enum SingingCharacter { lafayette, jefferson }
SingingCharacter _character = SingingCharacter.lafayette;
@override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
RadioListTile<SingingCharacter>(
title: const Text('Lafayette'),
value: SingingCharacter.lafayette,
groupValue: _character,
onChanged: (SingingCharacter value) { setState(() { _character = value; }); },
),
RadioListTile<SingingCharacter>(
title: const Text('Thomas Jefferson'),
value: SingingCharacter.jefferson,
groupValue: _character,
onChanged: (SingingCharacter value) { setState(() { _character = value; }); },
),
],
);
}
