Hi. Can someone instruct me how to create a Kotlin Multiplatform Mobile project with App Code? The new plugin doesn’t seem to work. I select a new project and Application -> Kotlin Multiplatform Mobile. Then I enter the name and click Finish. I select a folder and click Open. The IDE goes back to the Welcome to AppCode window.

Hey guys i am trying to communicate between kmm module and application. I tried to implement interface. In androidMain

actual class Platform actual constructor() {
     actual val versionCode = AppConfig.versionCode
}

interface AppConfig {
    val versionCode: String
}

But I am getting error

I’m trying to compile multiple KMM modules into a single iOS framework using the so called “shared umbrella module”. I’ve noticed that when compiling such module Gradle says it has no source:

> Task :shared:compileKotlinIosSimulatorArm64 NO-SOURCE
> Task :shared:linkDebugFrameworkIosSimulatorArm64 NO-SOURCE
> Task :shared:assembleDebugAppleFrameworkForXcodeIosSimulatorArm64 NO-SOURCE

Which is true because technically there is no source file in that module, it only includes other modules as dependencies. Nevertheless no actual framework is generated and the next Gradle task fails with:

> Task :shared:embedAndSignAppleFrameworkForXcode FAILED
cp: /.../project/shared/build/xcode-frameworks/Debug/iphonesimulator15.4/shared.framework: No such file or directory

The same umbrella module works fine if imported from the android app (I can use and see all its transitive dependencies). How to debug this?

Getting an

Undefined symbols for architecture arm64

during a KMM build (using sqldelight). See 🧵 for full error log. It seems similar to https://github.com/cashapp/sqldelight/issues/1442 but it’s not the same exact missing symbols. What could this be? (perhaps related to: https://kotlinlang.slack.com/archives/C3PQML5NU/p1650038479860419)

In my shared code I have this and would a contract make sense here to so I don't have to force unwrap or use the null checks where I call the add function? I am trying to understand where the contract keyword makes sense.

fun addClothingToClothingWeather(clothing:ClothingTypes) {
        if(clothingWeatherData == null) clothingWeatherData = ClothingWeatherModel()
        clothingWeatherData!!.clothing?.toMutableList()?.add(clothing)
    }

@Serializable
data class ClothingWeatherModel(val clothing:List<ClothingTypes>? = emptyList(), val temperature:MainTemperature? = null, val situation:Situations? = null)

How do I enable context receivers in common code? Using the following in gradle:

tasks.withType<KotlinCompile> {
    kotlinOptions.jvmTarget = "1.8"
    kotlinOptions.freeCompilerArgs = listOf("-Xcontext-receivers")
}

tasks.withType<Kotlin2JsCompile> {
    kotlinOptions.freeCompilerArgs = listOf("-Xcontext-receivers")
}

tasks.withType<KotlinCompileCommon> {
    kotlinOptions.freeCompilerArgs = listOf("-Xcontext-receivers")
}

tasks.withType<KotlinNativeCompile> {
    kotlinOptions.freeCompilerArgs = listOf("-Xcontext-receivers")
}

And then inspecting it in File -> Project Settings -> Modules shows it being added to every target except commonMain/commonTest

Hi all, I am getting compilations errors with the new context receivers. I have configured it as follows:

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile::class).all {
    kotlinOptions.freeCompilerArgs = listOf("-Xcontext-receivers")
}

And my context receiver is simple:

context(Node.BuilderScope)
fun foo() {
// nothing here yet
}

The error I am getting:

java.lang.IllegalStateException: FULL: FUN name:foo visibility:public modality:FINAL <> (<this>:nl.avwie.vdom.Node.BuilderScope) returnType:kotlin.Unit
 Ir: nl.avwie.vdom#foo(nl.avwie.vdom.Node.BuilderScope){}
 Descriptor: nl.avwie.vdom#foo!nl.avwie.vdom.Node.BuilderScope(){}

	at org.jetbrains.kotlin.backend.common.serialization.mangle.ManglerChecker$visitDeclaration$2.invoke(ManglerChecker.kt:96)
	at org.jetbrains.kotlin.backend.common.serialization.mangle.ManglerChecker$visitDeclaration$2.invoke(ManglerChecker.kt:95)

Hello everyone. I’m new to compose 🙂 I am trying to create a multiplatform project (android, iOS, web, desktop). I found this repository with multi platform set up: https://github.com/joreilly/PeopleInSpace Is there any reference that I can follow to setup similar project with those modules?

Hi everyone 🙂 I am new to Kotlin Multiplatform. Here’s my typical package structure for an Android app that I follow in every project I work. I usually use MVVM+Clean Architecture+Koin for DI in my Android apps. I have read a lot of articles regarding KMM. Most examples have one module for ios one for android one shared and so on. But if you follow MVVM+CLEAN you must have at least 4 modules. I just don’t know what should I do. Should I create all of that modules as packages inside shared module or should I create other modules myself? in app module I initialise dependency injection in presentation module I create UI and everything related to UI. data and domain modules are used for business logic, repositories,use cases,models and so on. Now with KMM I feel confused. Should I treat androidApp module as my presentation module and put the rest of the code in shared module? Thank you very much in advance.

