After change some resources (Images) manually my R.java file has disappeared. I've tried all, I've read this, this, and a lot of entries, but nothing works for me. I have revised all my Layouts and resources, but apparently any layout hasn't problems. Is possible to export all my project and build another? Or without the R.java class I've nothing to do? thanks a lot!
I've solved it! I deleted the last files added and I restarted eclipsed, right now all is working correctly