android - R.java file is not generated in a library project

Question

I'm trying to use the SlidingMenu library. As described, I created a new Android project using the library directory, tried "Project > Clean" to generate the R.java but doesn't work.

The curious fact is that if I open the project properties and uncheck the "Is Library" all will work and R.java file is generated without errors. Besides the errors with the lack of R.java file, the tab "Problems" presents this:

Unparsed aapt error(s)! Check the console for output.

If I remove, as suggested in several responses, it appears again when I clean the project.

I appreciate any suggestion.

Answer 1

Un-checking and re-checking and "is library" helped for me.

Under Preferences > Android (for that lib project)