Hello team :wave: We seem to be getting a crash w...

# ios

[Michal Srutek]

Hello team 👋

We seem to be getting a crash with

Fatal Exception: kotlin.IllegalStateException
Cannot attach layer if the view is not in the window hierarchy

which seems to be popping up in ComposeHostingViewController when presenting a Dialog. We haven't been able to reproduce this yet.

Any ideas of what might be causing this, or how to mitigate the issue?

Stack trace in the thread 🧵 >>>

Thanks!

[Michal Srutek]

Fatal Exception: kotlin.IllegalStateException

0  OURAPP                         0xfffd70 kfun:androidx.compose.ui.scene.ComposeHostingViewController.object-1.createPlatformLayer#internal + 132 (Preconditions.kt:132)
1  OURAPP                         0xf9cea4 kfun:androidx.compose.ui.scene.PlatformLayersComposeSceneImpl.createLayer#internal + 190 (PlatformLayersComposeScene.skiko.kt:190)
2  OURAPP                         0xf96e04 kfun:androidx.compose.ui.scene#rememberComposeSceneLayer(kotlin.Boolean;androidx.compose.runtime.Composer?;kotlin.Int;kotlin.Int){}androidx.compose.ui.scene.ComposeSceneLayer + 263 (ComposeScene.skiko.kt:263)
3  OURAPP                         0xfab49c kfun:androidx.compose.ui.window.DialogLayout#internal + 196 (Dialog.skiko.kt:196)
4  OURAPP                         0xfa9d80 kfun:androidx.compose.ui.window#Dialog(kotlin.Function0<kotlin.Unit>;androidx.compose.ui.window.DialogProperties?;kotlin.Function2<androidx.compose.runtime.Composer,kotlin.Int,kotlin.Unit>;androidx.compose.runtime.Composer?;kotlin.Int;kotlin.Int){} + 176 (Dialog.skiko.kt:176)
5  OURAPP                         0x1b871a4 kfun:com.ourapp.shared.core.ui.views#OurAppAlertDialog(kotlin.Function0<kotlin.Unit>;com.ourapp.shared.core.ui.views.OurAppDialogButtonConfig?;com.ourapp.shared.core.utils.IconSource?;kotlin.String?;kotlin.String?;androidx.compose.ui.graphics.Color?;androidx.compose.ui.text.TextStyle?;kotlin.String?;com.ourapp.shared.core.ui.views.OurAppDialogButtonConfig?;kotlin.Boolean;androidx.compose.ui.window.DialogProperties?;androidx.compose.runtime.Composer?;kotlin.Int;kotlin.Int;kotlin.Int){} + 61 (OurAppAlertDialog.kt:61)

[Michal Srutek]

And OurAppAlertDialog.kt:61 is just a call which creates a Dialog

Dialog(
  onDismissRequest = onDismissRequest,
  properties = properties,
) {
  ...
}

[Andrei Salavei]

Hi!
Could you please file an issue in out YouTrack?

[Andrei Salavei]

You probably can fix the issue at the place where you're adding ComposeUIViewController to your app. Could you please show this code?

[Michal Srutek]

Sure! Created CMP-7536

[Andrei Salavei]

Many thanks!

[Andrei Salavei]

As a workaround, you can add small delay before showing the Dialog.

[Michal Srutek]

Thanks for the info!