Swift: Remove ads different scene in Spritekit

Question

I'm using the MoPub banner ad, I added the following code to my View Controller's viewDidLoad:

     self.adView.delegate = self
    self.adView.frame = CGRectMake(0, self.view.bounds.size.height - MOPUB_BANNER_SIZE.height,
        MOPUB_BANNER_SIZE.width, MOPUB_BANNER_SIZE.height)
    self.view.addSubview(self.adView)
    self.adView.loadAd()

But it makes the ad visible in all the scenes when I only want it to be visible in the main menu scene.

How do I remove the ad in the scenes that I don't want it to be?

Answer 1

This might not be the best way to do this, but it is probably the simplest. You could use an NSNotification to broadcast a message to your ViewController whenever you wish to show or hide you banner.

For instance if you add an "observer" in your ViewController on init or viewDidLoad:

NSNotificationCenter.defaultCenter().addObserver(
  self, 
  selector: "hideBannerAd", 
  name: "hideAd", 
  object: nil)

To make the ViewController listen for a message called "hideAd" and then execute a method called hideBannerAd.

Then implement this method:

func hideBannerAd(){
  self.adView.hidden = true
}

Be sure to remove the observer on deinit, this isn't likely to be an issue what with the persistance of a ViewController in SpriteKit but it's good practice.

deinit{
  NSNotificationCenter.defaultCenter().removeObserver(self)
}

Then, when you want to show or hide the view, for example on a scene transition or game over method, you can implement this hideBannerAd method by triggering the observer using:

NSNotificationCenter.defaultCenter().postNotificationName("hideAd", object: nil)

And the banner should hide. This can then be repeated for a similar showBannerAd method by setting the hidden property to false, or you can have a single method that simply toggles the hidden property using adView.hidden = !adView.hidden.

I hope this helps.