One problem, of course, is that Android Studio was not built from scratch; it’s based on the long-in-the-tooth IntelliJ IDEA platform, a Java IDE… and, well, you can tell.

Here's what Meta's developers have learned from moving their code base from the Java programming language over to Kotlin.

Android Studio is a developer kit that you can use to create and troubleshoot your own Android apps. We'll go over what it is (and what it isn't).