AdMob 插页式错误“请求错误：没有广告可展示”

Question

我正在使用 Swift2 和 Xcode7 开发一个 iOS 应用程序。我正在尝试实施 AdMob，但它不显示我的插页式广告。

override func viewDidLoad() {
    super.viewDidLoad()

    _interstitial = createAndLoadInterstitial()
}

func createAndLoadInterstitial()->GADInterstitial {
    let interstitial = GADInterstitial(adUnitID: "interstitial_ID")
    let gadRequest:GADRequest = GADRequest()
    gadRequest.testDevices = ["test device id"]
    interstitial.delegate = self
    interstitial?.loadRequest(gadRequest)

    return interstitial!
}

func interstitialDidReceiveAd(ad: GADInterstitial!) {
    _interstitial?.presentFromRootViewController(self)
}

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

func interstitialDidDismissScreen(ad: GADInterstitial!) {
    _interstitial = createAndLoadInterstitial()
}

我收到此错误：

请求错误：没有广告可展示。

Answer 1

Request Error: No ad to show.

表示您的请求已成功，但 Admob 目前没有可在您的设备上展示的广告。确保您始终有广告展示的最佳方法是使用中介，以便将未完成的请求传递到另一个广告网络。 Admob 提供了很好的机制来做到这一点。

Answer 2

您应该有两个广告单元 ID。一份给你的GADBannerView，一份给你的GADInterstitial。确保 AdMob 为您的插页式广告提供的广告单元 ID 完全与他们提供的相同。更新到latest AdMob SDK，当前为 7.5.0。还可以考虑在特定时间间隔或在用户完成所需操作后调用presentFromRootViewController(self)。您现在的设置方式将继续展示一个又一个的插页式广告，因为每次关闭一个插页式广告时您都会发送对新插页式广告的请求，然后在收到广告后立即显示该插页式广告。

import UIKit
import GoogleMobileAds

class ViewController: UIViewController, GADInterstitialDelegate {

    var myInterstitial : GADInterstitial?

    override func viewDidLoad() {
        super.viewDidLoad()
        myInterstitial = createAndLoadInterstitial()
    }

    func createAndLoadInterstitial()->GADInterstitial {
        let interstitial = GADInterstitial(adUnitID: "Your Ad Unit ID")
        interstitial.delegate = self
        interstitial?.loadRequest(GADRequest())
        return interstitial
    }

    @IBAction func someButton(sender: AnyObject) {
        myInterstitial?.presentFromRootViewController(self)
    }

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

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

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