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android - 如果没有 @Provides-annotated 方法，就无法提供 android.content.Context

问题描述

在刀柄更新到 2.32-alpha 后，我收到以下错误。

即使在提供了相关元素之后，它也在抱怨它。我很确定它与范围有关，但无法整理出来，日志如下，

  ^C:\Users\VikramSingh\Desktop\work\Mine\mobiquity\app\build\generated\source\kapt\debug\reprator\mobiquity\MobiQuityApp_HiltComponents.java:145: error: [Dagger/MissingBinding] @dagger.hilt.android.qualifiers.ActivityContext android.content.Context cannot be provided without an @Provides-annotated method.
 public abstract static class SingletonC implements HiltWrapper_ActivityRetainedComponentManager_ActivityRetainedComponentBuilderEntryPoint,
                     ^
 A binding with matching key exists in component: reprator.mobiquity.MobiQuityApp_HiltComponents.ActivityC
  @dagger.hilt.android.qualifiers.ActivityContext android.content.Context is injected at
      reprator.mobiquity.addcity.di.AddCityModule.provideGeoCoder(context)
  android.location.Geocoder is injected at
      reprator.mobiquity.addcity.di.AddCityModule.provideReverseGeoCoding(geoCoder)
  reprator.mobiquity.addcity.ReverseGeoCoding is injected at
      reprator.mobiquity.addcity.AddLocationViewModal(�, reverseGeoCoding, �)
  reprator.mobiquity.addcity.AddLocationViewModal is injected at
      reprator.mobiquity.addcity.AddLocationViewModal_HiltModules.BindsModule.binds(arg0)
  @dagger.hilt.android.internal.lifecycle.HiltViewModelMap java.util.Map<java.lang.String,javax.inject.Provider<androidx.lifecycle.ViewModel>> is requested at
      dagger.hilt.android.internal.lifecycle.HiltViewModelFactory.ViewModelFactoriesEntryPoint.getHiltViewModelMap() [reprator.mobiquity.MobiQuityApp_HiltComponents.SingletonC ? reprator.mobiquity.MobiQuityApp_HiltComponents.ActivityRetainedC ? reprator.mobiquity.MobiQuityApp_HiltComponents.ViewModelC][WARN] Incremental annotation processing requested, but support is disabled because the following processors are not incremental: androidx.room.RoomProcessor (DYNAMIC).

存储库：https ://github.com/TheReprator/mobiquity/tree/hilt_scope_issue

问候，维克拉姆·辛格

标签： androidkotlindependency-injectiondagger-2dagger-hilt

解决方案

我认为您应该尝试使用@ActivityScopedor注释提供方法@ActivityRetainedScoped，并且我在您的代码中注意到有关 AddLocationViewModal 的另一件事，我认为您应该使用注释@HiltViewModel并使其类似于以下代码：

@HiltViewModel
class AddLocationViewModal @Inject constructor(
    private val savedStateHandle: SavedStateHandle,
    private val appCoroutineDispatchers: AppCoroutineDispatchers,
    private val reverseGeoCoding: ReverseGeoCoding,
    private val locationUseCase: LocationUseCase
) : ViewModel() {...}

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