Android Studio出现The selected directory is not a valid home for android

今天电脑出问题了，在选择SDK的时候只能选择5.0的SDK，但是明明/sdk/platforms下有14的SDK，但是一选择就会出现如下图所示错误

错误提示

后来在StackOverFlow上查原因，原贴链接为：
http://stackoverflow.com/questions/16606301/android-studio-selected-directory-is-not-valid-home-for-android-sdk

I was trying to select
C:\Program Files (x86)\Android\android-sdk\platforms\android-XX

But what I actually had to do was to select android-sdk
folder.
C:\Program Files (x86)\Android\android-sdk

Then I was able to choose the API I wanted from a list of APIs that would show up.

最后也就是在导入的时候不选择/sdk/platform/具体的某个版本，而是选择整个android-sdk目录就可以了。

选择整个SDK目录

就可以在Project配置中看到选择的版本配置了。