updating to the new MPP plugin/Kotlin 1.4.21 is such a pain point, I really hoped it would be smoother 😞 I hope someone can answer me the following questions 1. ✔️ Is it considered normal that a

gr build

which fails due to failing test succeeds when I re-run it (without changing anything) -> jvmTest is skipped

as it is up-to-date

(allTest is executed but does nothing besides generating a html report). How can I change this behaviour? => seems like it: https://blog.gradle.org/stop-rerunning-tests 2. ✔️How can I disable the

Please initialize at least one Kotlin target in...

check? It was not there in 1.3.72 but is in 1.4.21. I have a root project which does not contain any source but several MPP sub-projects 3. ✔️ After the update to 1.4.21 I cannot longer run tests (via gradle), I get

The root cause java.lang.UnsupportedOperationException was thrown at: org.jetbrains.kotlin.load.kotlin.TypeSignatureMappingKt.mapType(typeSignatureMapping.kt:99)

during

compileTestKotlinJvm

is this a known problem? 4. ✔️ not really a problem as there is an easy workaround but out of curiosity why do

js

targets need the extra definition of the dependency to kotlin-stdlib-js?

General question about project structure for KMM, does it make any difference (like build time, or restriction in expanding to web in the future) if you have a top-level KMM module which includes all the other modules as a dependency versus multiple KMM modules (as separate features) at the top level ? Root • android-app • ios-app • shared -user -products -routines -entries

Anyone has exp dealing with Kotlin sealed classes + Generics working in Swift? I’m struggling a bit to find a good implementation e.g

sealed class Result<T> {
  Success(val data: T): Result()
  Error(val message: T): Result()
}

How would you switch case with a swift optional + handle both success and error cases?

Hello kotliners, A question of opinion here. I have been building multiplatform libs to be shared across (jvm,android and js). In very many cases, my source codes only reside in

commonMain

which is obviously a good thing. However, I do end up including

jvm

,

android

and

js

as compilation targets. My question. Since the

android

platform basically uses

java

classes. Is there a need for me to keep including

android

as a compilation target? coz I do have the java target and all. Those who skipped compiling for the

android

target, have you ever faced an issue during importing your library to an

android

development? Note: All targets are compiled using the

IR

backend

Has anyone tackled the code generation for boilerplate between coroutines and Swift code? My plan is to use something similar to this https://dev.to/touchlab/working-with-kotlin-coroutines-and-rxswift-24fa to use coroutines/Flow as Swift Combine Publishers on the Swift side. But it requires a lot of boilerplate for a big project. Maybe there's a better alternative? I wanted to write a generic wrapper for the default completion blocks generated for

suspend

functions, but they don't have a stable signature, so I don't think it's possible.

Hi, can anybody tell me how to use [AtomicInt](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.native.concurrent/-atomic-int/) in common code?

How to test kotlin jvm? I can test Kotlin/Native very easily... But for K/JVM I get this ^

I’m trying to build KMP project on a windows machine and getting this error

C:\Users\vtouch\.konan\dependencies\msys2-mingw-w64-x86_64-clang-llvm-lld-compiler_rt-8.0.1/bin/clang++ command returned non-zero exit code: 1.
output:
C:\Users\vtouch\.konan\dependencies\msys2-mingw-w64-x86_64-clang-llvm-lld-compiler_rt-8.0.1\bin\ld: cannot find -lsqlite3
C:\Users\vtouch\.konan\dependencies\msys2-mingw-w64-x86_64-clang-llvm-lld-compiler_rt-8.0.1\bin\ld: cannot find -lcurl

Can someone please help resolving this issue. I am nee to windows dev environment.

