IssueTracker

Project: platform/frameworks/support
Branch: androidx-main

commit 66494e2d6810347e6a3b41ec3f2665e598f108f0
Author: Ian Lake <ilake@google.com>
Date:   Thu Apr 14 00:14:24 2022

    Ensure that SavedStateHandle restores upon initial creation
   
    runOnNextRecreation() only runs on the next time
    the lifecycle reaches CREATED, not the first time.
   
    By using a LifecycleObserver directly, we ensure that
    each Lifecycle move causes a performRestore() to
    consistently happen.
   
    Test: existing tests pass, sample app works
    BUG: 228865698
    Relnote: "Fixed an issue where nesting one `NavHost` within
    another `NavHost` in a non-primary bottom navigation tab
    would lead to an `IllegalStateException` when using
    multiple back stacks."
   
    Change-Id: I11bd5173f035ae1da7922b4142fcedc0f3b54ff6

M       lifecycle/lifecycle-viewmodel-savedstate/src/main/java/androidx/lifecycle/SavedStateHandleSupport.kt

https://android-review.googlesource.com/2064518

Thanks for quick fix! Works well with latest snapshot.

2.4.1 also has same issue

using jetpack compose /  bottom navigation with NavHost

Fatal Exception: java.lang.IllegalStateException: You cannot access the NavBackStackEntry's ViewModels after the NavBackStackEntry is destroyed.
       at androidx.navigation.NavBackStackEntry.getViewModelStore(NavBackStackEntry.kt:192)
       at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:106)
       at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:69)

Hi, I recently came across this crash in my current project and I discovered that it happens when a Textfield was tapped and in focus, then the app was backgrounded. This would occur with all of the Textfields in the app.

We are using Compose version: 1.2.0-rc03
and jetpack lifecycle version: 2.4.1

Fatal Exception: java.lang.IllegalStateException: You cannot access the NavBackStackEntry's ViewModels after the NavBackStackEntry is destroyed.
       at androidx.navigation.NavBackStackEntry.getViewModelStore(NavBackStackEntry.kt:192)
       at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:106)
       at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:69)

Okay, we will get a sample project up soon. One thing I forgot to mention in the initial comment is that this crash occurs when we use backQueue.clear() to clear the back stack. We were able to come up with a solution/workaround by using popUpTo() as a way to clear the back stack, and after implementing that solution we saw no crashes when backgrounding the app while a textfield was in focus.