Created a new Android project.
Added the library (https://github.com/johannilsson/android-actionbar) for instructions http://www.jetbrains.com/idea/webhelp/sharing-android-source-code-and-resources-using-library-projects.html.
In the code of the class Actionbar works.
BUT the problem – layout does not find com.markupartist.android.widget.ActionBar.
You need add it as a separate module instead of the library and in the
Android Facetsettings of this module enable “Is Library Project” option. Then add this module as a dependency to your main application.