如何在颤动中设置RadioButtonListTile中右侧的单选按钮

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('RadioButtonListTile Example'),
        ),
        body: Center(
          child: MyRadioButtonListTile(),
        ),
      ),
    );
  }
}

class MyRadioButtonListTile extends StatefulWidget {
  @override
  _MyRadioButtonListTileState createState() => _MyRadioButtonListTileState();
}

class _MyRadioButtonListTileState extends State<MyRadioButtonListTile> {
  int _selectedValue;

  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        RadioListTile(
          title: Text('Option 1'),
          value: 1,
          groupValue: _selectedValue,
          onChanged: (value) {
            setState(() {
              _selectedValue = value;
            });
          },
          activeColor: Colors.blue, // 设置选中时单选按钮的颜色
        ),
        RadioListTile(
          title: Text('Option 2'),
          value: 2,
          groupValue: _selectedValue,
          onChanged: (value) {
            setState(() {
              _selectedValue = value;
            });
          },
          activeColor: Colors.red, // 设置选中时单选按钮的颜色
        ),
        RadioListTile(
          title: Text('Option 3'),
          value: 3,
          groupValue: _selectedValue,
          onChanged: (value) {
            setState(() {
              _selectedValue = value;
            });
          },
          activeColor: Colors.green, // 设置选中时单选按钮的颜色
        ),
      ],
    );
  }
}