has anyone had success setting up the workmanager capabiliti kotlinlang #koin

has anyone had success setting up the workmanager capabilities in Koin? the docs are kinda confusing me and I don't really understand what they're saying

curioustechizen

10/12/2023, 3:58 AM

I'm using koin with WM and it works. I'm not at my laptop right now but I'll post a snippet later. I think there's a sample in the Koin repo that I took inspiration from.

ascii

10/12/2023, 4:05 AM

I've always just done

single { WorkManager.getInstance(androidContext()) }

. You can

inject

the instance and you still retain default androidx startup capabilities. Indeed, docs for

koin-androidx-workmanager

are confusing and don't reveal to me what I'd gain if I use it.

curioustechizen

10/12/2023, 6:42 AM

The way I understand it (and maybe I'm wrong) is that Koin (or Hilt) offer specific injection features for those components that the user has no control over construction - i.e, that the system constructs for you. Examples of this are ViewModel and WorkManager Workers. Both these components have some sort of Factory API that you should be using if you want to pass dependencies while constructing them. Koin (and Hilt) offer specific support for these components that helps you hide the Factory boilerplate from you.

WorkManager.getInstance()

is just to get an instance of WorkManager. Koin's WM integration allows you to declare and inject

Worker

instances, not just the

WorkManager

instance. It allows you to do this:

Copy code

worker {
    FirmwareUpdateWorker(
        bleRepository = get(),
        appContext = get(),
        firmwareUpdateConfig = get(),
        params = it.get()
    )
}

Here.

FirmwareUpdateWorker

sub-classes

CoroutineWorker

and it has constructor parameters that Koin helps you inject.

Elsewhere when you use say

val firmwareUpdateWorkRequest = OneTimeWorkRequestBuilder<FirmwareUpdateWorker> ()

Koin's

workerManagerFactory

and the above

worker

DSL work together to obtain the correct instance of the Worker.

At least that's my understanding. Please correct me if I'm wrong!

ascii

10/12/2023, 7:38 AM

I see, that would help reduce boilerplate a bit, yeah. Right now I've gotten used to

getKoin().inject

inside the worker.

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