在Spritekit中，我无法弹出GameCenter视图

Question

我正在用Sprite Kit开发游戏，在我使用GameCenter之前一切正常，这是我的代码

define the Gameviewcontroller:

var GameController:GameViewController = GameViewController()

当您触摸TouchecBegan内部的节点时：

    let touchLocation = (touches as NSSet).anyObject()?.locationInNode(self)

    let targetNode = self.nodeAtPoint(touchLocation!)

    if targetNode.name == "leader"{

        print("hhhh")

        GameController.showGamecenetr()

    }

并且内部GameViewController的代码ShowGameCenter ：

func showGamecenetr() {

    print("jijijijji")

    GameKitHelper.sharedInstance.showGKGameCenterViewController(self)

}

它应该弹出GameCenter的视图，但显示错误：

无法将类型UIView值转换为SubView

我发现这是一个非常简单的错误，但是我以前从未在这里遇到过，我也不知道如何处理它，有人可以帮我吗？

这是showGKGameCenterViewController()中的代码

func showGKGameCenterViewController(viewController:UIViewController!){

    if !gamecenterEnable {

        print("No user!")
        return 
        }

    let gameCenterViewController = GKGameCenterViewController()

    gameCenterViewController.gameCenterDelegate = self

    gameCenterViewController.viewState = .Leaderboards
    viewController.presentViewController(gameCenterViewController, animated: true, completion: nil)

    }

帮助帮助;（

Answer 1

因此，我假设您对本地播放器/用户进行了身份验证。 要打开GameCenter只需在您的场景中这样做即可

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

    for touch in touches {
        let location = touch.locationInNode(self)
        let touchedNode = nodeAtPoint(location)

        if targetNode.name == "leader"{
            let gcViewController: GKGameCenterViewController = GKGameCenterViewController()
            gcViewController.gameCenterDelegate = self

            gcViewController.leaderboardIdentifier = kLeaderboardID

            gcViewController.viewState = GKGameCenterViewControllerState.Leaderboards
            let vc: UIViewController = self.view!.window!.rootViewController!
            vc.presentViewController(gcViewController, animated: true, completion: nil)  
        }
    }
}

场景中的GKGameCenterControlleDelegate

class GameScene: SKScene, GKGameCenterControllerDelegate {

和

func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController) {

    AppDelegate().resumeBackgroundMusic()
    gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}