Display interstitial ad on Apple

Display an interstitial ad

Swift

let interstitialAd = AdropInterstitialAd(unitId: "PUBLIC_TEST_UNIT_ID_INTERSTITIAL")
interstitialAd.delegate = self
interstitialAd.load()

...

// call show function when the ad needs to be displayed.
interstitialAd.show()

Objective-C

self.interstitialAd = [[AdropInterstitialAd alloc] initWithUnitId:@"PUBLIC_TEST_UNIT_ID_INTERSTITIAL"];
self.interstitialAd.delegate = self;
[self.interstitialAd load];

...

// call show function when the ad needs to be displayed.
[self.interstitialAd showFromRootViewController:self];

SwiftUI

class AdropInterstitialAdWrapper: AdropInterstitialAdDelegate {
    var interstitialAd: AdropInterstitialAd?
    var errorHandler: (String) -> Void
        
    init(_ unitId: String, handler: @escaping (_ error: String) -> Void) {
        self.interstitialAd = AdropInterstitialAd(unitId: unitId)
        self.errorHandler = handler
        interstitialAd?.delegate = self
    }
    
    func onAdReceived(_ ad: AdropAds.AdropInterstitialAd) {
        print("onAdReceived")
    }
    
    func onAdFailedToReceive(_ ad: AdropAds.AdropInterstitialAd, _ error: AdropAds.AdropErrorCode) {
        print("onAdFailedToReceive \(AdropErrorCodeToString(code: error))")
        self.errorHandler(AdropErrorCodeToString(code: error))
    }
    
    func load() {
        interstitialAd?.delegate = self
        interstitialAd?.load()
    }
    func show(fromRootViewController: UIViewController) {
        interstitialAd?.show(fromRootViewController: fromRootViewController)
    }
}

struct InterstitialAdView: View {
    @State var adropInterstitialAdWrapper :AdropInterstitialAdWrapper? = nil
    
    var body: some View {
        NavigationView {
            VStack {
                Button {
                    adropInterstitialAdWrapper = AdropInterstitialAdWrapper("PUBLIC_TEST_UNIT_ID_INTERSTITIAL") { _ in }
                    adropInterstitialAdWrapper?.load()
                } label: {
                    Text("load")
                }
                .padding(.all)
                
                Button {
                    adropInterstitialAdWrapper?.show(fromRootViewController: (UIApplication.shared.windows.first?.rootViewController)!)
                } label: {
                    Text("show")
                }
                .padding(.all)
                Spacer()
           
            }
            .navigationTitle("InterstitialAd Example")
        }
    }
}