How to use Async?

[RakaAlrian]

Hello, I have future function to load color from json file like this

Future<ColorKey> load() async {
    final path = "assets/colors/light.json";
    final strJson = await rootBundle.loadString(path);
    Map<String, dynamic> data = jsonDecode(strJson);

    return ColorKey(Map<String, String>.from(data));
  }

I tried to register that function using get_it like this
serviceLocator.registerFactoryAsync<ColorKey>(() => ColorBase().load());
and this
serviceLocator.registerLazySingletonAsync<ColorKey>(() => ColorBase().load());
but both shows error.

Then I tried this

final color = await ColorBase().load();
serviceLocator.registerFactory<ColorKey>(() => color);

and this

final color = await ColorBase().load();
serviceLocator.registerLazySingleton<ColorKey>(() => color);

both are working, but then when I pass ContextUtils as parameter to load() function like this

serviceLocator.registerFactoryParam<ContextUtils, BuildContext, void>((context, _) => ContextUtilsImpl(context));

final color = await ColorBase().load(serviceLocator());
serviceLocator.registerLazySingleton<ColorKey>(() => color);

it's not working, and I got this error 'context != null': is not true.
Any suggestion?

[escamoteur]

Hi,
two problems in your code

1. add an async to your registration

`serviceLocator.registerFactoryAsync(() async => ColorBase().load());

2. Where do you access ContextUtils when you get this error?