ios - 简单的 Sprite Kit 场景设置出错

Question

我正在尝试设置一个简单的 Sprite Kit 设置。我所做的只是从“空应用程序”重新创建默认的 xCode 模板“Sprite Kit Game”。

它一直在 skView.showsFPS = YES; 行崩溃。我无法解释。你能？谢谢!

部分代码:

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:    (NSDictionary *)launchOptions
{
  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  MenuController *menuController = [[MenuController alloc] init];
  self.window.rootViewController = menuController;
  [self.window makeKeyAndVisible];
  return YES;
}

MenuController.m

- (void)viewDidLoad
{
  [super viewDidLoad];

  SKView *skView = (SKView *)self.view;
  skView.showsFPS = YES;
  skView.showsNodeCount = YES;

  MultiplayerView *gameView = [MultiplayerView sceneWithSize:skView.bounds.size];
  gameView.scaleMode = SKSceneScaleModeAspectFill;

  [skView presentScene:gameView];
}

当我启动它时，出现以下错误:

2013-11-10 13:08:01.605 ByS[9419:70b] -[UIView setShowsFPS:]: unrecognized selector sent to instance 0x10c00bc60
2013-11-10 13:08:01.608 ByS[9419:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView setShowsFPS:]: unrecognized selector sent to instance 0x10c00bc60'

Answer 1

在界面生成器中，将窗口 View 的类更改为SKView。将 UIView 类型转换为 SKView 不会执行任何操作，除非 UIView 之前是通过转换 SKView 获得的.