title: Java Android Eclipse: R Classes disappear
body: <p>I've got a strange problem with R Classes in Java Eclipse (There are two R Classes, one in com.nameProject e one in android.support-v7). Well, when I add an ImageButton to my project, apperently everything is alrigt, my project doesn't take over any errors. But when I export my project (I create APK), <strong>R Classes disappear from my project ON THEIR OWN</strong>! So, the exporting fails and my project hasn't got anymore R Classes and it is incorrect...How can I resolve this problem? </p>