Controller does not resize the views when ADBannerView added - ios

Question

Reading through Apple's documentation on iAD I got the impression, that if I'll add the ADBannerView to my controller's view tree - other views will be scaled to fit the add. But apparently that's not the case as you can see here :
That's the code I'm using :
import UIKit
import SpriteKit
import iAd
class GameViewController: UIViewController, ADBannerViewDelegate {
var mainView: SKView!
let adBanner = ADBannerView(adType: .Banner)
override func viewDidLoad() {
super.viewDidLoad()
mainView = self.view as? SKView
mainView.showsDrawCount = true
mainView.showsNodeCount = true
mainView.showsFPS = true
adBanner.delegate = self
adBanner.center = CGPoint(x: adBanner.center.x, y: mainView.bounds.size.height - adBanner.frame.size.height / 2)
adBanner.hidden = true
}
func bannerViewActionShouldBegin(banner: ADBannerView!, willLeaveApplication willLeave: Bool) -> Bool {
return true
}
func bannerView(banner: ADBannerView!, didFailToReceiveAdWithError error: NSError!) {
NSLog("error: \(error)")
}
func bannerViewWillLoadAd(banner: ADBannerView!) {
print("WILL LOAD BANNER")
}
func bannerViewDidLoadAd(banner: ADBannerView!) {
print("Loaded Ad \(banner)")
adBanner.hidden = false
}
override func viewWillAppear(animated: Bool) {
let helloScene = HelloScene(size: mainView.frame.size)
mainView.presentScene(helloScene)
mainView.addSubview(adBanner)
}
override func shouldAutorotate() -> Bool {
return false
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return UIInterfaceOrientationMask.AllButUpsideDown
} else {
return UIInterfaceOrientationMask.All
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
override func prefersStatusBarHidden() -> Bool {
return true
}
}
Am I missing something ? If I'll set controller's self.canDisplayBannerAds = true then banner is displayed properly at the bottom with the rest scaled as I would expect.
Is it because I'm using presentScene, which adds SKScene and not a view ?
UPDATE
I've tried adding constraints, but I guess there's a lot of reading ahead of me cause I couldn't yet figure that out :) I googled for a while and came up with this, but that didn't change anything so probably I'm doing it wrong (added that to viewDidLoad :
mainView.addSubview(adBanner)
let viewsDictionary = ["adBanner": adBanner]
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[adBanner]|", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: viewsDictionary))
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:[adBanner]|", options: NSLayoutFormatOptions.AlignAllBaseline, metrics: nil, views: viewsDictionary))

Answer 1

You can replace your complete code with
self.canDisplayBannerAds = true
Here is a short tutorial.