为什么我有时无法加载广告？
我已通过以下文档在我的应用程序中实现了 AdMob：此处
我可以完美地看到我想要的广告。但有时我看不到广告。如果我刷新活动，它会再次向我显示广告。和 ita 工作完美。
但是，当我当时无法看到广告时，我在目录中收到如下消息：
09-27 12:58:54.451: INFO/Ads(940): onFailedToReceiveAd(Ad request successful, but no ad returned due to lack of ad inventory.)
我不知道问题出在哪里？ 为什么我有时看不到添加？ 如果我对此有错误的话，请给我指路。 谢谢。
I have implemented AdMob to My Application from this Docunemtation: Here
I can see the ad perfectly as I want. But some times I cant able to see the advertisements. If i refresh the activity, it will show me the Advertisement again. and ita work perfectly.
But when i am not able to see the advertisement at that time i got the message at catlog like:
09-27 12:58:54.451: INFO/Ads(940): onFailedToReceiveAd(Ad request successful, but no ad returned due to lack of ad inventory.)
I dont know where is the Problem ?
Why I am not able to see the Add sometimes ??
Please give the way if I am wrong regarding it.
Thanks.
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AdMob 广告根据网络流量以指定的时间间隔展示。如果流量不拥堵，则每次您看到应用程序时都会显示广告，否则您会在日志中看到消息说没有返回广告。但是，请快速浏览一下您的代码，并在给出一些间隙后继续测试您的应用程序。
关于刷新，在您的 AdMob 帐户中，转到设置，您可以在其中指定您希望广告刷新的时间。相同的广告仍有可能一次又一次出现。
为什么不使用最新的 Google AdSense-SDK？ Google AdSense 有很好的广告。
AdMob ads appear at a specified interval depending on the network traffic. If there is no congestion in the traffic, the ads appear each time you see your app else you see the message in your log saying no ad returned. However have a quick walkthrough with your code and keep testing your app after giving some gap.
With regard to refresh, in your AdMob account, go to setting, there you can specify the time when do you want the ads to refresh. There is still a possibility of the same ads appearing again and again.
Why dont you use the latest Google AdSense-SDK? Google AdSense has good ads.
我也遇到了这个问题，但是我们这边没有任何问题，Admob 有时不会出现，所以可能是 AdMob 端出现问题，比如服务器问题、网络问题...等
I was also faced this issue but There is no any issue at our end, Admob is not appear sometime so may be it is problem at AdMob end like as server problem, netproblem...etc
添加 AdSense 广告所需要做的就是在 admob.com 上的应用程序的应用程序设置中按下按钮启用 Google AdSense。
All that is needed to add AdSense ads is to press a button to enable Google AdSense in the App Settings in your app on admob.com.