Object of type SharedPreferences is not registered inside GetIt

[Devlonoah]

This is what goes into my injection_container.dart file

final sl = GetIt.instance;
Future init() async {

//Bloc
  sl.registerFactory(
    () => NumberTriviaBloc(
      inputConverter: sl(),
      concrete: sl(),
      random: sl(),
    ),
  );

//Data - source
  sl.registerLazySingleton<NumberTriviaLocalDataSource>(
      () => NumberTriviaLocalDataSourceImpl(sl()));


//External
  sl.registerLazySingleton(() async => await SharedPreferences.getInstance());
  sl.registerLazySingleton(() => client.Client());
  sl.registerLazySingleton<DataConnectionChecker>(
      () => DataConnectionChecker());
}

And this is how I use it in main.dart

void main() async{
WidgetsFlutterBinding.ensureInitialized();
await di.init();

runApp(MyApp());
}

This is the error i get in my console
Exception: Object of type SharedPreferences is not registered inside GetIt

[Devlonoah]

I later got it solved by

Making the init function a asynchronous one using async

creating a variable to get an instance of Sharedpreference,

final spref =await SharedPreference.getInstance();

then sl.registerSingleton<SharedPreference>(() async => spref);

[escamoteur]

you should use registerAsyncSingleton for this