@Binds ViewModelProvider工厂无法为Dagger2 ViewModel提供问题

Question

我已经实现了对ViewModels注入的支持 medium article 和googleRepo

不幸的是，我得到了错误cannot be provided without an @Provides-annotated method.，但我无法找到错误的根源。

我已将项目迁移到AndroidX。我已经尝试了StackOverflow上的许多可用答案，但均未成功。

AppComponent

@Singleton
@Component(
        modules = [
            AndroidInjectionModule::class,
            AppModule::class,
            MainActivityModule::class,
            LoginActivityModule::class,
            DispatcherActivityModule::class]
)
interface AppComponent {

    @Component.Builder
    interface Builder {
        @BindsInstance
        fun application(application: Application): Builder

        fun build(): AppComponent
    }

    fun inject(androidApplication: BeeApp)
}

AppModule

@Module(includes = [ViewModelModule::class])
class AppModule {
...(i provide non-related other object here)
}

ViewModelModule

@Suppress("unused")
@Module
abstract class ViewModelModule {
    @Binds
    @IntoMap
    @ViewModelKey(UserProfileViewModel::class)
    abstract fun bindUserViewModel(userProfileViewModel: UserProfileViewModel): ViewModel

    @Binds
    abstract fun bindViewModelFactory(viewModelFactory: DaggerViewModelFactory): ViewModelProvider.Factory
}

DaggerViewModelFactory

@Singleton
@Suppress("UNCHECKED_CAST")
class DaggerViewModelFactory @Inject constructor(private val viewModelsMap: Map<Class<out ViewModel>, @JvmSuppressWildcards Provider<ViewModel>>) :
        ViewModelProvider.Factory {

    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        val creator = viewModelsMap[modelClass] ?: viewModelsMap.asIterable().firstOrNull {
            modelClass.isAssignableFrom(it.key)
        }?.value ?: throw IllegalArgumentException("unknown model class $modelClass")
        return try {
            creator.get() as T
        } catch (e: Exception) {
            throw RuntimeException(e)
        }
    }

}

片段

class UserProfileFragment : BaseFragment(), Injectable {

    @Inject
    lateinit var viewModelFactory: ViewModelProvider.Factory

    lateinit var profileViewModel: UserProfileViewModel

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)

        profileViewModel = ViewModelProviders.of(this, viewModelFactory)
                .get(UserProfileViewModel::class.java)
    }

(...)
}

ViewModel

class UserProfileViewModel @Inject constructor(userAccountRepository: UserAccountRepository) : ViewModel() {
    val userAccount: LiveData<Resource<UserAccount>> = userAccountRepository.loadUserAccount(true)

}

任何帮助将不胜感激。

Answer 1

这是由Kotlin kapt版本1.3.30 issue tracker

引起的

更改为先前版本/较新版本