I feel like I'm getting some conflicting info with hilt and assisted injection. I currently have th...

# dagger

[Colton Idle]

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, <---- 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]

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

[Manuel Vivo]

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]

Cool!

First time trying assistedInject out so lets see what happens

[Colton Idle]

I created

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

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

[Colton Idle]

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]

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]

Interesting. pretty basic then. nothing too crazy.

[Colton Idle]

awesome. now i have tests working.

[Colton Idle]

❤️ thanks @Manuel Vivo