N
Příklady kódu
flutter přepínačů v pohotovosti dialoug
showDialog<void>(
context: context,
builder: (BuildContext context) {
int selectedRadio = 0;
return AlertDialog(
content: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Column(
mainAxisSize: MainAxisSize.min,
children: List<Widget>.generate(4, (int index) {
return Radio<int>(
value: index,
groupValue: selectedRadio,
onChanged: (int value) {
setState(() => selectedRadio = value);
},
);
}),
);
},
),
);
},flutter přepínač
// Outof class
enum SingingCharacter { lafayette, jefferson }
// declare object
SingingCharacter? _character = SingingCharacter.lafayette;
Radio<SingingCharacter>(
value: SingingCharacter.lafayette,
groupValue: _character,
onChanged: (SingingCharacter? value) {
setState(() {
_character = value;
}
);
},
),
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Související stránky s příklady
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