Iphone iAd“；活动横幅过多，将限制新横幅的创建。”；警告

我已经在视图上创建和删除了ADBannerView，视图将分别显示和消失，尽管在切换到另一个未创建ADBannerView的视图后，我仍然看到大量警告。这是什么意思？我怎样才能修好它

"Too many active banners, Creation of new banners will be throttled."

试试这个

-(void)viewDidLoad
{
    [super viewDidLoad];
    adView = [[AdBannerView alloc]initWithFrame:GCResctMake(0,0,320,50)];
    adView.requiredContentSizeIdentifiers = [NSSet setWithObject:ADBannerContentSizeIdentifier320x50];
    adView.currentContentSizeIdentifier = ADBannerContentSizeIdentifier320x50;
    adView.delegate=self;
    bannerIsVisible=NO;
    adView.hidden = YES;
    [adContainerView addSubview:adView];
    [adView release];
}

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