Flutter DropdownButtonのアイコンの有効時の色を設定するサンプル
環境
Windows11 pro 64bit
Flutter 3.3.7
構文
DropdownButton(
iconEnabledColor: /*アイコンの有効時の色*/,
value: _text,
DropdownButton(
iconEnabledColor: /*アイコンの有効時の色*/,
value: _text,
DropdownButton( iconEnabledColor: /*アイコンの有効時の色*/, value: _text,
DropdownButtonの引数「iconEnabledColor」にアイコンの有効時の色を指定します。
使用例
class Sample extends StatefulWidget {
@override
_SampleState createState() => _SampleState();
}
class _SampleState extends State<Sample> {
var _text = 'study';
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: DropdownButton(
iconEnabledColor: Colors.pink,
value: _text,
items: [
DropdownMenuItem(
child: Text('study'),
value: 'study',
),
DropdownMenuItem(
child: Text('12345'),
value: '12345',
),
],
onChanged: (String? value) {
setState(() {
_text = value ?? 'study';
});
},
),
),
);
}
}
class Sample extends StatefulWidget {
@override
_SampleState createState() => _SampleState();
}
class _SampleState extends State<Sample> {
var _text = 'study';
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: DropdownButton(
iconEnabledColor: Colors.pink,
value: _text,
items: [
DropdownMenuItem(
child: Text('study'),
value: 'study',
),
DropdownMenuItem(
child: Text('12345'),
value: '12345',
),
],
onChanged: (String? value) {
setState(() {
_text = value ?? 'study';
});
},
),
),
);
}
}
class Sample extends StatefulWidget { @override _SampleState createState() => _SampleState(); } class _SampleState extends State<Sample> { var _text = 'study'; @override Widget build(BuildContext context) { return Scaffold( body: Center( child: DropdownButton( iconEnabledColor: Colors.pink, value: _text, items: [ DropdownMenuItem( child: Text('study'), value: 'study', ), DropdownMenuItem( child: Text('12345'), value: '12345', ), ], onChanged: (String? value) { setState(() { _text = value ?? 'study'; }); }, ), ), ); } }