Note that I’m using Kotlin Android Extensions to import references to the Button and TextView UI elements into the Kotlin source file, which is why there’s no findViewByIds in the above code.

Today, Android Studio ships with Kotlin support built-in, so creating an Android project that understands Kotlin code is as easy as selecting a checkbox in Android Studio’s project creation wizard.

Many Google teams have also been on a similar journey from Java to Kotlin for both Android and the server-side, culminating in over 11m lines of Kotlin code (as of October 2022).

Kotlin's primary sponsor is JetBrains, the company behind tools like IntelliJ. It's 100 percent interoperable with Java, which until now was Google's only primary language for writing Android apps.

Kotlin Samples: A large collection of samples demonstrating various uses for Kotlin. Get Started with Kotlin on Android: An introductory site designed to help you learn the basics of getting ...

It was only two years ago, at I/O 2017, that Google announced support for Kotlin in its Android Studio IDE.That came as a bit of a surprise, given that Java had long been the preferred language ...

Kotlin offers big advantages over Java for JVM and Android development, and plays nicely with Java in the same projects. Kotlin is a general purpose, free, open source, statically typed ...

Get Started with Kotlin on Android (Google's Android Developers site) Kotlin and Android (Google's Android Developers site) How to use Kotlin in Android Studio (Medium blog post). Setup Android Studio ...