I feel like I m getting some conflicting info with hilt and assisted injection I currently have this ```class GetTeamsUseCase Inject constructor val apiService ApiService lt provided by a Provides method val accessToken String lt I d like to inject this at runtime since I get it once I login ``` Is this possible to do or do I need some other lirbary

class GetTeamsUseCase @Inject constructor(
  val apiService: ApiService, <---- provided by a @Provides method
  val accessToken: String <---- I'd like to "inject" this at runtime since I get it once I login
) {

Is this possible to do or do I need some other lirbary?

Manuel Vivo

01/27/2023, 7:31 AM

It’s possible to do with Assisted Injection Dagger’s https://dagger.dev/dev-guide/assisted-injection.html

Instead of

@Inject

you need to use

@AssistedInject

, specify the

@Assisted

params and create a factory for it. However, you need to manually construct that type by injecting the factory and creating an instance of it in the class where you have access to

accessToken

Colton Idle

01/27/2023, 7:50 AM

Cool! First time trying assistedInject out so lets see what happens

I created

@AssistedFactory
interface GetTeamsUseCaseFactory {
  fun create(accessToken: String): GetTeamsUseCase
}

Should I put this inside of my GetTeamsUseCase class or outside of it?

Is this basically how I should do it?

@Inject lateinit var teamsUseCaseFactory: GetTeamsUseCaseFactory
lateinit var teamsUseCase: GetTeamsUseCase

fun setupService(): GetTeamsUseCase {
  val service = teamsUseCaseFactory.create(//my access token)
  return service
}

@OptIn(ExperimentalMaterial3Api::class)
override fun onCreate(savedInstanceState: Bundle?) {
  super.onCreate(savedInstanceState)
  teamsUseCase = setupService()

Manuel Vivo

01/27/2023, 8:23 AM

Should I put this inside of my GetTeamsUseCase class or outside of it?

It’s fine to leave it in or at least in the same file

Is this basically how I should do it?

Yup, that looks good to me

Colton Idle

01/27/2023, 8:30 AM

Interesting. pretty basic then. nothing too crazy.

awesome. now i have tests working.

❤️ thanks @Manuel Vivo

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