如何在swiftui中使用mopub横幅

import SwiftUI
import MoPubSDK

struct MoPubBannerView: UIViewRepresentable {
    func makeUIView(context: Context) -> MPAdView {
        let adView = MPAdView(adUnitId: "YOUR_AD_UNIT_ID")
        adView.delegate = context.coordinator
        adView.loadAd()
        return adView
    }
    
    func updateUIView(_ uiView: MPAdView, context: Context) {
        // 更新视图
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator()
    }
    
    class Coordinator: NSObject, MPAdViewDelegate {
        // 处理广告事件和回调
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            // 其他内容
            MoPubBannerView()
                .frame(height: 50)
        }
    }
}