Re: ViewModel for iOS: I am still confused what is supported and what is not. I see the 1.6.10-beta0...

# compose-ios

[tylerwilson]

Re: ViewModel for iOS: I am still confused what is supported and what is not. I see the 1.6.10-beta01 release refer to using ViewModel with the following comment:

For using ViewModels outside of NavHost you need to provide custom store owner via LocalViewModelStoreOwner

I want to use the ViewModel as a base for my own ViewModels to have access to viewModel(Coroutine)Scope. Is this possible with the current alpha04 version, and if so, any examples out there? Thank you!

[Ivan Matkov]

https://github.com/MatkovIvan/nav_cupcake

[Ivan Matkov]

The comment is about LocalViewModelStoreOwner that defines lifetime of your ViewModel s. Currently there is no default one outside of navigation

[Ivan Matkov]

Example of defining your own: https://github.com/MatkovIvan/nav_cupcake/blob/1dc15b6ef68f68ba358a32501802142967f[…]/src/commonMain/kotlin/com/matkovivan/nav_cupcake/ViewModels.kt

[Ivan Matkov]

It's temporary - Compose Multiplatform will implement LocalViewModelStoreOwner

[tylerwilson]

Well, I cannot even get that far: when I add

implementation(libs.androidx.lifecycle.viewmodel)

to my commonMain, my iOS build fails with:

Showing Recent Messages
No matching variant of org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3 was found. The consumer was configured to find a library for use during 'kotlin-api', preferably optimized for non-jvm, as well as attribute 'org.jetbrains.kotlin.native.target' with value 'ios_simulator_arm64', attribute 'org.jetbrains.kotlin.platform.type' with value 'native' but:

[Ivan Matkov]

libs.androidx.lifecycle.viewmodel

It's a reference to toml.

What package and version are you trying to use?

[tylerwilson]

sorry, this:

androidx-lifecycle-viewmodel = { module = "androidx.lifecycle:lifecycle-viewmodel-ktx", version.ref = "lifecycle" }

where

lifecycle = "2.8.0-alpha04"

[tylerwilson]

maybe i dont want the ktx version anymore, since i think it is pure kotlin anyway

[Ivan Matkov]

https://developer.android.com/jetpack/androidx/releases/lifecycle#2.8.0-alpha02

• The lifecycle-viewmodel-ktx kotlin extensions have now been moved to the base lifecycle module. (Id787b, b/274800183)

• The lifecycle-runtime-ktx kotlin extensions have now been moved to the base lifecycle module. (Ic3686, b/274800183)

• The lifecycle-livedata-core-ktx kotlin extensions have now been moved to the base lifecycle module. (I54a3d, b/274800183)

[Ivan Matkov]

1. *-ktx are not multiplatform
2. It's a Google's package: it will work on iOS, but if you need web too use JB's one: org.jetbrains.androidx.lifecycle:lifecycle-* . It will redirect to Google's one on supported platforms.

[Ivan Matkov]

Please note that our versioning a bit different: as mentioned in changelog:

- Lifecycle libraries androidx.lifecycle:lifecycle-*:2.8.0-alpha01. Based on:

- [Lifecycle 2.8.0-alpha04](https://developer.android.com/jetpack/androidx/releases/lifecycle#2.8.0-alpha04)

it's only 2.8.0-alpha01

[tylerwilson]

Ugh, I did not even notice that org.jetbrains. Sooo many packages....

[tylerwilson]

If my hair was not already gray, it would be worse..

[tylerwilson]

Okay, all better now. Thank you so much!