Unable to run flutter app on IOS - Default app has been already configured

Question

I had just setup firebase in my app and tried to run it on my iOS device through Xcode, after a long wait the app got installed on my phone but wouldn't launch, the error shown was as follows -

Terminating app due to uncaught exception 'com.firebase.core', reason: 'Default app has already been configured.'

This is my AppDelegate.swift file -:

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    if FirebaseApp.app() == nil {
        FirebaseApp.configure()
    }
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

Please help me solve this, thanks in advance.

// Configure Firebase // ------------------ if FIRApp.defaultApp() == nil { FIRApp.configure() } — Harry R
– Harry R, Commented Mar 23, 2021 at 5:16

Harry R · Accepted Answer · 2022-10-20 08:45:15Z

0

I was able to solve the issue by adding this line of code -

// Configure Firebase // ------------------ if FIRApp.defaultApp() == nil { FIRApp.configure() }

You can also check a similar issue for a detailed answer -

App crashing when using Firebase Auth, reason: 'Default app has already been configured.'

answered Oct 20, 2022 at 8:45

Harry R

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