Basic Gradle/MPP question: The example Gradle/MPP setups I can find online seem to be split into two definite camps: 1. Define all platforms in one module with different source sets. 2. Define each platform in it's own module, referencing another Common module - each module containing only one source set. Can anyone suggest the pro/con of each setup and why they are both presented? It's quite confusing for a newcomer to be presented with both of these as 'the way to do multi-platform'. Personally, separate modules with one source-set per module feels more natural to me: - Follows established Gradle conventions - Doesn't require learning new knowledge of Gradle's often opaque data-structures (how to configure target within module, rather than module directly) - Keeps the platform modules more loosely coupled, not defined in the same file

Hello everyone. Is it possible to create a multiplatform project that shares code between a JVM, Android and iOS implementations? I've only found tutorials on how to create a JVM/JS/Native or Android/iOS multiplatform project, but nothing like Android/iOS/JVM and was wondering if that's supported

Is it possibile, inside

targets

, to place an

android

clause including a sibling module that is an android app? I have the current structure:

project 
   |- android-app
   |- common
        |- commonMain
        |- iosMain
        |- jvmMain

I would like to create some

actual

implementations inside the

android-app

module, which is an Android application module. How would I have to do? Right now when I compile the Android app the

jvmMain

is compiled, but I would like to provide some custom

actual

implementations for the Android app

How do I run tests that are present inside

commonTest

?

Hi I've been doing Java for a few years now and fell in love with Kotlin this summer. To continue my training I'd like to begin a project in Kotlin Multiplatform as a personal proof of concept. The idea is to have an API that is an abstraction around JSON in general, and in which each platform can delegate to an existing JSON API (I don't want to reinvent the wheel, I just want a common interface). I have read the main articles about Multiplatform, but there are a few things I don't understand. What is the type of the artifacts of the common module? In JVM the artifacts are JARs and are published to MavenCentral. In the JS world it's not possible to use JARs as dependencies... So what does the common project generates? As far as I know there isn't a Kotlin specific type of artifact?

I consider to switch to the new multiplatform gradle plugin. Is it possible to specify compileOnly and runtimeOnly dependencies? So far I have only seen api and implementation. But maybe I don't understand ap/implementation correctly

How comes that

commonMain/kotlin

is recognized as a source folder and

androidMain/kotlin

is not? The Gradle view in IntelliJ also doesn't list any Android source sets 😞 https://gist.github.com/fluidsonic/04f7b15c4bc5263cd5f82632697804a4

After using the new project template in IntelliJ the JVM/Android builds without issue but attempting to compile the iOS results in error "no such module app".

I guess annotation processing for the common module is not a thing? 🙃

I’m seeing low performance when using multiplatform for ios. Anyone else?

linkSharedCodeReleaseFrameworkIos 
BUILD SUCCESSFUL in 1m 55s

There are only some functions in the commons module

Could I get a review on this script? I'm wondering if I really need to setup all the coroutine dependencies explicitly. Also, what does the Android target do that the JVM target doesn't? https://github.com/pardom/oolong/blob/master/oolong/build.gradle.kts

Anyone can tell me why I get this error and how I should solve it? https://gist.github.com/RdeWilde/74d76d5a4ab736184aa14808b00fc4c9

I migrated Android library modules to Kotlin Multiplatform gradle module, and now, the tests in

androidTest

are run as unit tests without instrumentation, making them fail (they are run on the computer without Android OS with no option to run it from an Android device/emulator). Where should I put my instrumented tests, or how should I configure my module to get instrumentation back?

Has anyone encountered an issue with an iOS app that includes kotlin multiplatform code crashes on start on iPhone 5c when downloaded from app store? Local build works fine, ipa from app store seems to have this issue.

Hello everyone, how do I include all the

androidMain

dependencies into

androidTest

? Should I just copy/paste them or is there a better method to do it, like a reference?

How do I test the fails of a test that relies on a

suspend

funciton? Let's consider this class

/**
 * Allows the login of a user based on his private key.
 */
class PerformLoginUseCase internal constructor(private val repository: AuthenticationRepository){

    /**
     * Logs the user into the system using the given [authKey].
     * @return the user data once the login has been successful.
     */
    suspend operator fun invoke(authKey: PrivateKey): UserData {
        return repository.login(authKey)
    }
}

I have the following test

@Test
fun useCaseThrowsExceptionWhenRepositoryDoes() {
    assertFailsWith(Throwable::class) {
        coEvery { repository.login(any()) } throws Throwable()
        GlobalScope.launch { performLogin(mockk()) }
    }
}

While this should work properly, it fails with an

assertionError

. I think the exception is not raised in time, so who should I do this?

