why isnt my second view loading after transition? - ios

Question

I have two views, the initial one that works fine, and a second one that I am trying to display after I transition to it from a button on the first view.
However, when I click the button, the transition happens and the screen goes blank.
Below is the viewDidLoad inside of the UIViewController class for the second view.
Also when it hits the
let sKView = view as! SKVIEW
line it spits out
Could not cast value of type 'UIView' (0x10a313eb0) to 'SKView' (0x1094d5718).
(lldb)
How do I get it to display the view?
class PlayViewController: UIViewController {
var scene2: PlayScene!
override func viewDidLoad() {
super.viewDidLoad()
let skView = view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
scene2 = PlayScene(size: skView.bounds.size)
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene2.scaleMode = .AspectFill
skView.presentScene(scene2)
}
first class
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
// Configure the view.
let skView = self.view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
}
the second scene
import SpriteKit
class PlayScene: SKScene {
override func didMoveToView(view: SKView) {
/* Setup your scene here */
let myLabel = SKLabelNode(fontNamed:"Chalkduster")
myLabel.text = "SCENE 2!";
myLabel.fontSize = 65;
myLabel.position = CGPoint(x:CGRectGetMidX(self.frame), y:CGRectGetMidY(self.frame));
self.addChild(myLabel)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
/* Called when a touch begins */
for touch in (touches as! Set<UITouch>) {
let location = touch.locationInNode(self)
let sprite = SKSpriteNode(imageNamed:"Spaceship")
sprite.xScale = 0.5
sprite.yScale = 0.5
sprite.position = location
let action = SKAction.rotateByAngle(CGFloat(M_PI), duration:1)
sprite.runAction(SKAction.repeatActionForever(action))
self.addChild(sprite)
}
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}

Answer 1

The issue is your view controllers view is your everyday run of the mill UIView instead of an SKView. Assuming you are using a storyboard click on the view controller and then click on the view and change the class to SKView instead of UIView.
Hopefully that helps.

Answer 2

I am not sure what are you trying to archive, you can try change your super class from UIViewController to SpriteViewController or you can create a new SKView and append to your view.
You cannot downcast a UIView to a SKView as a SKView inherit from UIView as you can see in the apple documentation
Inherits From
NSObject
UIResponder
UIView
SKView