AppDelegate.swift

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
  let branch = Branch.getInstance()
    branch.initSessionWithLaunchOptions(launchOptions, andRegisterDeepLinkHandler: { params, error in
      if (error != nil) {
        TrackingManager.track(eventName: "Branch failed", withProperties: ["errorMsg": error.localizedDescription, "code": "\(error.code)"], timed: false)
      }
    }
  }
}