Radio

class RadioDemo extends StatefulWidget {
  @override
  _RadioDemoState createState() => _RadioDemoState();
}

class _RadioDemoState extends State<RadioDemo> {
  int _radioGroupA = 0;

  void _handleRadioValueChanged(int value) {
    setState(() {
      _radioGroupA = value;
    });
  }

  @override
  Widget build(BuildContext context) {
    var radioDemo = Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Radio(
                      value: 0,
                      groupValue: _radioGroupA,//權(quán)組值
                      onChanged: _handleRadioValueChanged,
                      activeColor: Colors.black,//選中的顏色
                    ),
                    Radio(
                      value: 1,
                      groupValue: _radioGroupA,//權(quán)組值
                      onChanged: _handleRadioValueChanged,
                      activeColor: Colors.black,//選中的顏色
                    )
                  ],
                );
        return Scaffold(
          appBar: AppBar(
            title: Text('RadioDemo'),
            elevation: 0.0,
          ),
          body: Container(
            padding: EdgeInsets.all(16.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
               radioDemo,
          ],
        ),
      ),
    );
  }
}

RadioListTile

Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Text('RadioGroupValue:$_radioGroupA'),
                SizedBox(height: 32.0),
               RadioListTile(
                 value: 0,
                 groupValue: _radioGroupA,
                 onChanged: _handleRadioValueChanged,
                 title:Text('Option A') ,
                 subtitle: Text('Description'),
                 secondary: Icon(Icons.filter_1),//右側(cè)圖標(biāo)
                 selected: _radioGroupA == 0,
               ),
               RadioListTile(
                 value: 1,
                 groupValue: _radioGroupA,
                 onChanged: _handleRadioValueChanged,
                 title:Text('Option B') ,
                 subtitle: Text('Description'),
                 secondary: Icon(Icons.filter_2),//右側(cè)圖標(biāo)
                 selected: _radioGroupA == 1,
               ),
          ],
        ),

RadioGroupList.png