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Navigate with named routesを使おうとしています。
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### 発生している問題・エラーメッセージ
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@@ -22,6 +23,14 @@
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### 該当のソースコード
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```dart
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//以下、main.dart
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import 'package:flutter/material.dart';
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void main() {
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runApp(MyApp());
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}
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class MyApp extends StatelessWidget {
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// This widget is the root of your application.
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@override
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@@ -33,17 +42,87 @@
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primarySwatch: Colors.blue,
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),
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initialRoute: '/',
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routes: {
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-
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'/': (context) => MyHomePage(),
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-
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-
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home: MyHomePage(title: 'Flutter Demo Home Page'),
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);
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-
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}
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}
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class MyHomePage extends StatefulWidget {
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MyHomePage({Key key, this.title}) : super(key: key);
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final String title;
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@override
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_MyHomePageState createState() => _MyHomePageState();
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}
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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void _incrementCounter() {
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setState(() {
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_counter++;
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(widget.title),
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),
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body: Center(
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child: RaisedButton(
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child: Text('次へ'),
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onPressed: (){
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Navigator.pushNamed(context, '/next');
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},
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),
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),
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floatingActionButton: FloatingActionButton(
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onPressed: _incrementCounter,
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tooltip: 'Increment',
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child: Icon(Icons.add),
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), // This trailing comma makes auto-formatting nicer for build methods.
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);
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}
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}
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//以下、next_page.dart
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import 'package:flutter/material.dart';
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class NextPage extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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// TODO: implement build
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return Scaffold(
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appBar: AppBar(
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title: Text('次の画面'),
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),
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body: Container(
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height: double.infinity,
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color: Colors.red,
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child: Center(
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child: RaisedButton(
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child: Text('戻る'),
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onPressed: () {
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Navigator.pop(context);
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},
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),
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),
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),
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);
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}
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+
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}
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```
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128
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