Black screen with SpriteKit

Question

I was following a tutorial on building a "Pop the lock type" game and when I go to run it in the simulator a black screen shows up. I looked the up before and tried to reset the simulator and restart the computer but it doesn't work can someone please help me and tell me why this happens

import SpriteKit

class GameScene: SKScene {

var Circle = SKSpriteNode()
var Person = SKSpriteNode()
var Dot = SKSpriteNode()

var Path = UIBezierPath()

var gameStarted = Bool()

var movingClockwise = Bool()
var intersected = false


var LevelLabel = UILabel()

    var currentLevel = Int()
    var currentScore = Int()
    var highLevel = Int()

    var View1 = UIView()
    var View2 = UIView()

  override func didMoveToView(view: SKView) {
        let Defaults = NSUserDefaults.standardUserDefaults() as NSUserDefaults!
        if Defaults.integerForKey("HighLevel") != 0{
            highLevel = Defaults.integerForKey("HighLevel") as Int!
            currentLevel = highLevel
            currentScore = currentLevel
            LevelLabel.text = "\(currentScore)"
}
        else{

            Defaults.setInteger(1, forKey: "HighLevel")
}

        View1 = UIView(frame: CGRect(origin: CGPoint(x: self.frame.width / 2 + 120, y: self.frame.height / 2), size: CGSize(width: self.frame.width, height: self.frame.height)))
        View1.addSubview(view)







    }

    func loadView(){
        movingClockwise = true
        backgroundColor = SKColor.whiteColor()
        Circle = SKSpriteNode(imageNamed: "Circle")
        Circle.size = CGSize(width: 300, height: 300)
        Circle.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame))
        self.addChild(Circle)

        Person = SKSpriteNode(imageNamed: "Person")
        Person.size = CGSize(width: 40, height: 7)
        Person.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2 + 120)
        Person.zRotation = 3.14 / 2
        Person.zPosition = 2.0
        self.addChild(Person)
        AddDot()


        LevelLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 150, height: 100))
        LevelLabel.center = (self.view?.center)!
        LevelLabel.text = "\(currentScore)"
        LevelLabel.textColor = SKColor.darkGrayColor()
        LevelLabel.textAlignment = NSTextAlignment.Center
        LevelLabel.font = UIFont.systemFontOfSize(60)
        self.View1.addSubview(LevelLabel)


    }


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

        if gameStarted == false{
            moveClockWise()
            movingClockwise = true
            gameStarted = true
        }
        else if gameStarted == true{

            if movingClockwise == true{

                moveCounterClockWise()
                movingClockwise = false
            }
            else if movingClockwise == false{

                moveClockWise()
                movingClockwise = true
            }
            DotTouched()
        }



    }



    func AddDot(){

        Dot = SKSpriteNode(imageNamed: "Dot")
        Dot.size = CGSize(width: 30, height: 30)
        Dot.zPosition = 1.0

        let dx = Person.position.x - self.frame.width / 2
        let dy = Person.position.y - self.frame.height / 2

        let rad = atan2(dy, dx)

        if movingClockwise == true{
            let tempAngle = CGFloat.random(min: rad - 1.0, max: rad - 2.5)
            let Path2 = UIBezierPath(arcCenter: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2), radius: 120, startAngle: tempAngle, endAngle: tempAngle + CGFloat(M_PI * 4), clockwise: true)
            Dot.position = Path2.currentPoint

        }
        else if movingClockwise == false{
            let tempAngle = CGFloat.random(min: rad + 1.0, max: rad + 2.5)
            let Path2 = UIBezierPath(arcCenter: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2), radius: 120, startAngle: tempAngle, endAngle: tempAngle + CGFloat(M_PI * 4), clockwise: true)
            Dot.position = Path2.currentPoint


        }
        self.addChild(Dot)


    }


    func moveClockWise(){

        let dx = Person.position.x - self.frame.width / 2
        let dy = Person.position.y - self.frame.height / 2

        let rad = atan2(dy, dx)

        Path = UIBezierPath(arcCenter: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2), radius: 120, startAngle: rad, endAngle: rad + CGFloat(M_PI * 4), clockwise: true)
        let follow = SKAction.followPath(Path.CGPath, asOffset: false, orientToPath: true, speed: 200)
        Person.runAction(SKAction.repeatActionForever(follow).reversedAction())

    }

    func moveCounterClockWise(){

        let dx = Person.position.x - self.frame.width / 2
        let dy = Person.position.y - self.frame.height / 2

        let rad = atan2(dy, dx)

        Path = UIBezierPath(arcCenter: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2), radius: 120, startAngle: rad, endAngle: rad + CGFloat(M_PI * 4), clockwise: true)
        let follow = SKAction.followPath(Path.CGPath, asOffset: false, orientToPath: true, speed: 200)
        Person.runAction(SKAction.repeatActionForever(follow))


    }

    func DotTouched(){
        if intersected == true{
            Dot.removeFromParent()
            AddDot()
            intersected = false

            currentScore--
            LevelLabel.text = "\(currentScore)"
            if currentScore <= 0{
                nextLevel()

            }

        }
        else if intersected == false{

            died()
        }

    }

    func nextLevel(){
        currentLevel++
        currentScore = currentLevel
        LevelLabel.text  = "\(currentScore)"
        won()
        if currentLevel > highLevel{
            highLevel = currentLevel
            let Defaults = NSUserDefaults.standardUserDefaults()
            Defaults.setInteger(highLevel, forKey: "HighLevel")
        }


    }



    func died(){
        self.removeAllChildren()
        let action1 = SKAction.colorizeWithColor(UIColor.redColor(), colorBlendFactor: 1.0, duration: 0.2)
        let action2 = SKAction.colorizeWithColor(UIColor.whiteColor(), colorBlendFactor: 1.0, duration: 0.2)
        self.scene?.runAction(SKAction.sequence([action1,action2]))
        intersected = false
        gameStarted = false
        LevelLabel.removeFromSuperview()
        currentScore = currentLevel
        self.loadView()


    }
    func won(){
        self.removeAllChildren()
        let action1 = SKAction.colorizeWithColor(UIColor.greenColor(), colorBlendFactor: 1.0, duration: 0.2)
        let action2 = SKAction.colorizeWithColor(UIColor.whiteColor(), colorBlendFactor: 1.0, duration: 0.2)
        self.scene?.runAction(SKAction.sequence([action1,action2]))
        intersected = false
        gameStarted = false
        LevelLabel.removeFromSuperview()
        self.loadView()


    }



    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */

        if Person.intersectsNode(Dot){
            intersected = true

        }
        else{
            if intersected == true{
                if Person.intersectsNode(Dot) == false{
                    died()
                }

            }

        }


    }
}

Answer 1

用View1.addSubview(view) self.view?.addSubview(View1)替换View1.addSubview(view) self.view?.addSubview(View1)