In-App Purchase : Remove Ad Banners & Interstitial Ads - Code Assistance

Question

I have a simple single view application project - a one (1) page app that displays some random text to the user.

I have successfully incorporated Ad Banners and Interstitial Ads.

I have set up another view controller (InAppViewController.swift) to handle a pop-up page that allows the user to make an in-app purchase to remove all ads (AdBanners & InterstitialAds).

In my second view controller (InAppViewController.swift), I have the following code:

AMENDED CODE:

//  InAppPViewController.swift

import UIKit
import StoreKit
import iAd

class InAppPViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {

let defaults = NSUserDefaults.standardUserDefaults()
var product_id: NSString?;


@IBOutlet weak var unlockAction: UIButton!

@IBOutlet var adBannerView: ADBannerView?

override func viewDidLoad() {
    
    product_id = "holymoly.iap.removeads";
    super.viewDidLoad()

    SKPaymentQueue.defaultQueue().addTransactionObserver(self)
    
    //Check if product is purchased

    if (defaults.boolForKey("purchased")){
        self.adBannerView?.hidden = true  
    }

    else if (!defaults.boolForKey("stonerPurchased")){
        print("false")
        self.adBannerView?.hidden = false    
    } 
}
   

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func unlockAction(sender: AnyObject) {
    
    print("About to fetch the products");
    // We check that we are allow to make the purchase.
    
    if (SKPaymentQueue.canMakePayments())
    {
        let productID:NSSet = NSSet(object: self.product_id!);
        let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>);
        productsRequest.delegate = self;
        productsRequest.start();
        print("Fething Products");
    }else{
        print("can't make purchases");
    }  
}

func buyProduct(product: SKProduct){
    print("Sending the Payment Request to Apple");
    let payment = SKPayment(product: product)
    SKPaymentQueue.defaultQueue().addPayment(payment);
}

//Delegate Methods for IAP

func productsRequest (request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) {
    
    let count : Int = response.products.count
    if (count>0) {

        let validProduct: SKProduct = response.products[0] as SKProduct
        if (validProduct.productIdentifier == self.product_id) {
            print(validProduct.localizedTitle)
            print(validProduct.localizedDescription)
            print(validProduct.price)
            buyProduct(validProduct);
        } else {
            print(validProduct.productIdentifier)
        }
    } else {
        print("nothing")
    }
}


func request(request: SKRequest, didFailWithError error: NSError) {
    print("Error Fetching product information");
}

func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction])   {
    print("Received Payment Transaction Response from Apple");
    
    for transaction:AnyObject in transactions {
        if let trans:SKPaymentTransaction = transaction as? SKPaymentTransaction{
            switch trans.transactionState {
                
            case .Purchased:
                print("Product Purchased");
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction)
                defaults.setBool(true , forKey: "purchased")
                self.adBannerView?.hidden = true
                break;
                
            case .Failed:
                print("Purchased Failed");
                SKPaymentQueue.defaultQueue().finishTransaction(transaction as! SKPaymentTransaction)
                self.adBannerView?.hidden = false
                break;
                
            case .Restored:
                print("Already Purchased");
                SKPaymentQueue.defaultQueue().restoreCompletedTransactions() 
                
                
            default:
                self.adBannerView?.hidden = true
                break;
            }
        }
    }
    
}

}

And in my 'original' view controller (ViewController.swift) I have added this code:

//  ViewController.swift
import UIKit
import MessageUI
import Social
import iAd

class ViewController: UIViewController, MFMailComposeViewControllerDelegate,     MFMessageComposeViewControllerDelegate, ADBannerViewDelegate,  ADInterstitialAdDelegate
{ 

var interstitialAd:ADInterstitialAd!
var interstitialAdView: UIView = UIView()

@IBOutlet var adBannerView: ADBannerView?

@IBAction func someFunkyButton(sender: AnyObject) {
  
    //Interstitial Ad:
    
    let rand = Int(arc4random_uniform(4))
    print(rand)
    let adNo = 2
    
    if(adNo == rand)
    {
        loadInterstitialAd()
        
    }
}

let defaults = NSUserDefaults.standardUserDefaults()

override func viewDidLoad() {
super.viewDidLoad()
    
    //Check if product is purchased
   
if (defaults.boolForKey("purchased")){

        // Advertising Banner:
        self.canDisplayBannerAds = true
        self.adBannerView?.delegate = self
        self.adBannerView?.hidden = true
        
    }
    else if (!defaults.boolForKey("stonerPurchased")){
        print("false")
        
        // Advertising Banner:
        self.canDisplayBannerAds = true
        self.adBannerView?.delegate = self
        self.adBannerView?.hidden = false     
    }
    

The code shows as error-free.

It runs on my actual iPhone (simulator) and the in-app purchases work.

But the ad banners still show. I'm trying to show the ad banners with:

(i) In ViewController.swift:

        self.canDisplayBannerAds = true
        self.adBannerView?.delegate = self
        self.adBannerView?.hidden = false

(ii) In InAppViewController.swift:

        self.adBannerView?.hidden = false

and not show the ad banners with:

(i) In ViewController.swift:

        self.canDisplayBannerAds = true
        self.adBannerView?.delegate = self
        self.adBannerView?.hidden = true

(ii) In InAppViewController.swift:

        self.adBannerView?.hidden = true

but it's obviously not working.

Questions:

1. How can I amend my code and stop these ad banners from showing?

2. How can I also stop my interstitial ads from showing?

   I feel I'm close, very close ... but that cigar is yet to land!

Answer 1

If you're implementing your own ADBannerView then you need to remove self.canDisplayBannerAds = true.

self.canDisplayBannerAds = true can be used for a no hassle way of implementing iAd banners in your application. This will create an ADBannerView for you and show or hide the ADBannerView on the bottom of your view depending on whether it receives an ad or not from the iAd network.

You either implement your own ADBannerView or use self.canDisplayBannerAds = true, not both.

Answer 2

First of all removeAds is inside btnRemoveAds so move it outside. Secondly, one approach would be to save the product identifiers of the purchased products in UserDefaults so that on quit and launch of the app the ads will not appear since the user has purchased the inapp. So what you will do on viewDidLoad is check if the product identifier is purchased (from NSUserDefaults, if it was purchased earlier it will be set), if it is purchased disable ads from the beginning else show ads. And when item is purchased then set the state in NSUserDefaults and update UI accordingly.