Google Ads 8.0 Interstitial SwiftUI

Question

在SwiftUI中使用谷歌MobileAdsSDK 8.0 (iOS)的例子似乎并不多。到目前为止，我有一个Interstitial类

import GoogleMobileAds
import UIKit
    
final class Interstitial:NSObject, GADFullScreenContentDelegate{
    var interstitial:GADInterstitialAd!
    
    override init() {
        super.init()
        LoadInterstitial()
    }
    
    func LoadInterstitial(){
        let req = GADRequest()
        GADInterstitialAd.load(withAdUnitID: "...", request: req) { ad, error in
            self.interstitial = ad
            self.interstitial.fullScreenContentDelegate = self
        }
        
    }
    
    func showAd(){
        if self.interstitial != nil {
            let root = UIApplication.shared.windows.first?.rootViewController
            self.interstitial.present(fromRootViewController: root!)
        }
    }
    
    
    func adDidDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
        LoadInterstitial()
    }
}

在我的SwiftUI视图中，我创建了一个局部变量Interstitial，当执行一个操作时，我调用showAd()函数，但是，当广告显示它时，它会立即停止showAd()调用之后的代码运行。因此，我认为我需要以某种方式调用showAd()，一旦广告被取消，然后在视图中执行剩余的代码。正如您在上面看到的，Interstitial类是委托，但是我如何“警告”我的SwiftUI视图广告被驳回，以便我可以执行其余的代码？下面是我的观点。

import SwiftUI

struct MyView: View {
    
    @Environment(\.managedObjectContext) var managedObjectContext

    var interstitial : Interstitial = Interstitial()

    
    var body: some View {
        VStack{
            //... Display content
        }
        .navigationBarItems(trailing:
            HStack{
                Button(action: actionSheet) {
                    Image(systemName: "square.and.arrow.up")
                }
                
            }
        )
    }
    
    func showAd(){
        interstitial.showAd()
    }
    
    func actionSheet() {
        showAd()
        let data = createPDF()
        let temporaryFolder = FileManager.default.temporaryDirectory
        let fileName = "export.pdf"
        let temporaryFileURL = temporaryFolder.appendingPathComponent(fileName)
        do {
            try data.write(to: temporaryFileURL)
            let av = UIActivityViewController(activityItems: [try URL(resolvingAliasFileAt: temporaryFileURL)], applicationActivities: nil)
            UIApplication.shared.windows.first?.rootViewController?.present(av, animated: true, completion: nil)

        } catch {
            print(error)
        }
    }
    
}

Answer 1

通过添加excaping闭包，您可以传递一个函数并执行所需的操作。

final class InterstitialAd: NSObject, GADFullScreenContentDelegate {
    var completion: () -> Void
    var interstitial: GADInterstitialAd!
    
    init(completion: @escaping () -> Void) {
        self.completion = completion
        
        super.init()
        
        LoadInterstitialAd()
    }
    
    func LoadInterstitialAd() {
        let req = GADRequest()
        GADInterstitialAd.load(withAdUnitID: Constants.AdmobIDs.saveImageBlockID, request: req) { ad, error in
            self.interstitial = ad
            self.interstitial.fullScreenContentDelegate = self
        }
        
    }
    
    func show() {
        if self.interstitial != nil {
            let root = UIApplication.shared.windows.first?.rootViewController
            self.interstitial.present(fromRootViewController: root!)
        }
    }
    
    
    func adDidDismissFullScreenContent(_ ad: GADFullScreenPresentingAd) {
        LoadInterstitialAd()
        completion()
    }
}