Summary: Unable to inject Koin Workmanager I am g...

# koin

[Malik Hasan]

Summary: Unable to inject Koin Workmanager

I am getting
org.koin.core.error.NoBeanDefFoundException: No definition found for type 'androidx.work.WorkManager'. Check your Modules configuration and add missing type and/or qualifier!

When I try to inject WorkManager from Koin.

I have in onCreate of Application

startKoin {
   androidContext(context)
   workManagerFactory() 
   modules(...

And Android Manifest

<provider
    android:name="androidx.startup.InitializationProvider"
    android:authorities="${applicationId}.androidx-startup"
    android:exported="false"
    tools:node="merge">
    <meta-data
        android:name="androidx.work.WorkManagerInitializer"
        android:value="androidx.startup"
        tools:node="remove" />
</provider>

And then injecting into my classes.

Is there anything else I need to do to get WorkManager from Koin besides this?

[arnaud.giuliani]

did you check documentation? https://insert-koin.io/docs/reference/koin-android/workmanager#setup-workmanager

[Malik Hasan]

yes...

[arnaud.giuliani]

can you swap workManagerFactory() and modules() section?

[Malik Hasan]

it didn't work. I ended up adding this to koin:

single { WorkManager.getInstance(get()) }

I thought workManagerFactory() should provide it automatically (like androidContext()) but I guess not

[arnaud.giuliani]

yes it should

[arnaud.giuliani]

what version do you use?

[Malik Hasan]

"io.insert-koin:koin-androidx-workmanager:3.5.6"

[arnaud.giuliani]

ok 😕

[arnaud.giuliani]

in this sample app, there is setup: https://github.com/InsertKoinIO/nowinandroid/blob/refacto_koin/end/app/src/main/java/com/google/samples/apps/nowinandroid/NiaApplication.kt#L41

[arnaud.giuliani]

do you use worker DSL with that?
https://github.com/InsertKoinIO/nowinandroid/blob/refacto_koin/end/sync/work/src/m[…]/com/google/samples/apps/nowinandroid/sync/di/SyncKoinModule.kt

[Malik Hasan]

yes I'm using the same workerOf syntax

[arnaud.giuliani]

arf 😕

[arnaud.giuliani]

is you worker not starting at all?

[Malik Hasan]

It doesn't even get to starting the worker, it fails on injecting the WorkManager into the class that needs to start the worker

//koin
viewModelOf(::MyViewModel)
workerOf(::MyWorker)

// myViewModel
class MyViewModel(val workManager: WorkManager) {
  fun doSomething() {
    val work = OneTimeWorkRequestBuilder<MyWorker>().build()
    workManager.enqueue(work)
  }
}

[Malik Hasan]

so it fails to create the viewmodel at all, because it can't find the workmanager

[Malik Hasan]

Oh actually I see that that sample project also had to retrieve workManager manually. Line 45 in SyncInitializer.kt , so I guess I am on the right track

[Malik Hasan]

docs could be a little clearer on that

[arnaud.giuliani]

good point 👍

[Malik Hasan]

I appreciate you looking into it!