Hi all, I am a Kotlin beginner and I decided to pl...

# multiplatform

[rb90]

Hi all, I am a Kotlin beginner and I decided to play a little bit around with Kotlin Multiplatform. I am looking for a way to version a shared module - so I started think about using jfrog artifactory for that purpose. Did anyone of you already upload a Kotlin Multiplatform shared module to artifactory an consume it from there?

[rb90]

Could not determine the dependencies of task ':app:lintVitalRelease'.
> Could not resolve all artifacts for configuration ':app:debugCompileClasspath'.
   > Could not resolve com.rb.kmp_test_shared_lib:shared:1.0.4.
     Required by:
         project :app
      > No matching variant of com.rb.kmp_test_shared_lib:shared:1.0.4 was found. The consumer was configured to find an API of a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug', attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm' but:
          - Variant 'commonMainMetadataElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-api' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
          - Variant 'iosArm64ApiElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-api' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
          - Variant 'iosArm64MetadataElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-metadata' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
          - Variant 'iosX64ApiElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-api' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
          - Variant 'iosX64MetadataElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-metadata' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'native' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
          - Variant 'metadataApiElements-published' capability com.rb.kmp_test_shared_lib:shared:1.0.4:
              - Incompatible because this component declares a usage of 'kotlin-metadata' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed an API of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
              - Other compatible attribute:
                  - Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
* Try:
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[rb90]

I was able to upload the package successfully to artifactory. But when I try to consume it from there in another android app I get this error here:

[Kris Wong]

https://medium.com/vmware-end-user-computing/publishing-kotlin-multiplatform-artifacts-to-artifactory-maven-a283ae5912d6

[rb90]

Hi Kris - nice to meet you and wow you are my hero! I read that article. This was my entry point and I guess the reason why I am able to upload to artifactory 👍. But the part where I try to consume did not work for me. I run in the error I posted above 😞

[Kris Wong]

and you have the bit about publishAllLibraryVariants?

[rb90]

Yes 😕:

kotlin {
.
.
.
    android() {
        publishAllLibraryVariants()
    }
}

[rb90]

I am so desperate I already wrote a stackoverflow question here with some more details 😞: https://stackoverflow.com/questions/65407017/use-kotlin-multiplatform-library-from-jfrog-artifactory

[Kris Wong]

what version of gradle are you using?

[Kris Wong]

why does the screenshot show a jar and not an android aar?

[Kris Wong]

you're also consuming a jar

[rb90]

Ah okay so already when uploading there went sth wrong? an aar should be uploaded to artifactory right?

[rb90]

I am sorry I am a really new here with kotlin, artifactory and kotlin multiplatform 😁.

[rb90]

when running ./gradlew --version in the kmp project it says that I am using Gradle 6.7

[rb90]

It seems that with the setup made jars will be generated not aar files? What can I do to force the generation and upload of aar files?

[Kris Wong]

if you have an android target, then it should be publishing android artifacts

[rb90]

I put all the code for building the artifacts in the build file of the shared module of the kotlin multiplatform project. Where do I need to define that those artifacts should be build for an android target?

[rb90]

I guess the problem is somewhere in this lines here:

defaults(delegateClosureOf<groovy.lang.GroovyObject> {
            invokeMethod("publications", arrayOf(
                    "androidDebug", "androidRelease", "kotlinMultiplatform", "metadata"
            ))
        })

The article was written in May 2020, since then there were some kotlin releases. I guess androidDebug and androidRelease should be changed to sth. else. Kris did the implementation you described in the tutorial still work for you?

[rb90]

Solved my problem and also updated my stackoverflow question. Thanks for the hint with the aar's - this finally did the trick 😉. @Kris Wong maybe you also want to please update your medium article? I guess it won't work anymore like you described it there because of further KMP releases?