WorkManager set up with KOIN

Question

I'm trying to set up work manager to do some work and I'm having trouble initializing it. Im using KOIN workmaanger dsl

implementation "org.koin:koin-androidx-workmanager:2.2.0-rc-4"

and my worker class looks like this

class NotificationsScheduler(
    private val dispatchers: AppCoroutineDispatchers,
    private val getTaskUseCase: GetTaskUseCase,
    private val context: Context,
    private val workerParameters: WorkerParameters
) : Worker(context, workerParameters) {

    override fun doWork(): Result {
    ...
    }

What I've done so far is disabled default initializer

<provider
    android:name="androidx.work.impl.WorkManagerInitializer"
    android:authorities="${applicationId}.workmanager-init"
    tools:node="remove" />

My worker module is set up like this

val workerModule = module {
    worker { NotificationsScheduler(get(), get(), get(), get()) }
}

and it is added in list used in startKoin DSL. I've also used workManagerFactory() DSL to set up factory.

startKoin {
        androidContext(this@MyApplication)
        workManagerFactory()
        modules(koinModules)
    }

What I'm having trouble with, is that it crashes when app start with exception:

 Caused by: org.koin.core.error.NoBeanDefFoundException: No definition found for class:'androidx.work.WorkerParameters'. Check your definitions!

Answer 1

Just take NotificationsScheduler class implements KoinComponent and inject the AppCoroutineDispatchers and GetTaskUseCase instances by inject() like this:

class NotificationsScheduler(context: Context, parameters: WorkerParameters) : CoroutineWorker(context, parameters), KoinComponent {
    private val dispatchers: AppCoroutineDispatchers by inject()
    private val getTaskUseCase: GetTaskUseCase by inject()
}

In worker module:

val workerModule = module {
    worker { OneTimeWorkRequestBuilder<AlarmNotificationHandleWorker>().run{
         WorkManager.getInstance(androidContext())
         .enqueueUniqueWork(UUID.randomUUID().toString()
         ,ExistingWorkPolicy.APPEND, this)
        } 
    }
}

Make sure you had provided the GetTaskUseCase and AppCoroutineDispatchers instances Updated: Koin 2.2.0 release:

implementation "org.koin:koin-androidx-workmanager:2.2.0"

Update your Worker class

 class NotificationsScheduler(private val dispatchers: AppCoroutineDispatchers,private val getTaskUseCase: GetTaskUseCase,context: Context, parameters: WorkerParameters) : CoroutineWorker(context, parameters), KoinComponent {
       
  }

And here you are:

val workerModule = module {
        worker { NotificationsScheduler(get(),get(),androidContext(),get())  }
    }

Thanks @p72b