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。
test
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File without changes
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test
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@@ -6,6 +6,8 @@
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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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@@ -46,6 +48,22 @@
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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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@@ -68,7 +86,193 @@
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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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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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### 試したこと
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```
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home: MyHomePage(title: 'Flutter Demo Home Page'),
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```
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の記述を削除後、initialRoute以下を追加した際にエラーが起きました。
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269
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（その前まではエラーなく動きました。）
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270
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271
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```dart
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272
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//以下を追加
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-
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initialRoute: '/',
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routes: {
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74
278
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@@ -82,52 +286,6 @@
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82
286
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83
287
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},
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84
288
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85
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-
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86
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-
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87
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);
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88
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}
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}
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94
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-
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95
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```
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96
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-
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97
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98
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99
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### 試したこと
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100
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-
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101
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-
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102
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-
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103
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```
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104
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-
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105
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home: MyHomePage(title: 'Flutter Demo Home Page'),
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106
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-
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107
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```
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108
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-
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の記述を削除後、initialRoute以下を追加した際にエラーが起きました。
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110
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-
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111
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（その前まではエラーなく動きました。）
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112
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-
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113
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```dart
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114
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-
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115
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//以下を追加
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116
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initialRoute: '/',
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routes: {
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'/': (context) => MyHomePage(),
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'/next': (context) => NextPage(),
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},
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-
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131
289
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```
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132
290
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133
291
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