Unable to initialize NavBackStackEntry - IllegalStateException: Method addObserver must be called on the main thread [171125856]

Fixed

Bug

Status Update

No update yet.

Description

[Deleted User]

created issue #1

Oct 19, 2020 08:57AM

Component used: Navigation

Version used: 2.2.0, 2.3.0, 2.3.1

Devices/Android versions reproduced on: 10.0, 9.0 - probably not related

Description:

I've updated two dependencies in my project:

androidx.fragment:fragment 1.3.0-alpha06 -> 1.3.0-beta01
androidx.activity.activity 1.1.0 -> 1.2.0-beta01

and now I see that NavController::navigate needs to be called from the main thread. Otherwise NavBackStackEntry throws IllegalStateException when trying to register lifecycle observer.

Stacktrace:

Caused by: java.lang.IllegalStateException: Method addObserver must be called on the main thread
    at androidx.lifecycle.LifecycleRegistry.enforceMainThreadIfNeeded(LifecycleRegistry.java:317)
    at androidx.lifecycle.LifecycleRegistry.addObserver(LifecycleRegistry.java:172)
    at androidx.savedstate.SavedStateRegistryController.performRestore(SavedStateRegistryController.java:61)
    at androidx.navigation.NavBackStackEntry.<init>(NavBackStackEntry.java:84)
    at androidx.navigation.NavBackStackEntry.<init>(NavBackStackEntry.java:69)
    at androidx.navigation.NavController.navigate(NavController.java:970)
    at androidx.navigation.NavController.navigate(NavController.java:867)

There were no changes in documentation so I assume that this behavior is unintended.

Comments

il...@google.com <il...@google.com> #2Oct 19, 2020 08:10PM

Information redacted by Android Beta Feedback.

[Deleted User] <[Deleted User]> #3Oct 20, 2020 07:19AM

Thanks for reporting this issue. We have passed this to the development team and will update this issue with more information as it becomes available.

ap...@google.com <ap...@google.com> #4Apr 6, 2021 10:13PM

What

More information

Deep sleep stops working. Restart helps

Where

Build and device data

- Build Number: google/husky_beta/husky:16/BP22.250221.013/13218340:user/release-keys
(Note: It is the build when sending this report. For exact build reference, please see the attached bugreport.)
- SoC Revision: Zuma B1

Debugging information
Usługi Google Play
com.google.android.gms
Version 250934035 (25.09.34 (260400-738842635))
System App (Updated)

Android System WebView
com.google.android.webview
Version 699804033 (134.0.6998.40)
System App (Updated)

Network operator: Orange
SIM operator: Orange

Filed by Android Beta Feedback. Version (Updated): 2.46-betterbug.external_20241023_RC01 (DOGFOOD)
To learn more about our feedback process, please visit https://developer.android.com/preview/feedback#feedback-app.

il...@google.com <il...@google.com> #5Apr 6, 2021 10:17PM

Marked as fixed, reassigned to il...@google.com.

Information redacted by Android Beta Feedback.

ap...@google.com <ap...@google.com> #6Apr 12, 2021 11:58PM

What

More information

My Pixel 8 battery lasts less than with version 15

Where

Build and device data

- Build Number: google/shiba_beta/shiba:16/BP22.250221.013/13218340:user/release-keys
(Note: It is the build when sending this report. For exact build reference, please see the attached bugreport.)
- SoC Revision: Zuma B1

Debugging information
Servicios de Google Play
com.google.android.gms
Version 250934035 (25.09.34 (260400-738842635))
System App (Updated)

Android System WebView
com.google.android.webview
Version 699804033 (134.0.6998.40)
System App (Updated)

Network operator: Not available
SIM operator: AT&T

Issue 171125856

Description

Description:

Issue summary

Comments

il...@google.com <il...@google.com> #2Oct 19, 2020 08:10PM

[Deleted User] <[Deleted User]> #3Oct 20, 2020 07:19AM

ap...@google.com <ap...@google.com> #4Apr 6, 2021 10:13PM

What

More information

Where

Build and device data

il...@google.com <il...@google.com> #5Apr 6, 2021 10:17PM

ap...@google.com <ap...@google.com> #6Apr 12, 2021 11:58PM

What

More information

Where

Build and device data

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