Is there an easy way in Swift to await an async operation? So instead of relying in callback fashion we would suspend

// This isLoggedInUseCase is a Kotlin suspend fun
isLoggedInUseCase.invoke { task, error in
    switch task {
    case let task as TaskResultSuccess<KotlinBoolean>:
        // Callback style result here with true|false
        break;
    case _ as TaskResultError<KotlinBoolean>:
        // Handle error
        break;
    default: break;
    }
}

// What I wanted is to await the result of the usecase exec and
// Only then continue execution of the 'main' func

I'm trying to setup a KMM module with Couchbase Lite as a platform dependency for both Android and iOS. I'm running into errors getting this to work with CocoaPods for iOS:

Exception in thread "main" java.lang.IllegalArgumentException: 'CBLQueryMeta' is going to be declared twice
	at org.jetbrains.kotlin.native.interop.gen.KotlinFile.<init>(KotlinCodeModel.kt:257)
	at org.jetbrains.kotlin.native.interop.gen.StubIrBridgeBuilder$kotlinFile$1.<init>(StubIrBridgeBuilder.kt:44)
	at org.jetbrains.kotlin.native.interop.gen.StubIrBridgeBuilder.<init>(StubIrBridgeBuilder.kt:46)
	at org.jetbrains.kotlin.native.interop.gen.StubIrDriver.run(StubIrDriver.kt:122)
	at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.processCLib(main.kt:315)
	at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.interop(main.kt:73)
	at org.jetbrains.kotlin.cli.utilities.InteropCompilerKt.invokeInterop(InteropCompiler.kt:45)
	at org.jetbrains.kotlin.cli.utilities.MainKt.mainImpl(main.kt:19)
	at org.jetbrains.kotlin.cli.utilities.MainKt.main(main.kt:41)

build.gradle.kts:

plugins {
    kotlin("multiplatform") version "1.4.21"
    kotlin("native.cocoapods") version "1.4.21"
    id("com.android.library")
}
...

kotlin {
    android()
    ios()
    cocoapods {
        summary = "TBD"
        homepage = "TBD"
        ios.deploymentTarget = "9.0"
        pod("CouchbaseLite") {
            version = "~> 2.8.1"
        }
    }
    ...
}
...

Any tips on getting this to work?

Anyone using MP, Android Compose, and running into an issues with the

remember

API in your "shared" module?

I want to use Kotlin JS to create a JavaScript library with TypeScript declaration files (*.d.ts). For this, I use the new IR compiler. But I’m wondering which Gradle task I should use for it. Currently, I’m using

./gradlew clean compileProductionExecutableKotlinJs

. But

compileProductionExecutableKotlinJs

does not appear in the

./gradlew tasks

list, so I assume it is not the right one. Which Gradle task should I use?

When I try to compile a data class with default values with the IR compiler to JavaScript, I get this error:

IllegalStateException: Can't find name for declaration FUN name:Foo_init_$Create$ visibility:public modality:FINAL <> (bar:kotlin.String?, $mask0:<http://kotlin.Int|kotlin.Int>, $marker:kotlin.js.DefaultConstructorMarker?) returnType:api.model.Foo

. I assume this is a bug but is there a small workaround for it? Or do I need to wait until it is fixed?

@ExperimentalJsExport
@JsExport
data class Foo(
    val bar: String? = null
)

How to see stdout n stderr of failing tests, this setting only applies for jvm:

tasks.withType<Test> {
	testLogging {
		exceptionFormat = TestExceptionFormat.FULL
		showStandardStreams = true
		showStackTraces = true
	}
}

Regarding of testing, I’ve been writing some tests on commonMain and they’re always running under ios or iosX64 Gradle tasks. I’ve downloaded the kmm-sample project from KMM documentation and the same happens there. Does anybody knows why the shared code is always executed under ios tasks? I’m having difficulties to find some quality content about shared tests.

Hello, I am having a hard time publishing my multiplatform library to Sonatype. My build.gradle file is this: https://github.com/dragossusi/sevens-payload/blob/master/payload/build.gradle.kts I somehow made it work, but it creates 2 repositories at the same time, 1 fails everytime.

