已更新为iOS4.1，iAd的“测试广告"没有出现在模拟器上

我按照教程中的说明添加了iAd，在我的应用中，它始终称为didFailToReceiveAdWithError. bannerViewDidLoadAd永远不会被调用.我知道我应该看到一个测试广告"广告，但是什么都没有显示，因为功能bannerViewDidLoadAd从未被调用.

I added the iAd as written in tutorials and in my app it always calls didFailToReceiveAdWithError. bannerViewDidLoadAd is never invoked. I know I'm supposed to see a "test advertisment" Ad, but nothing shows up, because the function bannerViewDidLoadAd is never being invoked.

我研究了其他问题，但没有找到答案... 本来应该添加代码，但是我怀疑这更多是我和史蒂夫之间的误会.

I've looked into other questions, but didn't find an answer... I would have added code, but I suspect this is more of a misunderstanding between me and Steve.

谢谢.

更新:

有人可以让我知道这个问题是否还在控制台中显示出来:

Can someone please let me know if this problem also shows him in the console:

未处理的错误(没有委托或委托未实现didFailToReceiveAdWithError :):错误Domain = ADErrorDomain代码= 5操作无法完成.横幅视图可见但不包含内容" UserInfo = 0xfdd4070 {ADInternalErrorCode = 5 ，NSLocalizedFailureReason =横幅视图可见，但没有内容}

Unhandled error (no delegate or delegate does not implement didFailToReceiveAdWithError:): Error Domain=ADErrorDomain Code=5 "The operation couldn’t be completed. Banner view is visible but does not have content" UserInfo=0xfdd4070 {ADInternalErrorCode=5, NSLocalizedFailureReason=Banner view is visible but does not have content}