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What's new in Kotlin on Android, 2 years in (Google I/O'19)

Android Developers

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  • Recommended by 2 people: 2 in engineering communities.
  • A classic. People kept recommending it from 2019 to 2025.
  • Presented by Jeffrey van Gogh and Hadi Hariri
  • Made by the vendor. The company whose product it covers made or sponsored it.
  • May be out of date. The tools, versions or practices it shows have likely moved on.

Intermediate. Assumes working knowledge.

46K views7 years ago2 recommendations

Mobile developmentProgramming languagesKotlinAndroid and Jetpack ComposeCompilers and interpreters

Jeffrey van Gogh and Hadi Hariri discuss Kotlin support on Android, compiler optimizations, and Java interoperability.

This session examines the progress made in Android support for Kotlin. This talk will cover Kotlin samples and reference docs, annotations, framework APIs, IDE support for low-level bytecode optimizations in the D8/R8 compiler, and work on the Kotlin Foundation. Watch more #io19 here: Android & Play at Google I/O 2019 Playlist → goo.gle/2GRWlQh Google I/O 2019 All Sessions Playlist → goo.gle/io19allsessions Learn more on the I/O Website → google.com/io Subscribe to the Android Developers Channel → goo.gle/AndroidDevs Get started at → developer.android.com/ Speaker(s): Jeffrey van Gogh and Hadi Hariri T84F9D event: Google I/O 2019; re_ty: Publish; product: Android - Languages; fullname: Jeffrey Van Gogh;

Why it's here

2 people recommend this

What people say. Engineers point to this talk to show that rewriting legacy Java code in Kotlin is not immediately necessary.

Moments people linked to

u/sigma36in r/Kotlin • Recommends

On “What are your thoughts on mixing Kotlin with an existing Java legacy project?”

…e're about 10% Kotlin of the Android Studio specific code. And so what we do is we only take new functionality, write that in Kotlin. And it is possible because Kotlin has great interoperability with Java. So you can write a single class in Kotlin and keep the rest in Java or have 99% of your code in Kotlin and have only some leftovers in Java. [video…
20View on Reddit

u/sigma36in r/Kotlin • Recommends

On “Does JetBrains rewrite IntelliJ IDEA's code in Kotlin?”

Jeffrey van Gogh has mentioned this topic on Google I/O, it's about Android Studio, but still interesting I think: [video >Please don't take "Kotlin first" as "I need to go take all my Java code and rewrite it in Kotlin". That's not what we want you to do. Look at Android studio. That's many many hundred thousand lines of code. Right now, we're about 10% Kotlin of the Android Studio specific code. And so what we do is we only take new functionality, write that in Kotlin. And it is possible because Kotlin has great interoperability with Java. So you can write a single class in Kotlin and keep the rest in Java or have 99% of your code in Kotlin and have only some leftovers in Java.
12View on Reddit

u/yogimankkin r/Kotlin • Recommends

What's new in Kotlin on Android, 2 years in (Google I/O'19) # Timestamp
9View on Reddit