Kotlin Dagger 2 无法提供 Interactor

Question

我开始使用 Dagger 2 并遇到了奇怪的问题。我有 4 个模块，其中 3 个在 ApplicationComponent 中，另一个具有不同的范围 (UsersScope)。

将 UsersInteractor 注入 UsersPresenter

时出现问题

Error:[BlankFragment)] com.interactors.UsersInteractor cannot be provided without an @Inject constructor or from an @Provides-annotated method.

这是我的类

@Singleton
@Component(modules = arrayOf(ApplicationModule::class, NetworkModule::class, DbModule::class))
interface ApplicationComponent {
    fun plusUsersComponent(usersModule: UsersModule): UsersComponent
}


@Module
class ApplicationModule(private val context: Context) {
@Provides
@Singleton
    fun provideContext(): Context = context
}

@Subcomponent(modules = arrayOf(UsersModule::class))
@UsersScope
interface UsersComponent {
    fun inject(blankFragment: BlankFragment)
}

@Module
class UsersModule {

@Provides
@UsersScope
fun provideUsersRepository(restService: RestService, dbService: DbService): IUsersRepository =
    UsersRepository(restService, dbService)

@Provides
@UsersScope
fun provideUsersInteractor(usersRepository: UsersRepository): IUsersInteractor =
    UsersInteractor(usersRepository)

@Provides
@UsersScope
fun provideUsersPresenter(usersInteractor: UsersInteractor): IUsersPresenter =
    UsersPresenter(usersInteractor)
}

@Scope
@Retention(AnnotationRetention.RUNTIME)
annotation class UsersScope

Answer 1

Dagger 没有 UsersInteractor，因为您只提供 IUsersInteractor。

将您的演示者提供程序方法切换为使用 IUsersInteractor，它应该可以工作

fun provideUsersPresenter(usersInteractor: IUsersInteractor)

Kotlin Dagger 2 无法提供 Interactor

Kotlin Dagger 2 cannot provide Interactor

kotlin

dagger-2