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# multiplatform

[Kruger Brent]

Screen Shot 2019-06-06 at 3.27.55 PM.png

[Dominaezzz]

Is that a multi module project?

[Dominaezzz]

If it is, can I see your settings.gradle.kts?

[Kruger Brent]

yeah sure.. it is one of the sample projects on kotlin?native github that demonstrates the ability to use a cocoapod in kotlin

[Kruger Brent]

pluginManagement {
repositories {
jcenter()
maven { setUrl("https://dl.bintray.com/kotlin/kotlin-dev") }
maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap") }
}

resolutionStrategy {
val kotlin_version: String by settings
eachPlugin {
when {
requested.id.id == "org.jetbrains.kotlin.native.cocoapods" ||
requested.id.id == "kotlin-native-cocoapods" ->
useModule("org.jetbrains.kotlinkotlin gradle plugin$kotlin_version")
requested.id.id.startsWith("org.jetbrains.kotlin") ->
useVersion(kotlin_version)
}
}
}
}

[Dominaezzz]

Is that it? You need to add include(":cocoapods") at the bottom.

[Dominaezzz]

Basically add it to the root project.

[Kruger Brent]

exactly, I was wondering how was that getting linked at all?

[Kruger Brent]

so where do I add that line of code?

[Dominaezzz]

In settings.gradle.kts.

[Kruger Brent]

okay, I added that in the settings.gradle

[Kruger Brent]

but it's not able to detect and pick the change

[Kruger Brent]

it's throwing an error from the file

[Dominaezzz]

Hmm, it might be an issue with the submodule path.

[Dominaezzz]

What's the error?

[Kruger Brent]

* What went wrong:
An exception occurred applying plugin request [id: 'org.jetbrains.kotlin.jvm', version: '1.3.40-eap-40']

Failed to apply plugin [id 'org.jetbrains.kotlin.jvm']

> Cannot add extension with name 'kotlin', as there is an extension already registered with that name.

[Kruger Brent]

and this error is in build.gradle.kts

[Kruger Brent]

[Kruger Brent]

this is my build.gradle.kts

[Dominaezzz]

You can't specify version multiple times.

[Dominaezzz]

On line 4, remove the version bit.

[Kruger Brent]

yeah I removed it, but it still says this * What went wrong:
An exception occurred applying plugin request [id: 'org.jetbrains.kotlin.jvm', version: '1.3.40-eap-40']
> Failed to apply plugin [id 'org.jetbrains.kotlin.jvm']
> Cannot add extension with name 'kotlin', as there is an extension already registered with that name.

[Dominaezzz]

Ohhhhhh

[Kruger Brent]

something to do with the kotlin(''jvm") i guess

[Dominaezzz]

You can't do both multiplatform and jvm.

[Dominaezzz]

Pick one.

[Dominaezzz]

Probably multiplatform.

[Kruger Brent]

okay. cool. let me try that.

[Kruger Brent]

oh yeah that worked. Thanks a lot. Appreciate it!

[Dominaezzz]

No problem.

[Kruger Brent]

but this error still persists

[Kruger Brent]

[Kruger Brent]

I included it as a sub-module

[Dominaezzz]

Try removing the colon.

[Kruger Brent]

The cocoapods is the root right, and aren't we adding that as a submodule to kotlin-library project, whereas shouldn't it be the other way?

[Kruger Brent]

yeah removed the colon, and executed gradle build command, no luck

[Dominaezzz]

Hmm, I'm not sure. What does your project folder look like?

[Kruger Brent]

[Dominaezzz]

I now see why the IDE might be confused.

[Dominaezzz]

You don't need that include btw.

[Kruger Brent]

okay, what's your inference

[Kruger Brent]

oh

[Kruger Brent]

but how do we link the both

[Dominaezzz]

I think idea wants kotlin-folder to be the root directory.

[Dominaezzz]

But that won't work for you I think.

[Dominaezzz]

So I think you could maybe...... I'm not too sure tbh.

[Kruger Brent]

okay, I got it. I shouldn't even be bothered by that, because we shouldn't be trying to link that from intelliJ as I understand. Now since I am able to generate podspec successfully, I navigated to the ios-app folder and ran a pod install and an xcworkspace was generated. Now when I launch in Xcode, it opens up with the kotlin-library pod.

[Dominaezzz]

Oh okay. Well, if you really want IntelliJ then you can always open just the kotlin-library folder.

[Dominaezzz]

Small tip. maven("......") is slightly shorter than maven { setUrl("......") }.

[Kruger Brent]

cool. Thanks. makes sense, I will update the file.

[Kruger Brent]

When I try to build the project in Xcode, it's throwing some weird error.

[Kruger Brent]

sorry to bother you again!

[Dominaezzz]

I've seen this in an issue before.....

[Dominaezzz]

Try setting that property.

[ilya.matveev]

This property is used to replace the default Kotlin/Native compiler used by the Gradle plugin with a local distribution. Since this sample is included in the K/N repo, it has this property specified to use a compiler built from sources.

So you may just remove org.jetbrains.kotlin.native.home from your gradle.properties and rerun the build.

[Kruger Brent]

@ilya.matveev that worked like a charm. Thanks a lot.

[Kruger Brent]

@Dominaezzz yeah, I did as IIya Matveev said and it worked.