Cannot resolve symbol 'Theme' in styles.xml (Android Studio)

Question

Since today, Android Studio can\'t find the AppCompat themes in styles.xml, but for example AppCompatActivity in code does get recognized. My Android Studio version

Answer 1

EDIT: As @Alexey noted, bug still appears in Android Studio v3.1.4

This worked for me:

• Click File > Close Project
• Reopen the project from Studio's dialog.