在Android中，error“；找不到com.android.support:support-v4:22.2.20；同时将AdMob集成到我的应用程序中

我想将AdMob集成到我的应用程序中。如果我在依赖项中添加以下行

compile 'com.google.android.gms:play-services-ads:8.3.0'

然后我得到以下错误：

Error:A problem occurred configuring project ':app'.
 Could not resolve all dependencies for configuration ':app:_debugCompile'.
    Could not find com.android.support:support-v4:22.2.0.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
     Required by:
         AncientGame:app:unspecified  com.android.support:appcompat-v7:22.0.0
         AncientGame:app:unspecified  com.google.android.gms:play-services:7.5.0  com.google.android.gms:play-services-base:7.5.0
    Could not find com.android.support:support-v4:22.2.0.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
     Required by:
         AncientGame:app:unspecified  AncientGame:BaseGameUtils:unspecified
    Could not find com.android.support:support-v4:22.2.0.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         https://jcenter.bintray.com/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.pom
         file:/C:/Users/narayan/AppData/Local/Android/sdk/extras/google/m2repository/com/android/support/support-v4/22.2.0/support-v4-22.2.0.aar
     Required by:
         AncientGame:app:unspecified  com.google.android.gms:play-services-ads:8.3.0  com.google.android.gms:play-services-basement:8.3.0

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我怎样才能解决这个问题。请帮帮我

您收到该错误是因为您的

Android支持存储库未更新

要解决这个问题：


开放式SDK管理器
选择
Extras>Android支持存储库
按
安装软件包…