I'm new to Android, and new to IDEA 12, but I've been an IDEA user for many years.
I used the File -> New Project to create an Android 4.2 project, and following along with Pro Android 4 book, started adding resources. The book (and the 'net in general) implies that when resources are added, the "R.java" file should be updated to show those references.
But the R.java I have never gets values. I can auto-complete using R.xxx and see my resources, but the R.java never updates.
Is this a bug or just how things go with IDEA 12?