有人知道如何以编程方式显示50pt高度的GADBannerView吗?在我看来DidLoad,intheightOfBanner=50;GADBannerView*banner=[[GADBannerViewalloc]initWithAdSize:GADAdSizeFullWidthPortraitWithHeight(heightOfBanner)origin:CGPointMake(0,CGSizeFromGADAdSize(kGADAdSizeBanner).height)];banner.adUnitID=@"ca-app-pub-xxxxxxxxxxxxxxxxxxxxxx