FeatureActivity.kt

class FeatureActivity : AppCompatActivity(R.layout.feature_activity) {

    @Inject
    @UserModelSingletonQualifier
    lateinit var singletonUserModel: UserModel

    @Inject
    lateinit var savedStateViewModelFactory: DFMSavedStateViewModelFactory

    private val featureActivityViewModel by viewModels<FeatureActivityViewModel> { savedStateViewModelFactory }

    override fun onCreate(savedInstanceState: Bundle?) {
        inject()
        super.onCreate(savedInstanceState)

        Timber.e("singleton userModel = $singletonUserModel")
        singletonUserModel.value += " => FeatureActivity"
        Timber.e("userModel = ${featureActivityViewModel.userModel}")
    }
}

FeatureActivityInjection.kt

fun FeatureActivity.inject() {
    DaggerFeatureActivityComponent.factory()
        .featureActivityComponent(
            this,
            EntryPointAccessors.fromApplication(
                applicationContext,
                CoreModuleDependencies::class.java
            )
        )
        .inject(this)
}

@Component(
    dependencies = [CoreModuleDependencies::class],
    modules = [FeatureActivityModule::class]
)
interface FeatureActivityComponent {

    fun inject(activity: FeatureActivity)

    fun activity(): Activity

    @Component.Factory
    interface Factory {
        fun featureActivityComponent(
            @BindsInstance activity: Activity,
            loginModuleDependencies: CoreModuleDependencies
        ): FeatureActivityComponent
    }
}

@Module(includes = [FeatureActivityViewModel_HiltModule::class, ActivityViewModelModule::class])
@InstallIn(ActivityComponent::class)
abstract class FeatureActivityModule {

    companion object {

        @Provides
        @UserModelFeatureQualifier
        fun provideUserModel() = UserModel(value = "FeatureActivity")
    }
}

FeatureActivityViewModel.kt

class FeatureActivityViewModel @ViewModelInject constructor(
    @UserModelFeatureQualifier val userModel: UserModel,
    @Assisted private val savedStateHandle: SavedStateHandle
) : ViewModel() {
}

Mình update androidx.hilt:hilt-common:1.0.0-beta01
và com.google.dagger:hilt-android:2.33-beta thì bị lỗi, Nhờ bạn support