Is there any sort of tool or plugin to go from a

java-library

to a

kotlin("multiplatform")

project configuration? I'm looking to slowly introduce Kotlin Multiplatform on a few modules that currently only target the JVM. I'd like a way to swap between the two so there is less hesitation from other developers to give it a try. Basically it would make the KMP module "backwards compatible" to just a java-library, and completely avoid any references to multiplatform plugins when it was switched off. Goals: • Just change "myplugin.jvm.lib" to "myplugin.kmp.lib". • This would take all

dependencies

from the java-library and make them dependencies on

commonMain

. • It would be nice to just change one line and see if it compiles to Kotlin Multiplatform as

commonMain

. I've given this a try, but when trying to map dependencies I get:

Unresolved reference: implementation

because it should be a

commonMain

dependency instead. I've thought about two ways of approaching this: • See if I can just iterate through declared dependencies, move them to commonMain, and remove them from the default dependencies block. • Create a custom "commonDependencies {}" extension that can then map to either. I'm looking at how I can do this, but wanted to see if any tools or processes currently exist to make a one-line backwards compatible (java-library instead of kotlin("multiplatform")) module?

Are there any good resources to help getting an existing kotlin multi platform project setup with AppCode? Any tricks to getting breakpoints in Kotlin code when building to an iOS device?

Hey, is there a Gradle plugin/task to publish an iOS framework to a private repo? If not, which other way to handle framework distribution?

Hmmmm my ios app can't see default implementations on interface methods on kotlin. Anyone seen that as well?

Which kotlin/js compiler should I choose? LEGACY or IR

Hi Need inputs on the folllowing 1. Can we disable tests for a particular platform from commonTest, like disable for js platform 2. Any way to get it running for JS platform for the given error

Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':database:jsBrowserTest'.
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:145)
	at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:282)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:143)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:131)
	at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
	at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
	at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
	at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
	at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
	at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
	at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
	at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
	at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:74)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:402)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:389)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:382)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:368)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)
	at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:61)
Caused by: java.util.NoSuchElementException: No value present

I'm trying to port a Kotlin lib (the module is called

sdk

in the project) to iOS. When I run

./gradlew build

the

compileKotlinMetadata

step fails. How can I fix this please? (I've moved the CLI output into the thread)

Hi all, what do you recommend as a good testing framework for a kmm mobile app

I'm trying to export a class with an array, something like this

class Foo<T>(val array: Array<T>)

but when I annotate with

@JsExport

I get the warning saying Array is not exportable, but the docs seem to suggest otherwise. error:

Exported declaration uses non-exportable property type: Array<T>

docs: https://kotlinlang.org/docs/js-to-kotlin-interop.html#kotlin-types-in-javascript

I'm looking to make a multiplatform Uri parsing library. I see 3 options for doing so. I have a feeling any one of them are ok, but is one "better" than the rest? 1. Write an RFC compliant implementation from scratch (I started doing this but I realized I'd run out of time that I allocated for this project) 2. Use expect/actual and delegate to platform functionality; Android

Uri

, JS

URL

, iOS

swift-URI

, Native haven't found anything yet (all the implementations have slightly different behavior + I haven't found a simple solution for native) 3. Port an existing implementation to KMP I've started all 3 approaches, and I'm leaning towards #3, and porting Android

Uri

This message was deleted.

In my MPP app I'm trying to create an

NSDecimal

from a

String

. However I'm not sure how to as the

NSDecimal

constructor only takes a

NativePtr

argument. Can someone tell me how to do this please? 😄

Are there plans from JetBrains for a multiplatform crypto library? Iirc it was one of the most upvoted features here in slack, when someone from JetBrains asked for missing features.

Using Kotlin 1.6.21 I'm adding dependencies to my

commonMain

source set, but Intellij 2022.1 can't resolve them (building via command line works fine). Android Studio Bumblebee works fine. Is that expected?

How should I go about publishing a multiplatform native library? Github actions is building them, but since they all have the name "native" it seems to cause some conflicts when publishing to maven, any ideas? I tried changing it to build all 3 but then it refuses to commonize properly and I'm afraid of that causing issues when publishing

So I’m trying to export

Map

types to JS so I added a

MapWrapper<K, V> : Map<K, V

that is `@JsExport`ed. But even if I manually override the method they still don’t end up in the typescript definitions. It seems that all functions that are declared in a non exported interface are not included in the export. Does anyone know of a workaround?

One of my tests is failing on

myproject:iosX64Test

iosX64 target but is passing on

myproject:iosSimulatorArm64Test

. How could I find the reason for this happening? Does anything to do with the fact I am using an Arm64 chip (Apple M1)?

How do I build a project with cinterops for multiple platforms? adding cinterops to all targets results in it failing to build cinterops for windows on linux (build.gradle.kts and error log in thread)

I’m having a hard time transitioning a working KMP project from

embedAndSignAppleFrameworkForXcode

to cocoapods ( following docs at: https://kotlinlang.org/docs/native-cocoapods-xcode.html ). Whenever I try to launch the iosApp (both from within Android Studio and Xcode) it fails with:

ld: framework not found Pods_iosApp

. It seems the linker cannot find the framework generated by cocoapods? Any idea how to debug this?

Hard to say without looking at it. It’s an xcode/build thing rather than a Kotlin-specific thing, though. First to try is check which file you have opened in Xcode. I’d close Xcode, and make sure you open the

*.xcworkspace

rather than

*.xcodeproj

. When you use cocoapods, you need to open a different project file. I don’t know that AS would still be failing, though (not sure how the plugin picks project configs, and I use Xcode most of the time)