Flutter2Start - Radio #flutter2start

main.dart

// ignore_for_file: use_key_in_widget_constructors, prefer_const_constructors, prefer_const_literals_to_create_immutables

import 'package:flutter/material.dart';

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

class App extends StatefulWidget {
  @override
  _AppState createState() => _AppState();
}

class _AppState extends State<App> {
  CardVariant cardVariantChosen = CardVariant.basic;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("Futter2Start"),
          centerTitle: true,
        ),
        body: Center(
          child: body(),
        ),
      ),
    );
  }

  Widget body() => Column(
        children: [
          RadioListTile<CardVariant>(
            value: CardVariant.basic,
            groupValue: cardVariantChosen,
            title: Text("Basic"),
            onChanged: (value) => setState(() => cardVariantChosen = value!),
          ),
          RadioListTile<CardVariant>(
            value: CardVariant.normal,
            groupValue: cardVariantChosen,
            title: Text("Normal"),
            onChanged: (value) => setState(() => cardVariantChosen = value!),
          ),
          RadioListTile<CardVariant>(
            value: CardVariant.pro,
            groupValue: cardVariantChosen,
            title: Text("Pro"),
            onChanged: (value) => setState(() => cardVariantChosen = value!),
          ),
        ],
      );
}

enum CardVariant {
  basic,
  normal,
  pro,
}