質問編集履歴
1
createState()を含むクラスの記述を加筆
test
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File without changes
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test
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@@ -3,8 +3,12 @@
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3
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Flutterを最近始めたのですが、私がインストールしたFlutterでは、新しいプロジェクトを作成した際に生成される`main.dart`の中で、以下のような変更があったようです。
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4
4
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```dart
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5
5
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//旧
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6
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+
class MyHomePage extends StatefulWidget {
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7
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MyHomePage({Key key, this.title}) : super(key: key);
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8
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...
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6
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-
@override
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9
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@override
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-
_MyHomePageState createState() => _MyHomePageState();
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_MyHomePageState createState() => _MyHomePageState();
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11
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}
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12
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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@@ -12,8 +16,12 @@
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12
16
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}
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//新
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19
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class MyHomePage extends StatefulWidget {
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20
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const MyHomePage({super.key, required this.title});
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...
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15
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-
@override
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22
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@override
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16
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-
State<MyHomePage> createState() => _MyHomePageState();
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23
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State<MyHomePage> 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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