fabioCollini

-@MyFeatureScope
-class CityRepoImpl @Inject constructor(val app: Application) : CityRepo {
+class CityRepoImpl(val app: Application) : CityRepo {

    override suspend fun getCurrentCity(): String =
        //...
}
@Module
-abstract class MyFeatureModule {
-    @Binds

fabioCollini

@Module
class CoreModule {
    @Provides
    @Singleton
    fun providePrefs(app: Application): SharedPreferences =
        PreferenceManager.getDefaultSharedPreferences(app)
}

@Singleton
@Component(modules = [CoreModule::class])

fabioCollini

@MyFeatureScope
@Component(modules = [MyFeatureModule::class], dependencies = [CoreComponent::class])
interface MyFeatureComponent {
    val prefs: SharedPreferences
    val repo: CityRepo
}

fabioCollini

interface CityRepo {
    suspend fun getCurrentCity(): String
}

@MyFeatureScope
class CityRepoImpl @Inject constructor(val app: Application) : CityRepo {

    override suspend fun getCurrentCity(): String =
        //...
}

fabioCollini

@Module
abstract class MyFeatureModule {
    @Binds
    abstract fun bindCityRepo(impl: CityRepoImpl): CityRepo
}

fabioCollini

class MyViewModel @Inject constructor(
    private val repo: CityRepo
) : ViewModel() {
    //...
}

fabioCollini

@MyActivityScope
@Component(dependencies = [MyFeatureComponent::class])
interface MyActivityComponent {
    fun inject(activity: MyActivity)
}
class MyActivity : AppCompatActivity() {

    @Inject
    lateinit var viewModelProvider: Provider<MyViewModel>

fabioCollini

class CityRepoImpl(val app: Application) : CityRepo {

    override suspend fun getCurrentCity(): String =
        //...
}

fabioCollini

@Module
class MyFeatureModule {
    @Provides
    @MyFeatureScope
    fun provideCityRepo(app: Application): CityRepo = CityRepoImpl(app)
}

fabioCollini

class MyViewModel(
    private val repo: CityRepo
) : ViewModel() {
    //...
}