我已经使用Android支持库和Android支持库更新了SDK管理器。

如果您查看该图片，您会注意到您使用的是Android支持信息库的第14版。请将Android支持库更新至最新版本。这应该允许您添加的 22.2.0 程序兼容性-V7 。

I imported project from Github and there's error:

I have already update SDK manager with Android Support Respository and Android Support Library:

I have already update SDK manager with Android Support Respository and Android Support Library

If you look at that picture, you will notice that you are on version 14 of the Android Support Repository. Please update the Android Support Repository to the latest version. That should allow you to add 22.2.0 of appcompat-v7.