Hello all, I started some basic implementations on...

# multiplatform

[Kapil Godhwani]

Hello all, I started some basic implementations on Kotlin multiplatform and started following some amazing blogs written by everyone here. I am trying to implement a basic Service Locator that relies on a lateinit var. I dont see a way to initialize this var in my iOS Code and I also dont see the var in the native compiled code. Code -

@ThreadLocal
object ServiceLocator {

    lateinit var applicationContext: ApplicationContext

    val CareApi by lazy { CareZoneApi(PlatformServiceLocator.httpClientEngine) }

    val performLogin: PerformLogin
        get() = PerformLogin(CareApi)

    val loginPresenter: LoginPresenter
        get() = LoginPresenter(performLogin, getUserSettings(applicationContext))

}

How do I access the applicationContext in my iOS app code to assign it a value. The ApplicationContext is my custom class.
PS: Please let me know if this is also not the right place to ask this query.

[alex009]

on iOS side you can't access to ServiceLocator instance, on iOS it will be ServiceLocator().applicationContext = •••...to avoid it you can create global function like:

fun setupServiceLocator(context: ApplicationContext) {
    ServiceLocator.applicationContext = context
}

and on iOS side it will be:

ServiceLocatorKt.setupServiceLocator(context: •••)

if file named ServiceLocator.kt (name of class with global functions generated from filename)

[russhwolf]

Calling ServiceLocator() gives you the ServiceLocator instance. It looks like an initializer/method call but it’s always returning the same object.

[ribesg]

Yes, ServiceLocator().x on iOS in this case is identical to ServiceLocator.x on JVM/Android. I guess it’s this way because of some kind of limitations in the language translation.

[Kapil Godhwani]

Yes even I thought so, but I am not able to access it in iOs code though. Now when I looked at it further, it is there in the shared.h header file in my imported framework, but it doesnt show up when I do import shared in my Viewcontroller. Which probably means some old shared framework is getting imported. Dont know from where though.

[Sam]

Xcode can get confused sometimes. If everything seems like it should work but isn’t, first try clean. If that doesn’t help delete the derived data folder.

[Tobi]

Why did you mark the ServiceLocator as ThreadLocal?
I’ve seen this already a couple of time in other examples, but couldn’t figure out the reason 🤔