Game Center Not Properly Working. Swift, Sprite Kit - swift

Question

I recently tried to add Game Center to my Sprite Kit Game, but it's not working properly.
When the game starts in the simulator, the Game Center login page does show up. When I start the game on my phone it does not. Can someone tell me what I am doing wrong.
//GameViewController.Swift
import GameKit
class GameViewController: UIViewController, ADBannerViewDelegate, GKGameCenterControllerDelegate {
var bannerView:ADBannerView?
override func viewDidLoad() {
super.viewDidLoad()
// Presenting scene without using GameScene.sks
let skView = view as! SKView
let myScene = GameScene(size: skView.frame.size)
myScene.scaleMode = .ResizeFill
skView.presentScene(myScene)
authenticateLocalPlayer()
}
//initiate gamecenter
func authenticateLocalPlayer(){
var localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {(viewController, error) -> Void in
if (viewController != nil) {
self.presentViewController(viewController, animated: true, completion: nil)
}
else {
println((GKLocalPlayer.localPlayer().authenticated))
}
}
}
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController!)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
//GameScene.Swift
import GameKit
class GameScene: SKScene, SKPhysicsContactDelegate{
var playerScore = 0
func playerScoreUpdate() {
playerScorelabel.text = "\(playerScore)"
}
func saveHighScore(high:Int) {
NSUserDefaults.standardUserDefaults().setInteger(high, forKey: "highscore")
//check if user is signed in
if GKLocalPlayer.localPlayer().authenticated {
var scoreReporter = GKScore(leaderboardIdentifier: "TF1G002ID") //leaderboard id here
scoreReporter.value = Int64(playerScore) //score variable here (same as above)
var scoreArray: [GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: {(error : NSError!) -> Void in
if error != nil {
println("error")
}
})
}
}
//GameOver.Swift
import GameKit
class GameOverScene: SKScene, GKGameCenterControllerDelegate {
//shows leaderboard screen
func showLeader() {
var vc = self.view?.window?.rootViewController
var gc = GKGameCenterViewController()
gc.gameCenterDelegate = self
vc?.presentViewController(gc, animated: true, completion: nil)
}
// Press Finger
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
for touch: AnyObject in touches {
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if node.name == "replay" {
playSound(sound)
}
if node.name == "leaderboard" {
showLeader()
}
}
}
//hides leaderboard screen
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController!)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}

Answer 1

Did you import the GameKit framework into your app?
Go to your project -> General -> scroll until you see linked frameworks -> click the plus sign -> add GameKit framework by searching