Couldn't resolve resource @style/Widget.Holo.Light.ActionMode.Inverse

Question

I\'m creating an Android app in Android Studio. When I open the layout editor, I see that gray \"popup window\" on top of the layout, which says that it

Answer 1

This problem occured to me when updating Android Studio to version 1.1.0 and opening an old project without changing anything.

For me only changing the preview's rendering API to 19 or above makes the message disappear.