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

I also faced the problem with Android Studio 3.1 , syncing does not help me.

Then I switched back to

`'com.android.support:design:27.1.0'` from : `'com.android.support:design:27.1.1'`

and added android.enableBuildCache=false to gradle.properties to disable build cache