Spotlight search doesn't work when app not running

Question

I want to tell first UIViewController that Spotlight opened it. I try to make it by NSNotificationCenter. But I tried several methods and they don't it when I make my key like "spotlightOpen". When I use standard name like UIApplicationDidFinishLaunchingNotification it works for me. Below I wrote several methods which I tried

In

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
       NSNotificationCenter.defaultCenter().postNotificationName("selectSong", object: nil)

        return true
} 

In First controller

  NSNotificationCenter.defaultCenter().addObserverForName("selectSong", object: nil, queue: NSOperationQueue.mainQueue()) { (NSNotification) -> Void in
        print("Song table is loaded")
    }

Still I made it in the first controller. But it too didn't work for me.

NSNotificationCenter.defaultCenter().addObserver(self, selector: "selectedSong", name: "selectSong", object: nil)

 func application(application: UIApplication, continueUserActivity userActivity: NSUserActivity, restorationHandler: ([AnyObject]?) -> Void) -> Bool {
    print("continueUserActivity")
    userDefault.setBool(true, forKey: "applicationDelegateOpen")
    if userActivity.activityType == CSSearchableItemActionType {
        print("CSSearchableItemActionType")
        if let identifier = userActivity.userInfo?[CSSearchableItemActivityIdentifier] {
            userDefault.setValue(identifier, forKey: "spotlightIdentifier")
            userDefault.setBool(true, forKey: "spotlightBool")
            print(identifier)
            return true
        }
    }
    return false
}

Answer 1

I made it. It works for me

 override func viewDidAppear(animated: Bool) {
            super.viewDidAppear(animated)
            self.tableView.reloadData()
            self.tabBarController!.tabBar.hidden = false
            fetchFilesFromFolder()
            //
            checkSpotlightResult()
        }     
       func checkSpotlightResult() {
                print("checkSpotlightResult")
        //        print(arrayForCheckSpot)
        //        userDefault.setValue(identifier, forKey: "spotlightIdentifier")
        //        userDefault.setBool(true, forKey: "spotlightBool")
        //        var boolCheckSpot: Bool!
        //        var identifierCheckSpot: String!
                boolCheckSpot = userDefault.boolForKey("spotlightBool")
                if boolCheckSpot != nil {
                    if boolCheckSpot == true {
                    identifierCheckSpot = userDefault.valueForKey("spotlightIdentifier") as! String
                    if arrayForCheckSpot.contains(identifierCheckSpot) {
        //                print("Array title contains \(identifierCheckSpot)")
                        let index = arrayForCheckSpot.indexOf(identifierCheckSpot)!
                        let myIndexPath = NSIndexPath(forRow: index, inSection: 0)
                        print(myIndexPath)
                        self.tableView.selectRowAtIndexPath(myIndexPath, animated: true, scrollPosition: .None)
                        self.performSegueWithIdentifier("listenMusic", sender: self)
                        userDefault.setBool(false, forKey: "spotlightBool")
                        }
                    }
                }
            }