flutter flat radio button code example
Example: 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), ), ], ),