Missing styles. Is the correct theme chosen for this layout?

Question

Missing styles. Is the correct theme chosen for this layout? Use the Theme combo box above the layout to choose a different layout, or fix the theme style ref

Answer 1

I got this error after overriding action bar style like this. Also i lost action bar in preview.

So, problem is overriding theme by my custom. this is the reason, why I've changed AppCompat (from "Project Themes") to general_app_theme (from "Manifest Themes"). Now I have no this error and action bar in preview come back.