android.content.Context不能在没有@Provides注释的方法的情况下提供。

Question

android.content.Context不能在没有@Provides注释的方法的情况下提供。

androidkotlindependency-injectiondagger-2dagger-hilt

5

我在升级 Hilt 至 2.32-alpha 后遇到了以下错误。尽管我已经提供了相关元素，但还是报错了。我很确定这与作用域有关，但无法解决。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).

代码库: https://github.com/TheReprator/mobiquity/tree/hilt_scope_issue

谢谢,
Vikram Singh

- Reprator

问题已解决，只是有一个简单的错误。一位绅士协助我解决了这个问题。https://github.com/google/dagger/issues/2381 - Reprator

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- Younes Charfaoui · Answer 1

我认为你应该尝试使用@ActivityScoped或@ActivityRetainedScoped来注释提供的方法。另外，我注意到你的代码中关于AddLocationViewModal的部分，我认为你应该使用@HiltViewModel进行注释，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() {...}