That said, it’s very easy to mix up the two when, for example, calling a Java function that returns a null value and assigning it to a non-nullable Kotlin field. Read more about this in our Handling Nullability in Your Code blog post.Īs long as you’re staying within Kotlin, null safety isn’t much of a problem, because the compiler doesn’t even let you compile if you mix up nullable and non-nullable types. For more insight into this topic, refer to the Kotlin documentation on null safety. The most important thing in the process is to be aware of nullable types, which you can assign both normal values and null values to. So this blog post will provide you with an overview of best practices for performing code conversion.

This gets a lot of the job done, but rest assured, you won’t get away without some manual labor. There’s a feature in Android Studio that helps a lot with this you can find it in the main menu under Code > Convert Java File to Kotlin File. Just open the class you want to convert and chos the option Code -> Convert Java File to Kotlin File.Īnd that’s all.Sooner or later, presumably every Android developer will run into the situation where they’ll want to convert Java code to Kotlin to take advantage of its powerful features. The Kotlin plugin includes a conversor from Java to Kotlin code (not the other way round, but you won’t want it anyway 😝). It will be easier to convert the code later. Nothing different from a regular project:Ĭhoose “Blank Screen” among the “New Activity” options.

Now that you’ve installed your plugin (you can even do it later if you want), create an Android Project. In order to do this, go to Plugins section in “Preferences”, and use the search bar to find it: IntelliJ comes with it already installed by default, but it’s not the same for Android Studio.

Canary or Beta should be OK, but new versions sometimes break the Kotlin plugin for some days. Creating an Android project for Kotlin from scratchįirst thing you need is to download the latest stable version of Android Studio.

Convert java to kotlin android studio