iAd 横幅问题

Question

错误和问题：

警告：当前存在 10 多个 ADBannerView 或 ADInterstitialView 实例。这是对iAd API的滥用，广告性能将因此受到影响。此消息仅打印一次。

我对广告视图的实现：

var adView = ADBannerView()
override func viewDidLoad() {
    super.viewDidLoad() 
    adView.frame = CGRectOffset(adView.frame, 0, self.view.bounds.height - adView.bounds.height)
    adView.sizeToFit()
    self.view .addSubview(adView)
    adView.alpha = 0.001
    adView.delegate = self
    }

我在互联网上查看了一下，发现我需要实现"viewWillDisappear"，我这样做了：

我的第一次尝试：

override func viewWillDisappear(animated: Bool) {
    adView.removeFromSuperview()
    adView.delegate = nil
}

第二个：

override func viewWillDisappear(animated: Bool) {
    for view in self.view.subviews {
        view.removeFromSuperview()
    }
    adView.removeFromSuperview()
    adView.delegate = nil
}

还有一件事，它说它只会显示一次，但每次我在手机上运行该应用程序时都会收到错误

Answer 1

经过一番搜索，我得出了这个解决方案：

    let adView = ADBannerView()
override func viewDidLoad() {
    super.viewDidLoad()
adView.frame = CGRectOffset(adView.frame, 0, self.view.bounds.height - adView.bounds.height)
    adView.sizeToFit()
    adView.alpha = 0.001
    adView.delegate = self
    self.view .addSubview(adView)
    self.canDisplayBannerAds = true
    }

override func viewWillDisappear(animated: Bool) {
    for view in self.view.subviews {
        view.removeFromSuperview()
    }
    adView.hidden = true
    adView.delegate = nil
    adView.removeFromSuperview()
}

显然我错过了添加"self.canDisplayBannerAds = true"，这暂时解决了问题