[Core]: "No app has been configured yet" message on iOS about flutterfire HOT 7 CLOSED

Hello @qwadrox,

Thank you for your report. Based on the comment here, it seems this issue stems from the underlying native plugin, and we might not be able to address it directly. Could you confirm if you have any issues related to or caused by this?

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Hi @qwadrox
i am facing same issue my flutter version is 3.22.0 and firebase_core version is 3.0.0
Your workaround is not working for me.
Can someone please help, trying to figure it out from 2-3 days

the error i am getting is-

flutter: PlatformException(channel-error, Unable to establish connection on channel., null, null)
flutter: #0 FirebaseCoreHostApi.initializeCore (package:firebase_core_platform_interface/src/pigeon/messages.pigeon.dart:210:7)

#1 MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:29:44)

#2 MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:73:7)

#3 Firebase.initializeApp (package:firebase_core/src/firebase.dart:43:31)

#4 initialChecks (package:creatics_mobile/main.dart:108:3)

#5 main. (package:creatics_mobile/main.dart:75:11)

#6 main (package:creatics_mobile/main.dart:73:3)

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()
#0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:193:5)
#1 Firebase.app (package:firebase_core/src/firebase.dart:56:41)
#2 FirebaseCrashlytics.instance (package:firebase_crashlytics/src/firebase_crashlytics.dart:33:55)
#3 main. (package:creatics_mobile/main.dart:81:27)
#4 _RootZone.runBinary (dart:async/zone.dart:1666:54)
#5 runZonedGuarded. (dart:async/zone.dart:1798:18)
#6 _Zone._processUncaughtError (dart:async/zone.dart:1081:14)
#7 _CustomZone.handleUncaughtError (dart:async/zone.dart:1285:5)

from flutterfire.

Hi @qwadrox
i am facing same issue my flutter version is 3.22.0 and firebase_core version is 3.0.0
Your workaround is not working for me.
Can someone please help, trying to figure it out from 2-3 days

the error i am getting is-

flutter: PlatformException(channel-error, Unable to establish connection on channel., null, null)
flutter: #0 FirebaseCoreHostApi.initializeCore (package:firebase_core_platform_interface/src/pigeon/messages.pigeon.dart:210:7)

#1 MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:29:44)

#2 MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:73:7)

#3 Firebase.initializeApp (package:firebase_core/src/firebase.dart:43:31)

#4 initialChecks (package:creatics_mobile/main.dart:108:3)

#5 main. (package:creatics_mobile/main.dart:75:11)

#6 main (package:creatics_mobile/main.dart:73:3)

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()
#0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:193:5)
#1 Firebase.app (package:firebase_core/src/firebase.dart:56:41)
#2 FirebaseCrashlytics.instance (package:firebase_crashlytics/src/firebase_crashlytics.dart:33:55)
#3 main. (package:creatics_mobile/main.dart:81:27)
#4 _RootZone.runBinary (dart:async/zone.dart:1666:54)
#5 runZonedGuarded. (dart:async/zone.dart:1798:18)
#6 _Zone._processUncaughtError (dart:async/zone.dart:1081:14)
#7 _CustomZone.handleUncaughtError (dart:async/zone.dart:1285:5)

Your issue is completely different than mine. I didn't have platform exception.

But this might help:
https://stackoverflow.com/questions/72880037/unhandled-exception-platformexceptionchannel-error-unable-to-establish-connec
https://stackoverflow.com/questions/72833245/calling-firebase-initializeapp-returns-unable-to-establish-connection-on-chan

from flutterfire.

Hello @qwadrox,

Thank you for your report. Based on the comment here, it seems this issue stems from the underlying native plugin, and we might not be able to address it directly. Could you confirm if you have any issues related to or caused by this?

@TarekkMA
I understand, but I think the documentation should be updated regarding this side effect since the official way to configure Firebase is through the FlutterFire CLI.

Another improvement would be to print a message indicating successful initialization when it happens from the Dart code.

from flutterfire.

@qwadrox - If you manually add the GoogleService-Info.plist to the Runner, you still don't need to manually update your AppDelegate.
This is enough:

 await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

this is probably why you're seeing that log in your console.

from flutterfire.

@qwadrox - If you manually add the GoogleService-Info.plist to the Runner, you still don't need to manually update your AppDelegate. This is enough:

 await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

this is probably why you're seeing that log in your console.

@russellwheatley
"If you manually add the GoogleService-Info.plist to the Runner" I've added it, but i have to still edit AppDelegate. I use a build script for that in my app.
In the repro sample I did add as well: https://github.com/qwadrox/my_catalog_app/blob/bug/firebase-core-not-being-initialized/ios/Runner/GoogleService-Info.plist

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Sorry, I just realised what you were referring to. We check allApps here: https://github.com/firebase/flutterfire/blob/master/packages/firebase_core/firebase_core/ios/Classes/FLTFirebaseCorePlugin.m#L46

Which outputs this log:https://github.com/firebase/firebase-ios-sdk/blob/f3ce673e624e67f39dd5462731a70277d0290595/FirebaseCore/Sources/FIRApp.m#L264

which is not an error, it is a warning that can be safely ignored. We literally configure the app in the next line: https://github.com/firebase/flutterfire/blob/master/packages/firebase_core/firebase_core/ios/Classes/FLTFirebaseCorePlugin.m#L47

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