fluttercommunity / flutter_workmanager

A Flutter plugin which allows you to execute code in the background on Android and iOS.

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PlatformException(channel-error, Unable to establish connection on channel., null, null) when starting Firebase.initializeApp from iOS background task

markalroberts opened this issue · comments

  • I have read the README
  • I have done the setup for Android
  • I have done the setup for iOS
  • I have ran the sample app and it does not work there

Version

Technology Version
Workmanager version 0.52
Xcode version 14.1
Swift version 5.7.1
iOS deployment target 16.x

Describe the error

I am trying to use WorkManager for a regular 15 minute background tasks to update the BadgeIcon number and show some local notifications. This works fine on Android. On iOS, when I simulate background refresh, I get this error at the point that Firebase.initializeApp is called at the start of Workmanager().executeTask- however it works fine when it's called in main.dart.

PlatformException(channel-error, Unable to establish connection on channel., null, null)

I have tried to find out what could be causing this and all searching points to a mismatch in versions of Firebase or dependant libraries. I have gone through the Flutter clean and update process but it has not helped.

Output of flutter doctor -v

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.13.6, on macOS 12.7 21G816 darwin-x64, locale en-GB)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 14.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.2)
[✓] VS Code (version 1.78.2)
[✓] VS Code (version 1.78.2)
[✓] Connected device (3 available)
[✓] Network resources

• No issues found!

Any update on this?

I recommend using firebase REST API for now

I'm running into this issue as well.

I've had the same problem. But it was my mistake - I've used a not initialized firebase instance within the isolate ...

commented

I've had the same problem. But it was my mistake - I've used a not initialized firebase instance within the isolate ...

When I initially made that mistake, it gave me a different error from this one. Definitely not the problem here.