Android Hilt - multi module project cast error

Question

I am trying to use hilt for my project which contains dynamic features. I am facing an error that I cannot fully understand why. I get an error like this:

java.lang.ClassCastException: com.social.analysis.DaggerApp_HiltComponents_ApplicationC$ActivityRetainedCImpl$ActivityCImpl$FragmentCImpl cannot be cast to com.social.login.intro.IntroFragment_GeneratedInjector
    at com.social.login.intro.Hilt_IntroFragment.inject(Hilt_IntroFragment.java:94)
    at com.social.login.intro.Hilt_IntroFragment.initializeComponentContext(Hilt_IntroFragment.java:58)
    at com.social.login.intro.Hilt_IntroFragment.onAttach(Hilt_IntroFragment.java:50)
    at androidx.fragment.app.Fragment.onAttach(Fragment.java:1602)
    at com.social.login.intro.Hilt_IntroFragment.onAttach(Hilt_IntroFragment.java:40)

My ViewModel in LOGİN MODULE (dynamic features)

class IntroViewModel @Inject constructor(): ViewModel() {
// TODO: Implement the ViewModel
}

My Fragment in LOGIN MODULE

@AndroidEntryPoint
class IntroFragment : BaseFragment<FragmentIntroBinding, IntroViewModel>(
R.layout.fragment_intro
) {

companion object {
    fun newInstance() = IntroFragment()
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
}

override fun onInitDataBinding() {
    viewBinding.viewModel = viewModel
}
}

My Base Fragment in UI Module

abstract  class BaseFragment <B: ViewDataBinding, M: ViewModel>(
@LayoutRes
private val layoutId: Int
): Fragment() {

@Inject
lateinit var viewModel: M
lateinit var viewBinding: B
...

My Application Class in App Module

@HiltAndroidApp
class App : SplitCompatApplication() {
}

My Main Activity in App Module

@AndroidEntryPoint
class MainActivity : AppCompatActivity() 

I call the IntroFragment from the App module. Then the application crashes.

The project structure looks like this:

Tinnitus

You should use dagger2 instead of hilt when using dynamic feature module – Uniformitarian

did you ever solve this issue? – Cabbage

A dagger should be used instead of a dagger-hilt. – Tinnitus

I am having this problem even without dynamic features... I have my activity in a simple "com.android.library". @MuratAKSU the only solution you found was to use dagger2? – Shipway

As far as I know, this problem only happens when using the dynamic features module. Something else could be causing the error. @Shipway – Tinnitus

@MuratAKSU you are totally right. After a clean and rebuild it worked. – Shipway

Have you solved this issue? And how – Cigar

i am facing similar situation so far no solution – Balkanize

me too @MohammadMuddasir, app crashes when my dynamic feature fragment is annotated with AndroidEntryPoint – Nonparticipating

Hi guys, same problem here when trying to use Hilt, anyone available to help? I tried all the solutions but without success Any luck? @kakaranara – Ichang

Answer 1

From an answer to a similar question:

Delete the .gradle directory (in the project base directory) Invalidate Caches and restart Android Studio.

Lucinalucinda

I had the same problem and this solved it for me thanks – Nikolenikoletta

Crown this guy! – Bushbuck

Answer 2

If you are using dynamic feature module, don't forget to remove @AndroidEntryPoint annotation. Because the annotation is from Hilt and you used the Dagger2 as DI.

Lilybelle

Answer 3

For me the problem was I created the EntryPointAccessors from a different scope. Ensure your module and entry point scope is similar to the EntryPointAccessors creation.

Use this if your module scope is Singleton

@EntryPoint
@InstallIn(SingletonComponent::class)
interface ChatModuleDependencies {

    fun timeHelper(): TimeHelper

}

EntryPointAccessors.fromApplication(
    applicationContext,
    ChatModuleDependencies::class.java
)

Use this if your module scope is Activity

@EntryPoint
@InstallIn(ActivityComponent::class)
interface ChatModuleDependencies {

    fun timeHelper(): TimeHelper

}

EntryPointAccessors.fromActivity(
    this,
    ChatModuleDependencies::class.java
)

And etc...

Norry