iOS 4中iAd的示例代码

import UIKit
import iAd

class ViewController: UIViewController, ADBannerViewDelegate {

    var adBannerView: ADBannerView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // 创建广告横幅视图
        adBannerView = ADBannerView(adType: .banner)
        adBannerView.delegate = self
        adBannerView.translatesAutoresizingMaskIntoConstraints = false
        adBannerView.isHidden = true
        view.addSubview(adBannerView)

        // 设置广告横幅视图的约束
        let views = ["adBannerView": adBannerView!]
        view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|[adBannerView]|", options: [], metrics: nil, views: views))
        view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[adBannerView]|", options: [], metrics: nil, views: views))
    }

    // 广告加载完成
    func bannerViewDidLoadAd(_ banner: ADBannerView!) {
        adBannerView.isHidden = false
    }

    // 广告加载失败
    func bannerView(_ banner: ADBannerView!, didFailToReceiveAdWithError error: Error!) {
        adBannerView.isHidden = true
    }

    // 广告被点击
    func bannerViewActionShouldBegin(_ banner: ADBannerView!, willLeaveApplication willLeave: Bool) -> Bool {
        return true
    }

    // 广告视图将要打开全屏
    func bannerViewWillPresentScreen(_ banner: ADBannerView!) {
        // 在这里处理广告视图打开全屏时的逻辑
    }

    // 广告视图将要关闭全屏
    func bannerViewWillDismissScreen(_ banner: ADBannerView!) {
        // 在这里处理广告视图关闭全屏时的逻辑
    }

    // 广告视图已经关闭全屏
    func bannerViewDidDismissScreen(_ banner: ADBannerView!) {
        // 在这里处理广告视图已关闭全屏时的逻辑
    }
}