Ios 在场景中显示CenterViewController

我正在努力解决以下问题：

我用SpriteKit做了一个游戏。我在我的游戏中实现了

GameCenter

。它起作用了。玩家自动登录，高分将添加到默认排行榜。但例如，在“EndScreen”中，我想显示

GameCenterLeadboard

Appledocumentation告诉我应该使用以下代码：

- (void) showGameCenter

{

GKGameCenterViewController *gameCenterController = [[GKGameCenterViewController alloc] init];

if (gameCenterController != nil)

{

gameCenterController.gameCenterDelegate = self;

[self presentViewController: gameCenterController animated: YES completion:nil];

}

}

但是

presentViewController

不工作。有没有办法从

SKScene

切换到我的标准

ViewController

。或者，我如何在按下按钮的情况下显示

GameCenter排行榜

老实说，我对编程很陌生，所以这个问题对你们来说可能不是一个大问题。

---

非常感谢您的帮助。

是的，有一种方法，您可以直接从

-（void）showGameCenter

调用此代码：

  UIViewController *vc = self.view.window.rootViewController;
  [vc presentViewController: gameCenterController animated:YES completion:Nil];

---

您可以使用通知告诉

ViewController

显示排行榜

ViewController.m

：

@implementation GameSceneViewController

- (void)awakeFromNib {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(showGameCenter)
                                                 name:@"ShowLeaderboard"
                                               object:nil];
}

- (void) dealloc
{
    // If you don't remove yourself as an observer, the Notification Center
    // will continue to try and send notification objects to the deallocated
    // object.
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

.....

- (void)showLeaderboard {    
        [[NSNotificationCenter defaultCenter] 
             postNotificationName:@"ShowLeaderboard"
                           object:nil
                         userInfo:nil];
}

SKScene.m

：

@implementation GameSceneViewController

- (void)awakeFromNib {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(showGameCenter)
                                                 name:@"ShowLeaderboard"
                                               object:nil];
}

- (void) dealloc
{
    // If you don't remove yourself as an observer, the Notification Center
    // will continue to try and send notification objects to the deallocated
    // object.
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

.....

- (void)showLeaderboard {    
        [[NSNotificationCenter defaultCenter] 
             postNotificationName:@"ShowLeaderboard"
                           object:nil
                         userInfo:nil];
}