Hiding or Showing Google Ad View in Swift with Sprite Kit - swift

Question

In my game I would like there to be an Google Banner View in the main menu scene and game over scene. Here's what I have in the GameViewController:
override func viewWillLayoutSubviews(){
super.viewWillLayoutSubviews()
let skView = self.view as! SKView
googleBannerView = GADBannerView(adSize: kGADAdSizeSmartBannerPortrait)
googleBannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716"
googleBannerView.rootViewController = self
var request: GADRequest = GADRequest()
googleBannerView.loadRequest(request)
googleBannerView.frame = CGRectMake(0, skView.bounds.height - googleBannerView.frame.size.height, googleBannerView.frame.size.width, googleBannerView.frame.size.height)
self.view.addSubview(googleBannerView!)
if skView.scene == nil{
let mainMenuScene = MainMenuScene(size: skView.bounds.size)
mainMenuScene.scaleMode = SKSceneScaleMode.AspectFill
mainMenuScene.backgroundColor = UIColor.whiteColor()
skView.presentScene(mainMenuScene)
}
}
func showBanner(){
if googleBannerView != nil{
self.googleBannerView!.hidden = false
var request: GADRequest = GADRequest()
self.googleBannerView.loadRequest(request)
}
}
func hideBanner(){
println("hideBanner() called")
self.googleBannerView.hidden = true
}
In the GameScene I have this:
override init(size: CGSize) {
super.init(size: size)
let gameViewController = GameViewController()
gameViewController.hideBanner()
When I run this it starts up fine, but when I press play it crashes and says: fatal error: unexpectedly found nil while unwrapping an Optional value. This doesn't make much sense because it can't be nil because I know there is an ad banner, right? What I am doing wrong. Thank you in advance.
-Vinny

Answer 1

There could possibly be an error in your show banner function. Try taking out the exclamation in:
self.googleBannerView!.hidden = false
If the banner view is not nil, then it doesn't need to unwrapped