defaultTracker is nil in Google Analytics for IOS

Question

I'm trying to set up Google Analytics in my iOS app by following this guide Google Analytics for iOS I have completed all the steps but when I run my app it crashes and says that my defaultTracker is nil. This is the following code in my ViewController:

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    var tracker = GAI.sharedInstance().defaultTracker
    tracker.set(kGAIScreenName, value: nil)

    var builder = GAIDictionaryBuilder.createScreenView()
    tracker.send(builder.build() as [NSObject : AnyObject])

}

In my AppDelegate I have this code that should initialize everything regarding the tracker:

func applicationDidFinishLaunching(application: UIApplication) {
    // Configure tracker from GoogleService-Info.plist.
    var configureError:NSError?
    GGLContext.sharedInstance().configureWithError(&configureError)
    assert(configureError == nil, "Error configuring Google services: \(configureError)")

    // Optional: configure GAI options.
    var gai = GAI.sharedInstance()
    gai.trackUncaughtExceptions = true  // report uncaught exceptions
    gai.logger.logLevel = GAILogLevel.Verbose  // remove before app release
}

Does anyone know what the problem might be and how to solve it?

Thanks in advance Vatan

Answer 1

I had same issue, fixed with adding default tracker initialization at AppDelegate applicationDidFinishLaunching method like below;

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    //...

    var gai = GAI.sharedInstance()
    gai.trackUncaughtExceptions = true  // report uncaught exceptions
    gai.defaultTracker = gai.trackerWithTrackingId("UA-XXXXX-X")
    //...
 }