我一直在尝试将adMob横幅广告集成到我的应用程序中，并且在我添加uinavigationcontroller之前一切正常。测试广告不再展示。Storyboard上仅有的ViewController是uiviewcontroller和导航ViewController。基于:https://developers.google.com/admob/ios/quick-start//ViewController.swiftoverridefuncviewDidLoad(){super.viewDidLoad()println("GoogleMobileAdsSDKversion:"+GADR