Cannot resolve symbol '?attr/actionBarSize' after updating Android Studio from 2.3 to 3.0 for buildToolsVersion '26.0.2'

Question

After updating Android Studio from 2.3 to 3.0 I changed buildToolsVersion from 26.0.0 to 26.0.2 and after then I am getting this error:

Cannot reso         


        

Answer 1

Your buildToolsVersion version differs from version in dependencies (e.g. buildToolsVersion is 27.0.0 but implementation 'com.android.support:support-v4:27.0.1'). Make them the same.