Actually I was trying to add genearatedRoute but i was facing this error A value of type 'Null' can't be returned from the method 'onGenerateRoute' because it has a return type of 'Route' Below is my code

class AppRouter {
   Route onGenerateRoute(RouteSettings routeSettings) {
    switch (routeSettings.name) {
      case '/':
        return MaterialPageRoute(builder: (_) => const SplashScreen());
        break;
      default:
        return null;
    }
  }
}

CodePudding user response：

Below code fixed the issue for me

class AppRouter {
  Route? onGenerateRoute(RouteSettings routeSettings) {
    switch (routeSettings.name) {
      case '/':
        return MaterialPageRoute(builder: (_) => const SplashScreen());
        break;
      default:
        return null;
    }
  }
}

CodePudding user response：

It is because you have null returning in default, and you must return Route object from function. To properly fix it, maybe in default option specify route to home screen.