“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 res

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!