如何从应用代理中删除插页式广告 - 应用内购买

Question

我已经从应用代理实现了插页式广告，并且加载正常。现在我想将购买按钮删除，我很困惑。

这是我的代码：

class AppDelegate: UIResponder, UIApplicationDelegate, GADInterstitialDelegate {

var window: UIWindow?
var myInterstitial: GADInterstitial!


func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {


    // Override point for customization after application launch.

    myInterstitial = createAndLoadInterstitial()
    return true
}

func createAndLoadInterstitial()->GADInterstitial {
    let interstitial = GADInterstitial(adUnitID: "xxxxx")
    interstitial.delegate = self

    interstitial.loadRequest(GADRequest())
    return interstitial
}

func interstitialDidReceiveAd(ad: GADInterstitial!) {
    print("interstitialDidReceiveAd")
}

func interstitial(ad: GADInterstitial!, didFailToReceiveAdWithError error: GADRequestError!) {
    print(error.localizedDescription)
}

func interstitialDidDismissScreen(ad: GADInterstitial!) {
    print("interstitialDidDismissScreen")
    myInterstitial = createAndLoadInterstitial()
}

和视图控制器：

let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

override func viewWillAppear(animated: Bool) {


    appDelegate.myInterstitial?.presentFromRootViewController(self)

}

Answer 1

好的，所以真正的问题是 - 如何在购买时删除广告（来自 cmets）。

这可以很简单地实现 - 在您收到购买成功的确认后，您应该做两件事：

• 在NSUserDefaults 中设置一个标志，以便您在后续应用启动时了解这一点
• 将myInterstitial 设置为nil，以便在此会话期间不再展示广告

用代码示例总结一下：

func paymentComplete() {
    NSUserDefaults.standardUserDefaults().setBool(true, forKey: "userAlreadyPaid")
    appDelegate.myInterstitial = nil
}

并将您的 didFinishLaunchingWithOptions 方法更新为如下内容：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    // Override point for customization after application launch.
    let userAlreadyPaid = NSUserDefauls.standardUserDefaults().boolForKey("userAlreadyPaid")

    if !userAlreadyPaid {
        myInterstitial = createAndLoadInterstitial()
    }
    return true
}

要了解如何实现应用内购买，您可以参考官方文档：https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/StoreKitGuide/Introduction.html