title: Android Studio: View who is visible only in preview
body: <p>I have a simple question. I'm making application in Android Studio and I have got a problem. My application is creating buttons using Java. I want see these buttons in Preview editor, because I want have easier posibility to editing layout. So I made the same buttons in XML, but here is the problem. When I build my app it is showing both buttons! I want see only the buttons creating by Java code and finally here is my question it is possible remove buttons created in XML? I was thinking about tools:.. but I didn't find any usefull tag. Someone have any idea?</p>