Is there setup example how to build android app wi...

# kapt

[Eugen Martynov]

Is there setup example how to build android app with annotation processing and kapt with JDK9+?

[gildor]

kapt works with JDK9+

[gildor]

no special config required
But particular APs may have own problems

[Eugen Martynov]

I have problem with Generated class from JDK

[gildor]

For example DataBinding do not work for us, even if you solve all problems with jaxb dependency

[gildor]

Dagger?

[Eugen Martynov]

yes

[Eugen Martynov]

ah, if databinding is still issue then I will not even try

[gildor]

it’s kapt bug that doesn’t propagate target JVM version to annotation processor

[gildor]

I’m not 100% sure

[gildor]

but bindings just not generating

[gildor]

no other exceptions, just no output

[Eugen Martynov]

I found next workaround

if (project.hasProperty('kapt')) {
    // Reference for 'kapt' DSL: <https://kotlinlang.org/docs/reference/kapt.html#java-compiler-options>
    kapt {
      // we expect this closure to run over a org.jetbrains.kotlin.gradle.plugin.KaptExtension
      javacOptions {
        option('-source', '8')
        option('-target', '8')
      }
    }
  }

[gildor]

yes, it doesn’t work for me for some reason

[Eugen Martynov]

same

[Eugen Martynov]

oke, thank you!

[gildor]

So I use com.github.pengrad:jdk9-deps

[gildor]

https://github.com/pengrad/jdk9-deps

[gildor]

this is just a dependency with Generated annotation

[gildor]

so it solves problem for me, but again, looks that binding do not work for some reason

[Eugen Martynov]

oke, let me check google state about jdk9 and databinding

[gildor]

Could you try to build you project with fixed dagger

[Eugen Martynov]

I will try today after lunch

[Eugen Martynov]

I will keep you updated

[gildor]

Thanks

[Sergey Chelombitko]

-source 8 works well in kotlin-android modules but broken in pure kotlin modules https://youtrack.jetbrains.com/issue/KT-33028

[gildor]

@Sergey Chelombitko Thanks!

[Eugen Martynov]

@gildor After just adding your suggested dependency I have

java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException

[gildor]

Yes, it’s from bindings

[gildor]

Try to add Jaxb dependencies to kapt classpath:

kapt "javax.xml.bind:jaxb-api:2.3.1"
kapt "com.sun.xml.bind:jaxb-core:2.3.0.1"
kapt "com.sun.xml.bind:jaxb-impl:2.3.2"

[gildor]

for some reason I also had this problem until I add the same to annotationProcessor classpath, but not sure why,

[Eugen Martynov]

I should check databinding sources

[Eugen Martynov]

probably why use it for xml parsing or whatever

[gildor]

Yes. of course

[gildor]

Anyway, because Jaxb removed from JVM default classes you have to add it

[gildor]

Could you please try?
Also add this:

annotationProcessor "javax.xml.bind:jaxb-api:2.3.1"
annotationProcessor "com.sun.xml.bind:jaxb-core:2.3.0.1"
annotationProcessor "com.sun.xml.bind:jaxb-impl:2.3.2"

[gildor]

I’m not sure is it required or not, but looks like that even tho we don’t use Java APT directly, I would expect that Kapt should populate it for APT, but I don’t have any real information is it correct or not, I just tried to make it work

[Eugen Martynov]

It is required if you still have somewhere java class with databinding

[gildor]

Yes, but I would expect that Kapt sets own classpath to APT

[Eugen Martynov]

oke

[Eugen Martynov]

I ’m on the final stages

[Eugen Martynov]

compileDebugJavaWithJavac fails with the same class missing

[gildor]

even with annotationProcessor?

[Eugen Martynov]

it fixes

[Eugen Martynov]

I added it to the gradle file that is applied for all subprojects

[Eugen Martynov]

but looks like app is not in this set

[Eugen Martynov]

final strokes

[Eugen Martynov]

it is green

[Eugen Martynov]

let see if everything is correctly generated/working

[Eugen Martynov]

I see data binding generated classes

[gildor]

Nice

[Eugen Martynov]

The apk file looks correct. Installing…

[Eugen Martynov]

It runs

[Eugen Martynov]

Thank you!!!

[gildor]

👍

[gildor]

Will try later too. We just recently updated on AGP 3.5, maybe something fixed

[Eugen Martynov]

I’m actually trying this on AGP 3.5

[gildor]

Yes, I got it, I tried on 3.4 as I remember