Flutter/Dart :如何像TextFormField一样向单选按钮添加验证？

class MyForm extends StatefulWidget {
  @override
  _MyFormState createState() => _MyFormState();
}

class _MyFormState extends State<MyForm> {
  final _formKey = GlobalKey<FormState>();

  String _selectedOption;

  @override
  Widget build(BuildContext context) {
    return Form(
      key: _formKey,
      child: Column(
        children: [
          RadioListTile(
            title: Text('Option 1'),
            value: 'option1',
            groupValue: _selectedOption,
            onChanged: (value) {
              setState(() {
                _selectedOption = value;
              });
            },
          ),
          RadioListTile(
            title: Text('Option 2'),
            value: 'option2',
            groupValue: _selectedOption,
            onChanged: (value) {
              setState(() {
                _selectedOption = value;
              });
            },
          ),
          RaisedButton(
            onPressed: () {
              if (_formKey.currentState.validate()) {
                // 验证通过，执行提交操作
                // 可以在这里调用腾讯云相关产品进行数据处理或存储等操作
              }
            },
            child: Text('提交'),
          ),
        ],
      ),
    );
  }
}