Hello, I just started the KMM project. 😁 Before that, I mainly developed Android. So I wonder what IDE you use when writing Swift code in the KMM project. It’s very uncomfortable to write Swift code in Android Studio, so I’m using XCode and Android Studio alternately. Are there any tips for me?

Hello All, is there any project which is open source and live in App/Play store ? Wanted to check out the app

Hi. is DataStore available for KMM ? like I have used this library which uses shared pref and NSUSerDefaults for their native storage am not sure if we can do something like this using datastore ? Would I require to create my own native preference storage file which uses datastore and NSUserdefaults to store preference or is there any built in or third party available ?

I used to have a

jvm

target for which the generated library was in kotlin and readable from my android app. Since a changed the target to

android

both the debug and release libraries are in Java and not readable from android studio (it gives me the option to “Decompile to Java” which gives unclear/non-readable code, “Download sources” which does nothing and “Choose sources” for which I don’t know what to select. Isn’t there a simple config for the debug variant at least to make it readable just as the file from the shared library?

gradlew allTests

is not running

allTests

for

androidTest

source set, so I have to use

gradlew test

, is there a way to force

allTests

to detect the android tests? I could do something like allTests dependsOn test but should be great

allTest

just works by default with them

Hi, anyone who could help with a kmm project setup ?

What is the proper way on multiplatform to add an external java sourceset?

Hi. Someone has experience working with KMM on the m1/apple silicon/arm macbooks? I can configure the shared module to run on iOS physical devices but it’s broken for simulators

Building for iOS Simulator, but linking in dylib built for iOS, file '/Users/.../Shared.framework/Shared' for architecture arm64

Hello! Someone has an example of a multi-module based KMM? I have seperated the domain and I want to share it embedded into shared module

I am getting unresolved reference due to sqldelight when I run

./gradlew build

Unresolved reference: UIKit
Unresolved reference: UIDevice
Unresolved reference: db
Unresolved reference: squareup
Unresolved reference: SqlDriver
Unresolved reference: NativeSqliteDriver
Unresolved reference: AppDatabase

It works fine when I run the app. KotlinVerion = 1.4.2 sqldelight version =1.4.4

Has anyone experience with building and integrating KMM code into an iOS application? I have prototyped the complete workflow for an Android and iOS app. One thing that I could not get to work on iOS was debugging. The debugger in Xcode basically only shows the address of the object but no members. Is there a way to improve that behavior?

Hi everyone! Is there some up-to-date guide on how to use a Cocoapod in the iOS part of a shared module? Following this isn't even quite possible since apparently the syntax for pod() changed since it's creation. And if I extrapolate the instructions and simply add

pod("AFNetworking")

to the cocoapods section in build.gradle.kts, I get

> Task :shared:cinteropAFNetworkingIosArm64 FAILED
Exception in thread "main" java.lang.Error: /var/folders/4g/3s9scp9d5593dphx7n_7nhk40000gn/T/tmp1272859169392324213.m:1:9: fatal error: module 'AFNetworking' not found

I'm trying this in an KMMApplication template from AndroidStudio 4.1.1 running Kotlin Plugin 1.4.21-release-Studio4.1.1, in which I've only modified build.gradle.kts to add

kotlin("native.cocoapods")

to the plugins, changed the

ios {
…
}

block to

ios()

to get rid of the

Caused by: java.lang.IllegalArgumentException: Cannot create binary debugFramework: binary with such a name already exists

error that appears when adding the Cocoapods plugin and added this

cocoapods {
        pod("AFNetworking")
}

section. Am I missing something?

I have a KMM project with targets for Android/iOS only. Whenever I invoke a test from commonMain from the IDE gutter it defaults to running the

cleanIosTest iosTest

gradle tasks. I can edit the configuration of past tests to use a different gradle task but am curious if there is a way to have the tests that are started from the gutter to use a different gradle task?