I have some problems with dependencies, what is the correct way, in a MPP, to use a MPP library as a dependency?

sourceSets {

        val commonMain by getting {
            dependencies {
                api("mygroup:mympplib:0.0.1-SNAPSHOT")
            }
        }

        val androidMain by getting {
            dependencies {

            }
        }

        for (iosTarget in iosTargets) {
            getByName("${iosTarget.name}Main") {
                dependencies {

                }
            }
        }

    }

I’m trying to use the kotlin

1.3.30-eap-11

version, but I’m receiving this error:

* What went wrong:
Plugin [id: 'org.jetbrains.kotlin.multiplatform', version: '1.3.30-eap-11'] was not found in any of the following sources:

- Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
- Plugin Repositories (could not resolve plugin artifact 'org.jetbrains.kotlin.multiplatform:org.jetbrains.kotlin.multiplatform.gradle.plugin:1.3.30-eap-11')

I’m trying to use this in my `build.gradle.kts`:

buildscript {
	repositories {
		maven { url = uri("<https://dl.bintray.com/kotlin/kotlin-eap>") }
...
	dependencies {
		classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.30-eap-11")
...
}

allprojects {
	repositories {
		maven {
			url = uri("<https://dl.bintray.com/kotlin/kotlin-eap>")
			content {
				excludeGroup("Kotlin/Native")
			}
		}
...

Am I missing something? Edit: The error is happening here (in my root

build.gradle.kts

file):

plugins {
	kotlin("multiplatform") version "1.3.30-eap-11"
}

Will that limitation be lifted at some point?

Otherwise how would it be distributed.

Has anyone seen a better publishing script than this? https://github.com/square/sqldelight/blob/master/gradle/gradle-mvn-mpp-push.gradle

is there a gradle plugin to publish kotlin multiplatform ios framework to CocoaPods?

Hi, I am trying to update a project from the old format for mpp projects to the current format, but I stuck with a problem when running the android app... it seems that the Activity is not found in the main dex...

2019-03-05 21:46:22.422 25541-25541/br.com.youse.forms.app E/AndroidRuntime: FATAL EXCEPTION: main
    Process: <http://br.com.youse.forms.app|br.com.youse.forms.app>, PID: 25541
    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{<http://br.com.youse.forms.app/br.com.youse.forms.samples.form.FormLoginActivity|br.com.youse.forms.app/br.com.youse.forms.samples.form.FormLoginActivity>}: java.lang.ClassNotFoundException: Didn't find class "br.com.youse.forms.samples.form.FormLoginActivity" on path: DexPathList[[zip file "/data/app/br.com.youse.forms.app-B2ycXZrm8-D79TrXtKX7Iw==/base.apk"],nativeLibraryDirectories=[/data/app/br.com.youse.forms.app-B2ycXZrm8-D79TrXtKX7Iw==/lib/x86, /system/lib, /vendor/lib]]
...
     Caused by: java.lang.ClassNotFoundException: Didn't find class "br.com.youse.forms.samples.form.FormLoginActivity" on path: DexPathList[[zip file "/data/app/br.com.youse.forms.app-B2ycXZrm8-

I did check if the Activity in the AndroidManifest is right and I could run the same

:app

code switching the local mpp project to a published dep. I also can ran the unit tests from commonTest just fine. Does anyone has ran into something like that? I uploaded my current work here https://github.com/BugsBunnyBR/forms-mpp-problem if anyone want to take a look...

Hi guys, somebody is working on an UI library? I cannot override UITableViewDataSource property on kotlin. What am I doing wrong? Is it supported?

Hello everyone. Where should I put the sources folder in order to have

actual

classes for the android instrumented tests? Right now I'm putting them into

androidTest

, but they are executed as unit tests. If I try running

gradle checkConnected

I get the following error:

Expected object 'XYZ' has no actual declaration in module

How should I configure the project to have instrumented tests?

Will multiplatform for iOS become more Swift-like? I can't believe

NSInteger

is back 😢

Hello. I’m having an issue with a shared library iOS/Android. When including the framework in XCode:

@property (readonly) double double;
@property (readonly) float float;
@property (readonly) int32_t int;

Apparently symbols generated by Kotlin Native aren’t compatible with Objective C

Hey folks, I’m trying to find out why for some classes defined on KN there is strange name generated (in header files), for example:

__attribute__((swift_name("Kotlinx_coroutines_core_nativeCoroutineDispatcher")))
@interface MainKotlinx_coroutines_core_nativeCoroutineDispatcher : MainKotlinAbstractCoroutineContextElement <MainKotlinContinuationInterceptor>

__attribute__((swift_name("Ktor_client_coreHttpClientEngineConfig")))
@interface MainKtor_client_coreHttpClientEngineConfig : KotlinBase

etc.

And it looks weird on Swift side to have smth like this

public class UICoroutineContext: Kotlinx_coroutines_core_nativeCoroutineDispatcher

Kotlin mpp is converting my generic type parameters to

Any?

. Is this expected?

Should I just type cast in this case?