Koin injecting into WorkManager

Question

I have a basic work manager

class BackgroundSyncWorker (
    appContext: Context,
    workerParams: WorkerParameters
): Worker(appContext, workerParams) {

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

And I want to inject my repository into this to do some work in my database. I've set Koin up correctly but can't seem to find a way of how to inject my dependency into the Worker. I've tried inheriting the KoinComponent and trying to do it using that, but by inject() doesn't exist, but there's two by inject methods that I can't find how to use. There doesn't seem to be any information on how to inject into managers, although there's a few for using dagger.

score 11 · Accepted Answer · answered Aug 04 '19 at 18:30

11

This does actually work, I was just using var instead of val.

class BackgroundSyncWorker (
    appContext: Context,
    workerParams: WorkerParameters
): Worker(appContext, workerParams), KoinComponent {

    val dataSyncRepository : DataSyncRepositoryImpl by inject()

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

answered Aug 04 '19 at 18:30

Daniel Sims

531
4
21

can y post main Module config – Ashish Chaugule Sep 13 '20 at 06:53
The module is the same as a normal module for Koin – Daniel Sims Sep 13 '20 at 16:36

score 9 · Answer 2 · answered Aug 04 '19 at 18:53

9

I have noticed a couple of things from your code:

The first reason for why this does not work because you need to extend/inherit the BackgroundSyncWork from KoinComponent, so making this BackgroundSyncWork koin-aware.

class BackgroundSyncWorker (
    appContext: Context,
    workerParams: WorkerParameters
): Worker(appContext, workerParams), KoinComponent {

val database: Database by inject()

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

Second: Also, please make sure that database object creation is properly configured in koin module. It should work with no problem.

answered Aug 04 '19 at 18:53

Farruh Habibullaev

2,342
1
26
33

Yeah, I got it below :), was a stupid mistake. Thanks though! – Daniel Sims Aug 04 '19 at 19:54
Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: – Ashish Chaugule Sep 13 '20 at 06:43

Koin injecting into WorkManager

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