If you're asking about copying the contents of files, you don't need to copy the entire content. You can have a default strings.xml file with common strings that apply to all flavors. This file should be placed in the main/res/values/ folder. For flavor-specific strings, create additional strings.xml files and place them in folders named after the specific flavor and resource qualifier. If you're asking for a shortcut to copy files from one flavor to another, you can write a Gradle script for that.