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Android Dagger 2 Some Constructors can't Inject into ViewModel

I want to Inject my Room Repositories and Rest Repositories into my ViewModel class. However, I can inject rest repository but, when I try to inject room repository, it gives error.

class RestRepository @Inject constructor(private val restService: RestService)
fun register(username: String, password: String, email: String): Single<NormalResponse>
return restService.register(username, password, email)


fun createAuthToken(username: String, password: String): Single<TokenResponse>
return restService.createAuthToken(username, password)



class MessageRepository @Inject constructor(private val messageDao: MessageDao)
val all: List<Message> get() = messageDao.getAll

fun insert(vararg messages: Message)
messageDao.insert(*messages)


fun update(message: Message)
messageDao.update(message)


fun delete(message: Message)
messageDao.delete(message)



@Module
class RestModule
@Provides
internal fun provideRetrofit(): Retrofit
return Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build()


@Provides
internal fun provideService(retrofit: Retrofit): RestService
return retrofit.create<RestService>(RestService::class.java)


@Provides
internal fun provideRepository(restService: RestService): RestRepository
return RestRepository(restService)



@Module(includes = [ApplicationModule::class])
class RoomModule
@Provides
internal fun provideRoomDatabase(context: Context): AppDatabase
return AppDatabase.getAppDatabase(context)


@Provides
internal fun provideMessageDao(appDatabase: AppDatabase): MessageDao
return appDatabase.messageDao()


@Provides
internal fun provideMessageRepository(messageDao: MessageDao): MessageRepository
return MessageRepository(messageDao)



@Module
abstract class MainFragmentBindingModule
@ContributesAndroidInjector(modules = [ApplicationModule::class, UtilsModule::class, RestModule::class, RoomModule::class])
internal abstract fun provideChatFragmentFactory(): ChatFragment


class ChatViewModel @Inject constructor(val restRepository: RestRepository, val messageRepository: MessageRepository) : ViewModel()




And error is like that:

error: [dagger.android.AndroidInjector.inject(T)] me.ibrahimsn.capsules.data.local.message.MessageDao cannot be provided without an @Provides-annotated method.

Edit: Solution https://stackoverflow.com/a/51783147/10203775

Inject

RestService

MessageRepository

MessageRepository

RestRepository

Middleman

1 Answer
1

I fixed the problem, thanks..

@Module(includes = [(ViewModelModule::class)])
class ApplicationModule

@Provides
@Singleton
internal fun provideRetrofit(): Retrofit
return Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build()


@Provides
@Singleton
internal fun provideRetrofitService(retrofit: Retrofit): RestService
return retrofit.create<RestService>(RestService::class.java)


@Provides
@Singleton
internal fun provideRoomDatabase(app: Application): AppDatabase
return AppDatabase.getAppDatabase(app)


@Provides
@Singleton
internal fun provideMessageDao(appDatabase: AppDatabase): MessageDao
return appDatabase.messageDao()



@Singleton
class MessageRepository @Inject constructor(private val messageDao: MessageDao)

val all: List<Message> get() = messageDao.getAll

fun insert(vararg messages: Message)
messageDao.insert(*messages)


fun update(message: Message)
messageDao.update(message)


fun delete(message: Message)
messageDao.delete(message)




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