Want to hit the ground running? Check out our Kotlin samples ! Kotlin is fully supported in Android Studio 3.0 , so it's easy to create new projects with Kotlin files, add Kotlin files to your existing project, and convert Java language code to Kotlin. You can then use of all Android Studio's existing tools with your Kotlin code, such as autocomplete, lint checker, refactoring, debugging, and more. Create a new project with Kotlin Using Kotlin with a new project requires just one extra click in the New Project wizard: In Android Studio, click File > New > New Project . Or if you've just opened Android Studio and see the Welcome to Android Studio window, click Start a new Android Studio project . On the first screen, check Include Kotlin support . That's the only difference. Click Next and continue through the wizard until you're done. When you select an activity template, it will be provided in Kotlin code. ...