如何在SKScene中正确设置UIButton

Question

我在Scene/View中设置了UIButton，按钮显示ViewController调用Scene的时间。问题是当我点击按钮，我的GameScene将被调用，按钮将仍然存在。我想我以错误的方式设置了按钮。
我想问题是我不能在我的startGame函数中的button1上调用removeFromSuperview()函数。

我该如何解决这个问题？任何帮助表示赞赏！

import Foundation 
import SpriteKit 
import UIKit 

class MenuScene: SKScene { 


    override init(size: CGSize) { 

     super.init(size: size) 

     backgroundColor = SKColor.grayColor() 

     let label = SKLabelNode(fontNamed: "CourierNewPS-BoldMT") 
     label.text = "Start Game" 
     label.fontSize = 40 
     label.fontColor = SKColor.blackColor() 
     label.position = CGPoint(x: size.width/2, y: size.height/2) 
     addChild(label) 
    } 


    override func didMoveToView(view: SKView) { 

     let button1=UIButton(frame: CGRectMake(size.width/2, size.height/2, 300, 100)) 
     button1.backgroundColor = UIColor.greenColor() 
     button1.setTitleColor(UIColor.blackColor(), forState: .Normal) 
     button1.setTitle("Unfocused", forState: .Normal) 
     button1.setTitle("Start", forState: .Focused) 
     button1.addTarget(self, action: "startGame:", forControlEvents: UIControlEvents.PrimaryActionTriggered) 

     self.view?.addSubview(button1) 
    } 



    func startGame(sender:UIButton) { 
     let gameView = view! as SKView 
     gameView.ignoresSiblingOrder = true 

     let reveal = SKTransition.flipHorizontalWithDuration(0.2) 
     let scene = GameScene(size: self.size) 
     gameView.presentScene(scene, transition:reveal) 

    } 


    required init(coder aDecoder: NSCoder) { 
     fatalError("init(coder:) has not been implemented") 
    } 
} 

Answer 1

你必须从startGame(sender:UIButton)法sender访问您button1对象。在这种情况下，参考button1。你可以拨打removeFromSuperview的方法：

func startGame(sender:UIButton) { 
    let gameView = view! as SKView 
    gameView.ignoresSiblingOrder = true 

    let reveal = SKTransition.flipHorizontalWithDuration(0.2) 
    let scene = GameScene(size: self.size) 
    gameView.presentScene(scene, transition:reveal) 

    sender.removeFromSuperview() 
}