Example 1: flutter radio button
@overrideWidget build(BuildContext context) { return new MaterialApp( home: new Scaffold( appBar: AppBar( title: new Text('Kids Quiz App'), centerTitle: true, backgroundColor: Colors.blue, ), body: new Container( padding: EdgeInsets.all(8.0), child: new Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ new Text( 'Select correct answers from below:', style: new TextStyle( fontSize: 20.0, fontWeight: FontWeight.bold), ), new Padding( padding: new EdgeInsets.all(8.0), ), new Divider(height: 5.0, color: Colors.black), new Padding( padding: new EdgeInsets.all(8.0), ), new Text( 'Lion is :', style: new TextStyle( fontWeight: FontWeight.bold, fontSize: 18.0, ), ), new Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ new Radio( value: 0, groupValue: _radioValue1, onChanged: _handleRadioValueChange1, ), new Text( 'Carnivore', style: new TextStyle(fontSize: 16.0), ), new Radio( value: 1, groupValue: _radioValue1, onChanged: _handleRadioValueChange1, ), new Text( 'Herbivore', style: new TextStyle( fontSize: 16.0, ), ), new Radio( value: 2, groupValue: _radioValue1, onChanged: _handleRadioValueChange1, ), new Text( 'Omnivore', style: new TextStyle(fontSize: 16.0), ), ], ),
Example 2: flutter radio button example
@override Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: AppBar(
title: new Text('Quiz App'),
centerTitle: true,
backgroundColor: Colors.blue,
),
body: new Container(
padding: EdgeInsets.all(8.0),
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Text(
'Select correct answers from below:',
style: new TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold),
),
new Padding(
padding: new EdgeInsets.all(8.0),
),
new Divider(height: 5.0, color: Colors.black),
new Padding(
padding: new EdgeInsets.all(8.0),
), new Text(
'Lion is :',
style: new TextStyle(
fontWeight: FontWeight.bold,
fontSize: 18.0,
),
),
new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Radio(
value: 0,
groupValue: _radioValue1,
onChanged: _handleRadioValueChange1,
),
new Text(
'Carnivore',
style: new TextStyle(fontSize: 16.0),
),
new Radio(
value: 1,
groupValue: _radioValue1,
onChanged: _handleRadioValueChange1,
),
new Text(
'Herbivore',
style: new TextStyle(
fontSize: 16.0,
),
),
new Radio(
value: 2,
groupValue: _radioValue1,
onChanged: _handleRadioValueChange1,
),
new Text(
'Omnivore',
style: new TextStyle(fontSize: 16.0),
),
],
),