consult radio button

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool radioValue = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          children: [
            ListTile(
              leading: Radio<bool>(
                value: false,
                groupValue: radioValue,
                onChanged: (value) {
                  setState(() {
                    radioValue = value!;
                  });
                },
              ),
              title: Text('False'),
            ),
            ListTile(
              leading: Radio<bool>(
                value: true,
                groupValue: radioValue,
                onChanged: (value) {
                  setState(() {
                    radioValue = value!;
                  });
                },
              ),
              title: Text('True'),
            ),
            Text('Current value is ${radioValue} ')
          ],
        ),
      ),
    );
  }
}