10001 Cannot open store after exiting app by going back

[greenrobot-team]

When exiting a Flutter app using the back navigation button, then re-launching it the following exception appears:

10001 Cannot open store: another store is still open using the same path

Basic info (please complete the following information):

• ObjectBox version: 1.5.0
• Flutter/Dart SDK: 3.0.3
• Reproducibility: always
• OS: Android

Moved out of similar, but unrelated (Flutter hot restart) #387

[greenrobot-team]

@BLB-EN438 @animedev1 I can't reproduce this with our example (e.g. launch, press back, then launch the app from the launcher shortcut again).

Is ObjectBox in your project maybe set up differently from the example?

[github-actions]

Without additional information, we are unfortunately not sure how to resolve this issue. Therefore this issue has been automatically closed. Feel free to comment with additional details and we can re-open this issue.

[techouse]

I have had the same error when opening a deep link on Android.

Looks like it's related to flutter/flutter#91649

The fix is to change the Android launch mode from singleTop to singleInstance

<activity
  android:launchMode="singleInstance"
  // ...
>

and to ensure that only ever one instance of an ObjectBox Store is open at the same time using Store.isOpen(pathToYourStore).

[greenrobot-team]

@techouse Thanks for the details! So this is another workaround instead of using an is open check and doing attach vs. open, see #436.

Then #436 is not an edge case after all and a Store being opened multiple times can actually happen more frequently than I thought. We maybe should add guidance in the docs about this then or maybe adapt our API if possible.