The Google document “Creating and Running a Wear-Resistant Application” ( https://developer.android.com/training/wearables/apps/creating.html ) discussed only how to create a project from scratch. Say, if you already have an Android Studio project for a phone / tablet (imported from Eclipse), how to add a watch module for Android Wear?
Right-click your project, open the module settings, click the + sign, which will lead you to a wizard to which you can add a wear module
Android Studio 3.0 → (F4) (Ctrl + Alt + Shift + S). +. , .