IllegalArgumentException:SavedStateProvider with the given key is already registered

Question

My app is crashing on some user's devices with the exception below.

Fatal Exception: java.lang.IllegalArgumentException: SavedStateProvider with the given key is already registered
       at androidx.savedstate.SavedStateRegistry.registerSavedStateProvider(SavedStateRegistry.java:2)
       at androidx.lifecycle.SavedStateHandleController.attachToLifecycle(SavedStateHandleController.java:2)
       at androidx.lifecycle.SavedStateHandleController.create(SavedStateHandleController.java:1)
       at androidx.lifecycle.AbstractSavedStateViewModelFactory.create(AbstractSavedStateViewModelFactory.java:1)
       at androidx.lifecycle.ViewModelProvider.get(ViewModelProvider.java:5)
       at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.java:5)
       at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.java:5)
       at com.emptysheet.pdfreader_autoscroll.homeScreen.MainActivity.getViewModel(MainActivity.java:3)
       at com.emptysheet.pdfreader_autoscroll.homeScreen.MainActivity$scanDeviceForFiles$1$1.invokeSuspend(MainActivity.java:3)
       at kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull(Intrinsics.java)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.java:4)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.java)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.java:7)

Everything is working fine on my devices. I don't get this exception on my own testing devices as well as on emulators. Also, I am using Hilt in my app.

Here is my ViewModel class.

class MainActivityViewModel @ViewModelInject constructor(
    private val pdfItemRepository: PdfItemRepository
) : ViewModel() {
  
}

Here is the activity where I use this ViewModel.

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {

      private val viewModel:MainActivityViewModel by viewModels()


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        binding = ActivityMainBinding.inflate(layoutInflater)
        val view = binding.root
        setContentView(view)

    }

I am not using this MainActivityViewModel anywhere else except MainActivity. So there is no sharing of ViewModel. Also, the rotation is off on MainActivity. So there is no rotation change.

I came to understand from the error below that somehow my activity is trying to create another ViewModel instead of retaining the previous one?. Please correct me if I am wrong. I am unable to understand what kind of scenarios is triggering SavedStateRegistry.registerSavedStateProvider() again.

Note - I have omitted methods in my ViewModel class and activity to increase readability.

What version of Lifecycle are you using? Do you see the same on the latest stable version? — ianhanniballake, Jul 10 '20 at 20:15
Yes, I am using the current stable version of lifecycle 2.2.0. But still, I am facing this issue, — Rajesh kumar, Jul 11 '20 at 03:22
@Rajeshkumar Could u tell us how do u resolve it ? I have the same problem ? :/ — Imene Noomene, Aug 04 '21 at 08:54

HamzehXX · Answer 1 · 2020-07-23T05:19:20.523

I faced the same exception and managed to fix that by going to app/build.gradle file and:

changing the configuration name from 'annotationProcessor' to 'kapt' for these artifacts:

'com.google.dagger:dagger-compiler:2.28.3',

'androidx.hilt:hilt-compiler:1.0.0-alpha01'

and sync the project.

You can find a useful explanation on the scenario behind the seen in the link below: https://zsmb.co/a-deep-dive-into-extensible-state-saving/

score -1 · Answer 2 · answered Aug 05 '20 at 06:53

-1

You must to add this dependencies to your

implementation 'androidx.hilt:hilt-lifecycle-viewmodel:1.0.0-alpha02'

// When using Kotlin

kapt 'androidx.hilt:hilt-compiler:1.0.0-alpha02'

answered Aug 05 '20 at 06:53

Saeid Lotfi

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IllegalArgumentException:SavedStateProvider with the given key is already registered

2 Answers2