Hello Abir, can you provide a sample?

I’m facing a problem where I have an Activity with 2 ViewModels and I’m getting

cannot be provided without an @Inject constructor or an @Provides-annotated method.

for the second. I was doing something like this:

BaseActivityModule:

@Module
abstract class BaseActivityModule<A : AppCompatActivity> {
    @Binds
    abstract fun provideActivity(activity : A): AppCompatActivity

    @Binds
    internal abstract fun bindSavedStateRegistryOwner(activity : A): SavedStateRegistryOwner

    @Module
    companion object {
        @Provides
        @ActivityContext
        fun provideContext(activity: AppCompatActivity): Context = activity
    }
}

SampleActivityModule:

@Module
abstract class SampleActivityModule : BaseActivityModule<SampleActivity>() {

    @Binds
    @IntoMap
    @ViewModelKey(SampleActivityViewModelA::class)
    abstract fun bindFactory(factory: SampleActivityViewModelA.Factory): ViewModelAssistedFactory<out ViewModel>

    @Binds
    @IntoMap
    @ViewModelKey(SampleActivityB::class)
    abstract fun bindFactory2(factory: SampleActivityBViewModel.Factory): ViewModelAssistedFactory<out ViewModel>

    @Module
    companion object{
        @JvmStatic
        @Nullable
        @Provides
        fun provideDefaultArgs(): Bundle? {
            return null
        }
    }
}

And the ViewModels:

A:

class SampleActivityViewModelA @AssistedInject constructor(
    @Assisted stateHandle: SavedStateHandle, ...) : BaseViewModel(stateHandle, ...) {

    @AssistedInject.Factory
    interface Factory : ViewModelAssistedFactory<SampleActivityViewModelA>

B:

class SampleActivityViewModelB @AssistedInject constructor(
    @Assisted stateHandle: SavedStateHandle, ...) : BaseViewModel(stateHandle, ...) {

    @AssistedInject.Factory
    interface Factory : ViewModelAssistedFactory<SampleActivityViewModelB>

But it fails :/

EDIT: so it turns out I was doing things right, just one piece off the puzzle missing. Check it here.