Hi guys! I wanted to discuss this topic: <https://...

# multiplatform

[Hadji Musaev]

Hi guys! I wanted to discuss this topic: https://youtrack.jetbrains.com/issue/KT-30878
I wanted to write a small library that would contain some business logic which should be shared across a service, an Android app and an iOS app. I can compile it separately for Java and Android, but I’m struggling to find the best way to structure the project in such a way that would allow me to build 3 different artifacts from the same code base. Has anyone had to solve a similar problem?

[Javier]

why you need the java plugin?

[uli]

This works for me:

kotlin {
    android()
    jvm("desktop")
}

[Javier]

but I am not sure what he wants to achieve, because kmp generate by default a jvm, android an ios artifacts, but maybe he can publish it with different groups or names?

[Hadji Musaev]

Thanks for your feedback guys! @Javier it’s a good question indeed. I have a JSON file that needs to be distributed with the library and since I started with JVM first, I put the file into resources and used java.getResource() to read it.

[Hadji Musaev]

@uli thanks, it did solve the build problem 🙂

[Javier]

you can put it in commonMain/resources

[Hadji Musaev]

That’s what I did, yes. Unfortunately, it doesn’t quite work, so I must be missing something in a different place.
I’ve added this test to the `commonTest`:

@Test
fun testConfigIsPresent() {
    val cfg = ConfigTest::class.java.getResource("/cfg.json")
    assertNotNull(cfg)
}

and it fails.
I have this entry in `build.gradle.kts`:

val commonTest by getting {
    dependencies {
        implementation(kotlin("test"))
       }
    }

[uli]

commonTest is not JVM specific though

[Javier]

exactly

[Javier]

have you tried okio to load the file?

[Hadji Musaev]

I see, then it explains it 🙂 @Javier no, I’m very new to both Kotlin and mobile dev and didn’t know about that library. Thanks once more for your help! 🙂

[uli]

Take a look here for fine grained build script:
https://gitlab.com/uluckas/s2-CrossPlatform-Test/-/blob/master/shared/build.gradle.kts
It requires

kotlin.mpp.enableGranularSourceSetsMetadata=true

in gradle.properties

[uli]

it comes with android, desktop, ios, common to share for all platforms and especially commonJvm to share between android and jvm