Android Studio Rendering Problems, classes could not be found

Question

I just updated the sdk. I've created a new layout XML with just a FrameLayout and a TextView. And I got a rendering problem:

The following classes could not be found: - android.support.v7.internal.widget.ActionBarOverlayLayout

I've tried, but none did work. how can I fix it?

Answer 1

There is a bug in the Android Gradle plugin that will be fixed for version 1.2.3. The bug is described here: http://tools.android.com/knownissues as well as two workarounds. Below is the one I used successfully:

Workaround 1: First manually build the project (Build > Rebuild project), then manually sync the project (using the Sync with Gradle files in the toolbar, or from the Tools > Android menu), then finally press Refresh in the toolbar above the layout editor.

Answer 2

Try to change the theme to something different than "AppTheme". I had the same problem and that's how I fixed it.

Answer 3

Simply rebuilding the project Build --> Rebuild Project solved for me

Answer 4

I changed the android version used to render layouts from 22 to 17 and it worked.