When i build app for xamarin ios the below issue/warning occurs. Error: The default Firebase app has not yet been configured. Add [FIRApp configure]; ( FirebaseApp.configure() in Swift) to your application initialization. Read more: https://goo.gl/ctyzm8 . [Firebase/Crashlytics] Version 4.6.2 List of plugins attached here.

Hello, Welcome to Microsoft Q&A! As the error shows , you need to add initialization code in didFinishLaunchingWithOptions in AppDelegate.cs . FirebaseApp.configure() Refer to https://firebase.google.com/docs/ios/setup#swift_1 . Thank you. If the response is helpful, please click " Accept Answer " and upvote it. Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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The default Firebase app has not yet been configured. Add `[FIRApp configure];` In xamarin forms(iOS)

Raghavendra G R 121

When i build app for xamarin ios the below issue/warning occurs.

Error:

The default Firebase app has not yet been configured. Add [FIRApp configure]; (FirebaseApp.configure() in Swift) to your application initialization. Read more: https://goo.gl/ctyzm8.
[Firebase/Crashlytics] Version 4.6.2

List of plugins attached here.

2 answers

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-19T07:28:14.94+00:00
Hello,

Welcome to Microsoft Q&A!

As the error shows , you need to add initialization code in didFinishLaunchingWithOptions in AppDelegate.cs .

FirebaseApp.configure()

Refer to https://firebase.google.com/docs/ios/setup#swift_1 .

Thank you.

If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
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Raghavendra G R 121 Reputation points

2021-01-19T07:43:00.21+00:00

No luck.. I'm looking for solutions in xamarin forms(xamarin ios). this looks to be swift solutions.

Error: "FirebaseApp" doesn't exist in current context.

If i'm missing something(to add any plugin, please the screenshot attached above) please correct me.

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-19T08:14:21.887+00:00

Could you attach the link of default Firebase app ?

Raghavendra G R 121 Reputation points

2021-01-19T08:17:02.42+00:00

Dint get you. I have attached the list of xamarin plugins i added from nuget.

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-19T09:16:25.097+00:00

What functionality did you want to implement ? Firebase CloudMessaging or Firebase Crashlytics or both of them ?

Raghavendra G R 121 Reputation points

2021-01-19T09:19:32.517+00:00

Wanted to implement Firebase Crashlytics..

And i have commented the below line as new Xamarin.Firebase.iOSCrashlytics(4.6.2) doesn't need it.

In AppDelegate.cs //Crashlytics.Configure();

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-20T08:48:27.95+00:00

It seems Firebase.Core.App.Configure(); is also needed , did you add it ?

Raghavendra G R 121 Reputation points

2021-01-20T09:15:39.79+00:00

Yeah i tried that, But the app crashes with below message.

Error:
Objective-C exception thrown. Name: com.firebase.core Reason: Default app has already been configured.

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-21T08:10:31.64+00:00

Ensure that you call Firebase.Core.App.Configure(); only once in your project .

I test with Xamarin.Firebase.iOS.Crashlytics 4.6.2 , it works without any error .

Raghavendra G R 121 Reputation points

2021-01-28T10:17:55.363+00:00

I have done something like this
if(Firebase.Core.App.DefaultInstance == null) {
Firebase.Core.App.Configure();
}

But i don't think "Firebase.Core.App.Configure();" will be executed.

Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points

2021-01-30T06:42:12.97+00:00

Replace

if(Firebase.Core.App.DefaultInstance == null) { Firebase.Core.App.Configure(); }

With

Firebase.Core.App.Configure();

Raghavendra G R 121 Reputation points

2021-02-01T05:04:41.727+00:00

HI @Cole Xia (Shanghai Wicresoft Co,.Ltd.)
As you told me to call 'Firebase.Core.App.Configure()' only once in the project, i added an if check.

And as i already told, if i just add 'Firebase.Core.App.Configure();' without the null check app will crash with below exception.

Exception:
Objective-C exception thrown. Name: com.firebase.core Reason: Default app has already been configured.
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Son4D 0 Reputation points

2025-02-13T14:56:33.54+00:00

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The default Firebase app has not yet been configured. Add `[FIRApp configure];` In xamarin forms(iOS)

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