swift - 如何添加横幅广告添加到弹出 View swift 4

Question

当横幅广告进入弹出 View 时应用程序崩溃

Terminating app due to uncaught exception 'NSGenericException', reason: 'Unable to install constraint on view. Does the constraint reference something from outside the subtree of the view? That's illegal. constraint:

viewads.addConstraints(
            [NSLayoutConstraint(item: bannerView,
                                attribute: .bottom,
                                relatedBy: .equal,
                                toItem: bottomLayoutGuide,
                                attribute: .top,
                                multiplier: 1,
                                constant: 0),
             NSLayoutConstraint(item: bannerView,
                                attribute: .centerX,
                                relatedBy: .equal,
                                toItem: view,
                                attribute: .centerX,
                                multiplier: 1,
                                constant: 0)
            ])   popview.addSubview(bannerView)

横幅添加到弹出 View

Answer 1

以下是我如何成功地将横幅添加到我的应用程序:

<强>1。将其添加到您的 ViewDidLoad

            bannerView = GADBannerView(adSize: kGADAdSizeSmartBannerPortrait)
            addBannerViewToView(bannerView)
            bannerView.delegate = self
            bannerView.adUnitID = "ca-app-pub-3940256099942544/2934735716" //This is the test ID, always use this to test your app.

            bannerView.rootViewController = self
            bannerView.load(GADRequest())

<强>2。添加这些功能，你可以在google AdMob网站上找到它们，我个人建议全部添加，在添加它们之前我的代码不起作用

func addBannerViewToView(_ bannerView: GADBannerView) {
        bannerView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(bannerView)
        if #available(iOS 11.0, *) {
            // In iOS 11, we need to constrain the view to the safe area.
            positionBannerViewFullWidthAtBottomOfSafeArea(bannerView)
        }
        else {
            // In lower iOS versions, safe area is not available so we use
            // bottom layout guide and view edges.
            positionBannerViewFullWidthAtBottomOfView(bannerView)
        }
    }

    // MARK: - view positioning
    @available (iOS 11, *)
    func positionBannerViewFullWidthAtBottomOfSafeArea(_ bannerView: UIView) {
        // Position the banner. Stick it to the bottom of the Safe Area.
        // Make it constrained to the edges of the safe area.
        let guide = view.safeAreaLayoutGuide
        NSLayoutConstraint.activate([
            guide.leftAnchor.constraint(equalTo: bannerView.leftAnchor),
            guide.rightAnchor.constraint(equalTo: bannerView.rightAnchor),
            guide.bottomAnchor.constraint(equalTo: bannerView.bottomAnchor)
            ])
    }

    func positionBannerViewFullWidthAtBottomOfView(_ bannerView: UIView) {
        view.addConstraint(NSLayoutConstraint(item: bannerView,
                                              attribute: .leading,
                                              relatedBy: .equal,
                                              toItem: view,
                                              attribute: .leading,
                                              multiplier: 1,
                                              constant: 0))
        view.addConstraint(NSLayoutConstraint(item: bannerView,
                                              attribute: .trailing,
                                              relatedBy: .equal,
                                              toItem: view,
                                              attribute: .trailing,
                                              multiplier: 1,
                                              constant: 0))
        view.addConstraint(NSLayoutConstraint(item: bannerView,
                                              attribute: .bottom,
                                              relatedBy: .equal,
                                              toItem: bottomLayoutGuide,
                                              attribute: .top,
                                              multiplier: 1,
                                              constant: 0))
    }


    /// Tells the delegate an ad request loaded an ad.
    func adViewDidReceiveAd(_ bannerView: GADBannerView) {
        print("adViewDidReceiveAd")
        addBannerViewToView(bannerView)
        bannerView.alpha = 0
        UIView.animate(withDuration: 1, animations: {
            bannerView.alpha = 1
        })
    }

    /// Tells the delegate an ad request failed.
    func adView(_ bannerView: GADBannerView,
                didFailToReceiveAdWithError error: GADRequestError) {
        print("adView:didFailToReceiveAdWithError: \(error.localizedDescription)")
    }

    /// Tells the delegate that a full-screen view will be presented in response
    /// to the user clicking on an ad.
    func adViewWillPresentScreen(_ bannerView: GADBannerView) {
        print("adViewWillPresentScreen")
    }

    /// Tells the delegate that the full-screen view will be dismissed.
    func adViewWillDismissScreen(_ bannerView: GADBannerView) {
        print("adViewWillDismissScreen")
    }

    /// Tells the delegate that the full-screen view has been dismissed.
    func adViewDidDismissScreen(_ bannerView: GADBannerView) {
        print("adViewDidDismissScreen")
    }

    /// Tells the delegate that a user click will open another app (such as
    /// the App Store), backgrounding the current app.
    func adViewWillLeaveApplication(_ bannerView: GADBannerView) {
        print("adViewWillLeaveApplication")
    }

不要忘记在您的类中设置 GADBannerViewDelegate。