"Couldn't resolve resource" in Android Studio's Preview

Question

After adding new items in strings.xml, quite often they don't start working immediately in Android Studio's Preview.

Couldn't resolve resource @string/faq_customer_service

Preview looks like this:

I've obviously tried to re-build the project, and even run gradle clean assembleDebug, but it doesn't seem to help. On emulator & real device the newly-added string resources do work.

Any trick to force Android Studio to reload the resources so that the correct texts show up in Preview?

Answer 1

The only reliable way I've found so far is reloading the project / restarting Android Studio.

Quickest way to do that is File → Invalidate caches / Restart... → Just Restart.

Feel free to post better solutions!

Answer 2

you DO NOT need to close the entire project. It's just way too much for so little problem.

Just refresh the preview (click the "refresh" button)

provided from https://stackoverflow.com/a/34754707/3339597