We're trying to integrate SKIE into our project. W...

# multiplatform

[Lukasz Kalnik]

We're trying to integrate SKIE into our project. We have the plugin in our build.gradle.kts and enableSwiftUIObservingPreview = true, but iosApp cannot find Observing.

[Lukasz Kalnik]

We use SKIE 0.8.2 and Kotlin 2.0.0

[John O'Reilly]

There's example of it in following fwiw https://github.com/joreilly/FantasyPremierLeague

[John O'Reilly]

adding in following PR https://github.com/joreilly/FantasyPremierLeague/pull/236

[Lukasz Kalnik]

Yes, I'm following it, but it doesn't build.

[Lukasz Kalnik]

The Observing seems not to be found

[Lukasz Kalnik]

In Swift code

[John O'Reilly]

FantasyPremierLeague project doesn't build for you?

[Lukasz Kalnik]

It builds, but my project doesn't

[Lukasz Kalnik]

I use XCode 15.4

[Lukasz Kalnik]

(I develop in Fleet, but use XCode as well)

[Filip Dolník]

Hi! Do other SKIE features work as expected?

[Lukasz Kalnik]

Hi, I didn't try the other features

[Lukasz Kalnik]

right now in the Observing line I get Value of type 'KotlinBase' has no member 'here my member property name'

[Lukasz Kalnik]

image.png

[Filip Dolník]

what is the declaration of “viewModel.uiState”?

[Lukasz Kalnik]

StateFlow<UiState>

[Lukasz Kalnik]

UiState is a data class

[Lukasz Kalnik]

data class UiState(
        val signInState: SignInState = SignInState.Loading,
    ) {

        enum class SignInState {
            Loading,
            SignedIn,
            Error,
        }
    }

[Filip Dolník]

try adding let foo: SkieSwiftStateFlow<UiState> = viewModel.uiState above the Observing call
just so that we know if the derived type is correct

[Lukasz Kalnik]

image.png

[Lukasz Kalnik]

I have import ComposeApp

[Filip Dolník]

is the UiState data class nested?

[Lukasz Kalnik]

ComposeApp is where my framework is generated

[Lukasz Kalnik]

Yes

[Filip Dolník]

oh, use its full name in that case

[Lukasz Kalnik]

Oh, ok

[Lukasz Kalnik]

So this line compiles now

[Lukasz Kalnik]

image.png

[Filip Dolník]

hm, that’s weird 😄

try adding
let typedUiState: SplashScreenViewModel.UiState = uiState
before the switch

[Filip Dolník]

and replace the uiState inside the switch with this typedUiState

[Lukasz Kalnik]

image.png

[Lukasz Kalnik]

Somehow the type is not being passed correctly

[Filip Dolník]

yeah, can you try the force cast and run the code to see if it has the correct type in runtime?

[Lukasz Kalnik]

I have setup the project first as a Compose Multiplatform project

[Lukasz Kalnik]

Only afterwards I added SwiftUI

[Lukasz Kalnik]

I don't know if this is the problem. When I created a new project with the "SwiftUI" template, SKIE works

[Filip Dolník]

or, maybe first try clicking on the Observing function and send me how it’s declared

[Filip Dolník]

it’s possible that there is some name conflict and that it’s calling a wrong function

[Lukasz Kalnik]

Clicking on Observing in XCode shows a question mark

[Lukasz Kalnik]

In Fleet it's not resolved

[Filip Dolník]

of course 😄

[Filip Dolník]

but I assume the code compiles if you add the force cast?

[Lukasz Kalnik]

Yes

[Lukasz Kalnik]

It shows "Loading" 🙂

[Lukasz Kalnik]

But the state now doesn't change on the screen

[Lukasz Kalnik]

Let me compare with Android

[Lukasz Kalnik]

On Android the state updates on the screen

[Lukasz Kalnik]

So SwiftUI just takes the first value and doesn't get updates from viewModel

[Filip Dolník]

is the project open source or can you share it in any way?

[Filip Dolník]

@Lukasz Kalnik

I tried reverting the changes in the project and the project compiles just fine. I think it might be some issue with the incremental compilation, try a full clean build.

The Loading screen is stuck in the loading state, but I don’t think that’s a SKIE issue because the custom function onStart is never executed.

[Lukasz Kalnik]

Ah ok, yes, that might be a problem with our code. Thanks for looking into it!