MyApp.dart

class MyApp extends StatelessWidget {
  final materialApp = MaterialApp(
    title: UIData.appName,
    theme: ThemeData(
        primaryColor: Colors.green,
        fontFamily: UIData.quickFont,
        primarySwatch: Colors.amber),
    home: HomePage(),
    initialRoute: null,
    routes: <String, WidgetBuilder>{
      UIData.homeRoute: (BuildContext context) => HomePage(),
      UIData.citiesRoute: (BuildContext context) => CitiesPage(),
      UIData.twitter: (BuildContext context) => TwitterPage(),
      UIData.teamRoute: (BuildContext context) => TeamsPage(),
      UIData.planRoute: (BuildContext context) => PlanPage(),
      UIData.quizRoute: (BuildContext context) => QuizPage(),
      UIData.impressionRoute: (BuildContext context) => ImpressionPage(),
  );

  @override
  Widget build(BuildContext context) {
    return materialApp;
  }
}

class UIData {
  //routes
  static const String homeRoute = "/home";
  static const String teamRoute = "/teams";
  static const String planRoute = "/plan";
  static const String citiesRoute = "/cities";
  static const String twitter = "/twitter";
  static const String quizRoute = "/quiz";
  static const String impressionRoute = "/impression";
}