import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(useMaterial3: false),
      title: 'Flutter Demo',
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title, style: TextStyle(fontFamily: 'ProductSans')),
      ),
      body: ListView(
        children: [
          Text('Checkbox is ${_checked ? 'checked' : 'unchecked'}.'),
          CheckboxListTile(
            title: Text('Checkbox'),
            value: _checked,
            onChanged: (value) {
              if (value == null) return;
              setState(() {
                _checked = value;
              });
            },
          ),
          Text('Switch is ${_toggled ? 'toggled' : 'untoggled'}.'),
          SwitchListTile(
            title: Text('Switch'),
            value: _toggled,
            onChanged: (value) {
              setState(() {
                _toggled = value;
              });
            },
          ),
        ],
      ),
    );
  }
}