i have same exactly problem with this peoplehttp://stackoverflow.com/questions/13395810/r-java-not-getting-generated-with-intellij-idea-12and i just realize that my r.java is empty when the image 24 show me that r.java is generating automaticallyis it okay to leave it empty?is there another way to solve this problem?i use intellij IDEA 12.1i see the bug tracker still no way out 
Update :i think that file is important, my string color won't change
Update :i think that file is important, my string color won't change