route_example.dart

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Management App',
      theme: defaultTargetPlatform == TargetPlatform.iOS
          ? Themes.kIOSTheme
          : Themes.kDefaultTheme,
      home: SplashScreen(),
      routes: <String, WidgetBuilder> { 
        '/screen1': (BuildContext context) => new Screen1(), 
        '/screen2' : (BuildContext context) => new Screen2(), 
      },
    );
  }
}