FirebaseApp.configure() hat einen Fehler mit der ungelösten Bezeichner 'FirebaseApp'

Ihrem appdelegate-Klasse sollte wie folgt Aussehen:

import UIKit
import Firebase

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

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

    func applicationWillResignActive(_ application: UIApplication) {
        //Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        //Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        //Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        //If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        //Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        //Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        //Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }
}

Ich bin vorausgesetzt, Sie verwenden xcode 8 und swift 3.

Versuchen pod " FB "anstelle des Pods " FB/Core'

Und überprüfen Sie, ob FB 4.x wurde installiert, nachdem "pod install"

Die Lösung von morganchen12 an dieser GitHub Kommentar löste das gleiche Problem bei mir. Ich brauchte, um zu ändern, das Podfile für die unit-tests (OP bereits abgeschlossen), und fügen Sie dann der Feuerstellung, um die Header-Suchpfade.

Für die Erhaltung der Kommentar:

Das Problem wird verursacht, durch doppelte FIRApp Klassen-Definitionen in die test-runtime.

Ihre Podfile sollte wie folgt Aussehen:

target "FirebaseDemo" do
  install_pods

  target "FirebaseDemoTests" do
    inherit! :search_paths
  end
end

Um zu vermeiden, das fehlen erforderliche Modul FB-Fehler, fügen Sie "${PODS_ROOT}/FB/Core/Sources" nach dem Ende der test-target-Header-Suchpfade in Xcode.