我无法使用Android Studio预览某些布局

Question

I have some troubles with my Android Studio IDE, the problem is that I can't preview some of my layouts inside the design mode or the preview window. the strange thing is that there is no "API version Editor" in the list :

I tried Clean/build my project, Invalidate and restart the IDE but the problem stills there .

Have you ever get this issus with Android Studio ? My Android Studio infos :

Regards

Answer 1

Just press "Sync Project with gradle" and voila! your layout preview is right there... Sync icon is present in the toolbar

or Go to FILE Menu -> Sync Projects with Gradle files.