package com.facebook does not exist, Facebook Android SDK, IntelliJ Idea

Question

I am trying to write an Android app that uses the Android SDK. I am using IntelliJ Idea 12 CE. I have done this before successfully, but I can't figure out what I did wrong this time. I did the following:

1. I downloaded the Facebook Android SDK from Facebook's developers website and imported that module into IntelliJ, which added it as a library
2. I added the imported library module to my project as a dependency

After that I had no problems writing the code, IntelliJ recognized the imports and everything seemed to work fine. When I tried to compile the code, it gave me the following error for every import statement from com.facebook I had:

...package com.facebook does not exist

These are some screenshots I took of the configuration:

Facebook lib

My app's config

Answer 1

右键单击新添加的模块下的java子目录，然后选择Mark Directory As ，然后选择Sources Root ，可能需要重建项目。