question: @ Override public boolean shouldUseFullyQualifiedName ( @ NotNull PsiFile targetFile , @ NotNull String classQualifiedName ) { if ( classQualifiedName . equals ( CLASS_R ) || classQualifiedName . startsWith ( CLASS_R_PREFIX ) ) { return true ; } int index = classQualifiedName . lastIndexOf ( '.' ) ; if ( index == classQualifiedName . length ( ) - 2 && classQualifiedName . charAt ( index + 1 ) == 'R' ) { String pkg = getApplicationPackage ( targetFile ) ; if ( pkg != null ) { return ! isResourceClassReference ( classQualifiedName , pkg + ".R" ) ; } } else if ( index > 2 && classQualifiedName . charAt ( index - 1 ) == 'R' && classQualifiedName . charAt ( index - 2 ) == '.' ) { return classQualifiedName . startsWith ( CLASS_R ) || ResourceType . getEnum ( classQualifiedName . substring ( index + 1 ) ) != null ; } return false ; }
target:  Never import android.R, or inner classes of application R or android.R classes 