What jvm does everyone target their kotlin android apps to

# android

[Ben Butterworth]

What jvm does everyone target their kotlin android apps to

[Zach Klippenstein (he/him) [MOD]]

1.8 for all new stuff, along with min sdk of 21.

[Ben Butterworth]

The Kotlin compiler supports the JVM 9, 10, 11, and 12 bytecode versions as target since Kotlin 1.3.30

The advantage is that you will automatically benefit from additional bytecode optimizations in future versions of the Kotlin compiler

https://stackoverflow.com/questions/52888341/does-kotlin-support-java-11

[Ben Butterworth]

I was doing the same, just left it at 1.8. Wanted to see if people knew about these “optimizations”

[Zach Klippenstein (he/him) [MOD]]

Does R8 support those bytecode levels already? I think Jake gave a talk on this recently…

[Zach Klippenstein (he/him) [MOD]]

https://jakewharton.com/whats-new-in-java-19-the-end-of-kotlin/

[Ben Butterworth]

I dont think this talk has anything to do with R8, can you elaborate. I watched the first 5 minutes

[Zach Klippenstein (he/him) [MOD]]

I watched it a few months ago, but I thought he did talk about R8

[Zach Klippenstein (he/him) [MOD]]

this page mentions desugaring of _API_s above 8, but nothing about bytecode: https://developer.android.com/studio/write/java8-support

[Ben Butterworth]

Ok i tried to compile to JDK14 and JDK13 and it failed. R8 only supports up to JDK12

[Ben Butterworth]

Oh wait, jdk12 doesnt work either.