@AssistedInject in ViewModel using Dagger (NOT Hilt, just dagger) does not compile: cannot be provided without an @Inject constructor or an @Provides-annotated method about dagger HOT 6 CLOSED

hi @kuanyingchou ,

thanks for your quick response, i tried it in the dummy project and then in the real project, i moved versions and now is working,

implementation 'com.google.dagger:dagger-android:2.51'
//implementation 'com.google.dagger:dagger-android-support:2.17'
//annotationProcessor 'com.google.dagger:dagger-android-processor:2.17'
annotationProcessor 'com.google.dagger:dagger-compiler:2.48'
//kapt 'com.google.dagger:dagger-android-processor:2.17'
kapt 'com.google.dagger:dagger-compiler:2.48'

i am closing the ticket, thanks for your prompt support!

from dagger.

Hi, @alveru , the missing binding error says that Dagger doesn't know how to provide DetailsViewModel. This is because now that DetailsViewModel is assisted injected, it is not included in the graph anymore. You can try removing your bindDetailsViewModel() or ViewModelModule.

from dagger.

Hello ,

thanks for your prompt response, what you mentioned solved that problem, though now the Factory is the one sending the error, since it cannot be injected :(

error: [Dagger/MissingBinding] DetailsViewModel.Factory cannot be provided without an @Provides-annotated method.
void inject(DetailsActivity activity);

i tried putting @AssistedInject too in the variable but didn't work:

class DetailsActivity : AppCompatActivity() {
@AssistedInject
lateinit var viewModelFactory: DetailsViewModel.Factory

• I also tried adding @singleton to the factory but that failed too

  companion object {
  @Suppress("UNCHECKED_CAST")
  @singleton
  fun factory(
  factory: Factory,
  id: String
  ) : ViewModelProvider.Factory {
  return object : ViewModelProvider.Factory {
  override fun create(modelClass: Class): T =
  factory.create(id) as T
  }
  }
  }

Do you know where should i place the provider so Dagger can inject it?

Thanks in advance

from dagger.

Hi, @alveru , you shouldn't need a provider for DetailsViewModel.Factory. Could you share a minimal project to reproduce this?

from dagger.

Hi @kuanyingchou

thanks for your reponse, yes, i am attaching a dummy project with the similar configuration to that of my project, with java & kotlin files, it shows the same @provides error when trying to inject the viewmodel assisted factory, the project is in a zip file:

AssistedTest.zip

from dagger.

Hi, @alveru , I think it's because you're mixing Dagger 2.35.1 and 2.17 in you build.gradle.kts:

    implementation("com.google.dagger:dagger-android:2.35.1")
    //implementation("com.google.dagger:dagger-android-support:2.17")
    annotationProcessor("com.google.dagger:dagger-android-processor:2.17")
    annotationProcessor("com.google.dagger:dagger-compiler:2.17")
    //debugImplementation("androidx.compose.ui:ui-test-manifest:1.8.2")
    kapt("com.google.dagger:dagger-android-processor:2.17")
    kapt("com.google.dagger:dagger-compiler:2.17")

You'll have to allign all Dagger artifacts to the same version and it has to be higher than 2.31, where assisted injection was introduced.

from dagger.