我的按钮确实让我去了＆＃34; playscene＆＃34; swift sprite kit

Question

我一直试图这样做很长一段时间。我的问题是，当我使用此代码时（我在YouTube上了解到），它在第5行给出了一个错误，它声明了SKView。它 给我这个错误

  

来自SKView的垂头丧气？＆＃39;到＆＃39; SKView＆＃39;只打开选项;你是否   意思是使用＆＃39;！＆＃39;？

这是我的代码：

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    /* Called when a touch begins */
    //making the scene vars
    var scene =  PlayScene(size: self.size)

    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
         let node = self.nodeAtPoint(location)
        var scene = PlayScene(size: self.size)
        let skView = self.view as SKView
        skView.ignoresSiblingOrder = true
        scene.scaleMode = .ResizeFill
        scene.size = skView.bounds.size
        skView.presentScene(scene)
    }
}

Answer 1

替换此行：

    let skView = self.view as SKView

这一行：

    let skView = self.view!