Flutter/dart: The getter 'id' isn't defined for the type 'WelcomeScreen'

Question

In 2nd dart file I have a class 'WelcomeScreen' with property-

  String id = 'welcome_screen';

I want to use it in 1st dart file and this is how I am doing it-

  initialRoute: WelcomeScreen().id,
  routes: {
    WelcomeScreen().id : (context) => WelcomeScreen(),

And then for id, flutter throws an error - The getter 'id' isn't defined for the type 'WelcomeScreen'

Answer 1

Make the id a static const field and use it without WelcomeScreen instantiation, i.e.:

  static const String id = 'welcome_screen';
  ...
  initialRoute: WelcomeScreen.id,
  routes: {
    WelcomeScreen.id : (context) => WelcomeScreen(),

Answer 2

you have to put inside class WelcomeScreen extends StatefulWidget {} then its will be work.