如何解决 getit 共享首选项错误？

Question

I'm trying bloctesting for my project and getting the following error:

 'package:get_it/get_it_impl.dart': Failed assertion: line 372 pos 7: 'instanceFactory:= null'. Object/factory with type SharedPreferences is not registered inside GetIt. (Did you accidentally do GetIt sl=GetIt;instance(). instead of GetIt sl=GetIt;instance? Did you forget to register it )

Below are my sharedpreferences injection files

shared_preference_injection_configuration.dart

 import 'package:get_it/get_it.dart'; import 'package:injectable/injectable.dart'; import 'package:shared_preferences/shared_preferences.dart'; final GetIt getIt = GetIt.instance; @injectableInit Future<void> configureInjection(String env) async { await $initGetIt(getIt, environment: env); } Future<void> initDependencies() async { await _initSharedPref(); } Future<void> _initSharedPref() async { final SharedPreferences sharedPref = await SharedPreferences.getInstance(); getIt.registerSingleton<SharedPreferences>(sharedPref); }

shared_preference_injection.dart

 import 'package:injectable/injectable.dart'; import 'package:shared_preferences/shared_preferences.dart'; @module abstract class InjectionModule { //injecting third party libraries @preResolve Future<SharedPreferences> get prefs => SharedPreferences.getInstance(); }

Below lies the main method.It already has the configureinjection and initdependencies method but still gives me the same error.

main.dart

 void main() async { // Make sure all bindings are loaded for easy localization WidgetsFlutterBinding.ensureInitialized(); await EasyLocalization.ensureInitialized(); await configureInjection(Environment.prod); await initDependencies(); // ignore: always_specify_types EasyLocalization.logger.enableBuildModes = []; // Load bloc Observer for debugging BlocOverrides.runZoned(() => SimpleBlocObserver()); // Define main breakpoints for responsive_builder ResponsiveSizingConfig.instance.setCustomBreakpoints( const ScreenBreakpoints(desktop: PDesktopSize, tablet: PTabletSize, watch: PWatchSize), ); // Set default locale to german style // Intl.defaultLocale = 'de_DE'; // Load bloc Observer for debugging runZonedGuarded( () async { await BlocOverrides.runZoned( // Main Entry Point for our application // Translations wrapping around the whole app and start the structure for Cecht () async => runApp( EasyLocalization( supportedLocales: const <Locale>[ Locale('en'), Locale('de'), ], path: 'assets/translations_v5', fallbackLocale: const Locale('de'), child: MyApp(), ), ), blocObserver: SimpleBlocObserver(), ); }, (Object error, StackTrace stackTrace) => Logger().logWarning('${error.toString()} $stackTrace'), ); }

Answer 1

Okay so when you're doing blocTesting then you need to register your packages again in the setup function in it which is in the case you are using getit for dependency injection.