CODEWITHSUNDEEP
iosswiftfirebasegoogle-cloud-firestore
Pseudonym Patel
Pseudonym Patel

Reputation: 479

Error: `call FirebaseApp.configure() before using Firestore`

Background Info

I have started developing a backend for an simple App, and I have set up a database class (named DBDelegate) that all the files will communicate with. In my AppDelegate.swift I have this:

static public var dbDelegate:DBDelegate = DBDelegate()

private func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    FirebaseApp.configure()
    return true
}

Its a static public so I can access the dbDelegate from other files.

In my other files, I have the following to help readability: (because it is a class it will pass by reference)

let dbDelegate = AppDelegate.dbDelegate

In my DBDelegate class:

var db = Firestore.firestore()
init() {
    FirebaseApp.configure()
}

Building and Running

When I build my code, it builds fine.

On run, the app promptly crashes with SIGABRT. The error message is:
Terminating app due to uncaught exception 'FIRAppNotConfiguredException', reason: 'Failed to get FirebaseApp instance. Please call FirebaseApp.configure() before using Firestore'

What I have tried

    static public var dbDelegate:DBDelegate!
    private func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        FirebaseApp.configure()
        dbDelegate = DBDelegate()
        return true
    }

Any help would be great!

Edit: I found a janky solution, see below.

Upvotes: 2

Views: 6403

Answers (5)

U.sah
U.sah

Reputation: 1

I got the same issue because my pod version it old. So the solution is

  1. Check your pods by using command pod --version
    If pod the version is old or not the same, CocoaPods needs to update. Use comment sudo gem install CocoaPods

  2. After it has completed you need to check your pods again use command pod --version make sure your pod version is upgraded

  3. cd to your project directory then use command pod deintegrate
    After the command completed then use pod install

  4. Open your project workspace, build & run

Upvotes: 0

JoeBlender
JoeBlender

Reputation: 49

You can override the AppDelegate init method with FirebaseApp.configure() and make sure it loads before any windows are created.

override init() {
        FirebaseApp.configure()
}

Upvotes: 3

James Allan
James Allan

Reputation: 71

Chances are your code are in the wrong order. Make sure your window code are put AFTER the firebaseApp.configure and not before. I was getting the same crash until I simply placed my window creation codes: (window = UIWindow(frame: UIScreen.main.bounds), etc) after the firebaseApp.configure connection .Just swapped their placement:

    FirebaseApp.configure()
    let db = Firestore.firestore()
    let settings =  db.settings
    settings.areTimestampsInSnapshotsEnabled = true
    db.settings = settings

    window = UIWindow(frame: UIScreen.main.bounds)
    window?.rootViewController = HomeController()
    window?.makeKeyAndVisible()

Upvotes: 2

Pseudonym Patel
Pseudonym Patel

Reputation: 479

Firstly, I would like to thank @DionzB for suggesting using singletons (which I did). I will reference his/her post in this answer.

Ok, so after some research and playing with breakpoints, I found that my custom class actually executes before the AppDelegate. Knowing such, I created a variable before the following line:

static let shared = FirebaseService()

the name does not matter, because I/you will not call it, and assign it to FirebaseApp.configure()

The FirebaseService class becomes:

class FirebaseService: NSObject {
    let constantToNeverTouch = FirebaseApp.configure()
    static let shared = FirebaseService()

    init() {
    }
}

Next, you must make sure that FirebaseApp.configure() is no where else in your code. It should not be in the AppDelegate either. Having multiple FirebaseApp.configure()'s crashes the app.

Upvotes: 4

DionizB
DionizB

Reputation: 1507

It would be better to create a new singleton for Firebase.

class FirebaseService: NSObject {
    static let shared = FirebaseService()

    init() {
         FirebaseApp.configure()
    }
}

Then you can access everything via shared like: 

FirebaseService.shared.methodName

For configuring in app delegate you would need to call it like: 

_ = FirebaseService.shared

Upvotes: 2

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