从 Hilt 中的另一个 Gradle 模块注入实现

Question

我正在尝试使用 hilt 注入存储库的实现 class（接口位于 domain 模块中，实现位于 data 模块中 data 模块取决于 domain 一个）但是在构建应用程序时收到错误。这是我的设置

在domain模块中

interface RatesRepository {
    fun getRates(): Single<Rates>
}

在 data 模块中

class RatesRepositoryImpl @Inject constructor(
    private val rateDataSource: CurrencyExchangeDataSource,
    private val mapper: ExchangeResponseToRates
) : RatesRepository {
//..
}

@Module
@InstallIn(FragmentComponent::class)
interface DataModule {
    @Binds
    fun bindsRatesRepository(ratesRepositoryImpl: RatesRepositoryImpl): RatesRepository
}

并且数据将域声明为依赖项

编辑：我收到的错误：

error: [Dagger/MissingBinding] com.basil.domain_converter.repository.RatesRepository cannot be provided without an @Provides-annotated method.
  public abstract static class ApplicationC implements CurrenciesApp_GeneratedInjector,
                         ^
      com.basil.domain_converter.repository.RatesRepository is injected at
          com.basil.domain_converter.usecase.GetRatesUseCase(ratesRepository)
      javax.inject.Provider<com.basil.domain_converter.usecase.GetRatesUseCase> is injected at
          com.basil.ui_converter.ui.RatesViewModel_AssistedFactory(getRatesUseCase)
      com.basil.ui_converter.ui.RatesViewModel_AssistedFactory is injected at
          com.basil.ui_converter.ui.RatesViewModel_HiltModule.bind(arg0)
      java.util.Map<java.lang.String,javax.inject.Provider<androidx.hilt.lifecycle.ViewModelAssistedFactory<? extends androidx.lifecycle.ViewModel>>> is injected at
          androidx.hilt.lifecycle.ViewModelFactoryModules.ActivityModule.provideFactory(…, viewModelFactories)
      @dagger.hilt.android.internal.lifecycle.DefaultActivityViewModelFactory java.util.Set<androidx.lifecycle.ViewModelProvider.Factory> is requested at
          dagger.hilt.android.internal.lifecycle.DefaultViewModelFactories.ActivityEntryPoint.getActivityViewModelFactory() [com.basil.example.CurrenciesApp_HiltComponents.ApplicationC → com.basil.example.CurrenciesApp_HiltComponents.ActivityRetainedC → com.basil.example.CurrenciesApp_HiltComponents.ActivityC]
  The following other entry points also depend on it:
      dagger.hilt.android.internal.lifecycle.DefaultViewModelFactories.FragmentEntryPoint.getFragmentViewModelFactory() [com.basil.example.CurrenciesApp_HiltComponents.ApplicationC → com.basil.example.CurrenciesApp_HiltComponents.ActivityRetainedC → com.basil.example.CurrenciesApp_HiltComponents.ActivityC → com.basil.example.CurrenciesApp_HiltComponents.FragmentC]

Answer 1

合理的解释

您的 Scopes 似乎有问题。

您是 Installing 您在 FragmentComponent 中的 RatesRepository，但您正试图在更高级别的依赖项中使用它。我可以看到您正在尝试在 ViewModels 和 ViewModels do not relate to FragmentComponent but ActivityRetainedComponent.

中注入 RatesRepository

参见this graph：

解决方案

我希望 Repository 应该保留在 App 范围内，所以我会将您的设置修改为：

@Module
@InstallIn(ApplicationComponent::class)
interface DataModule {
    @Binds
    fun bindsRatesRepository(ratesRepositoryImpl: RatesRepositoryImpl): RatesRepository
}

如果 RatesRepositoryImpl 的依赖范围较窄，您可以尝试 ActivityRetainedComponent 而不是 ApplicationComponent。

从 Hilt 中的另一个 Gradle 模块注入实现

Injecting Implementations From Another Gradle Module in Hilt

android

dagger-hilt

合理的解释

解决方案