Or please let me know if there is a better way of ...

# multiplatform

[Loe]

Or please let me know if there is a better way of collecting Kotlin Flow from Swift

[Stefan Oltmann]

I do it like here: https://github.com/Kotlin/kmm-production-sample/blob/c357fe62aec1e55c7a48fb53974178489eb02998/iosApp/iosApp/RSSApp.swift#L30

[Stefan Oltmann]

I know, I know… I refer a lot to the kmm-production-sample on which my apps architecture is based on… but this sample app has a really good architecture and solved a lot of things really nice and pretty (in my opinion).

[Stefan Oltmann]

You also need to copy this small class to make it work: https://github.com/Kotlin/kmm-production-sample/blob/c357fe62aec1e55c7a48fb53974178489eb02998/shared/src/iosMain/kotlin/com/github/jetbrains/rssreader/core/CFlow.kt#L14

[Stefan Oltmann]

It bridges Coroutine Flow and SwiftUI State pretty good and is even fully compatible with the old Kotlin/Native memory model.

[Loe]

Thank you! I will check it out

[AmrJyniat]

I like this way too, but how you clear the Store object from the memory after destroying the associated activity/view with it?
I tested this sample on one screen simple app and it works fine but I wonder if this solution scalable enough to service your needs like ViewModel in android?

[Stefan Oltmann]

In my case never. The whole app has a single Store and AppState that represents everything - the whole app state. It’s not like a store / state per view like Android viewmodels.

[Stefan Oltmann]

Also my app is Compose Multiplatform. So there is technically just one view that calls the main composable. And this composable decides on the AppState object what to show.

[Stefan Oltmann]

For the Android version of my app I indeed (ab)use a Android ViewModel, but only to save the current instance of my AppStore object so it survives configuration changes.