Using 'IOException' is an error. These classes accidentally slipped to the public API surface. We neither had intent to provide a production-quality implementation nor have an intent to support them.They are removed and to migrate, you can either use a corresponding java.io type or just a copy-paste implementation from the GitHub.If you have a use-case for multiplatform IO, please report it to the https://github.com/Kotlin/kotlinx-io/issues

The

multiplatform

plugin seems to get confused by Android flavor source sets with expect / actual. i.e. I have an expected declaration inside of

src/commonMain

, and then for Android I have actual declarations inside of

src/internal

and

src/production

(the folders for Android Flavors). I’m seeing the following error:

Actual object <class name> has no corresponding `expected` declaration.

Redeclaration <class name>

Does anyone know of a solution? The error is only in the IDE. The app compiles fine.

Hi 🙂 I tried 1.4-M1 with the new js ir backend this week and I realized, that the

@JsExport

annotation is throwning a wrench into my project. Maybe you folks have an idea on how to do this correctly? My goal is to have a Kotlin common sorce set, which should be compiled to js and jvm. This will be a common library, that will be used by the frontend (React with TypeScript) and the backend (Spring Boot with Kotlin) and will contain common data structures, validation logic and some particularly complex bits of business logic that need to be executed on both platforms. Now my train of thought was to just implement all of this in the commonMain source set and leave the jsMain and jvmMain source sets empty. This works fine for the jvm target: I get a .jar file with all the classes and functions defined in the common code. But for js, everything that should be exported needs to be annotated with

@JsExport

for it to actually being compiled to js. Does this mean I have to populate the jsMain source set with a wrapper for each class and function that exists in commonMain, just to be able to compile this to js? This does not sound very pragmatic. is there maybe a way to tell the compiler to always export classes and functions from a certain package?

What's the recommended way to publish multiplatform libraries to

bintray

these days ? For regular JVM projects, I'm able to publish with

maven-publish

by using the bintray API and

<https://api.bintray.com/maven/subject/repo/package>

as url but this doesn't work anymore on multiplatform projects since a project (in the gradle meaning) will have multiple packages (in the Bintray meaning), one for each arch.

What do people usually do for dependency injection on the Swift/iOS side of Multiplatform projects (or js for that matter)? I've tried Kodein but manually binding everything for constructor injection was a chore to say the least.

damnit. sqldelight hasn't updated for 1.3.7x. i was so close to getting everything updated!!

@Kris Wong I too feel your pain. Library incompatibility between versions is proving to be far more painful than I expected.

i have one project in which IDEA seems to run my

fatFramework

task every time it reimports the gradle files. it's so strange

I frequently get this error message in my multi module project. Error goes away after I clean the project. Really annoying.

Testing out 1.4-M1 I'am getting the following exception in the compiler during compileKotlinJs:

e: java.lang.RuntimeException: No INDEXED_LVALUE_GET for ARRAY_ACCESS_EXPRESSION: KtParenthesizedExpression:

Anyone know what causes this?

I'm creating a Kotlin Library. If I want this library to have multiplatform support. Do I need any specific configuration or is it fine to just make sure that all libraries that I use do have multiplatform support? like coroutines?

Is any one using gitlab packages with kotlin multi platform? I'm getting a fringe bug where the

version

becomes the

artifactId

and the

version

becomes

null

. The same upload works on sonatype nexus

Hey team, I’m trying to run first time multiplatfrom Kotlin app. I’ve created project from idea template, but it fails with the following error:

org.jetbrains.kotlin.konan.MissingXcodeException: An error occurred during an xcrun execution. Make sure that Xcode and its command line tools are properly installed.

Besides at the same time I’m able to compile and run it from Xcode What could be configured wrong?

So it looks like it only runs the common tests on iOS instead of also on JVM. Any ideas what needs to be reconfigured in order to get the platform-picker menu for the iOS/Android project?

wwhat css dsl should I use for a multiplatform project with ktor jvm and kotlin js/HTML? I heard kotlinx.css was discontinued, wondering why I am bothering with kotlinx.html if that's the case

My god there is so many web frameworks already... kotlin react, kvision, kotlinx, ktor, mutliplatform primatives, this is all too much to choose from, lol... been playing with kotlin-react, seems okay except it isn't honoring my exernal css and js like metro4 package. is kvision any good, which would you use? and another https://github.com/Kabbura/Kunafa!!!! I was using kotlinx html fairly reliably once I figure it out but it was making bigger code than kotlin-react. The reason I am considering switching is because it lacks a CSS DSL.

Hi, are Kotlin 1.3.70 and 1.3.71 binary compatible? I see that

kotlinx.serialization

was build with 1.3.70 so can I use it with 1.3.71?

Hi all, I’ve been trying to add an Android library to my Android/iOS multiplatform project, but I’m getting the error

Default interface methods are only supported starting with Android N (--min-api 24)

Been looking around, and it seems I have to set the

sourceCompatibility

and

targetCompatability

in

compileOptions

.. it’s just that I don’t know where to do that, as the

android { … }

closure is not found. Using kotlin gradle btw.

anyone has any experience working with JFrog Artifactory? I’m generating and publishing to a local repo but I can’t seem to be able to use the lib on another project. The problem I’m facing is that the aar is published but on my other project, I can’t use the code anywhere, and on my external libraries, I can only see: Gradle: com.christiansousa.lib:MyLib -> classes.jar but inside it there’s only:

MyLib-release.kotlin_module

and not any of the classes. Sorry if it’s not the right place to ask this but since I can only see the

*.kotlin_module

on my External Libraries I thought this would be the best place to ask.

Is there any kind of roadmap for Kotlin Multiplatform? Is here any place where I can see what is the current state of the project (for example what is implemented, what needs improvement, what are a risk etc.)? In my company we are looking for a best Multiplatform solution to invest in near future and as we are mobile agency with a lot of experience in native Android/iOS, the most logical stap would be Kotlin Multiplatform, but we would like to understand a risks

I’m seeing an exception working with Flow across threads in Kotlin/native using the

native-mt

version of kotlinx.coroutines. I’ve been stuck on this for a while now. Can anyone point me in the right direction for how to fix this? It’s throwing an error on the

emit(defaultValue)

.

Caused by: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen kotlinx.coroutines.flow.internal.SafeCollector@f506be8

Hi, I've encountered a weird error while upgrading my KMP library to Kotlin 1.3.71. My lib consists of two modules, one is core KMP lib, and the other is a Gradle plugin. When I try to execute test cases for the Gradle plugin, one of these throws an error like

e: Could not find "kotlinx-serialization-runtime" in [/Users/yshrsmz/repos/github.com/yshrsmz/kgql, /Users/yshrsmz/.konan/klib, /Users/a12897/.konan/kotlin-native-macos-1.3.71/klib/common, /Users/yshrsmz/.konan/kotlin-native-macos-1.3.71/klib/platform/ios_x64].

Here's the repo https://github.com/yshrsmz/kgql/tree/kotlin1.3.71-builderror If you run

$ ./gradlew build

at the root directory,

The generate task is a dependency of multiplatform ios target - X64

test fails. https://github.com/yshrsmz/kgql/blob/kotlin1.3.71-builderror/kgql-gradle-plugin/src/test/kotlin/com/codingfeline/kgql/gradle/KgqlPluginTest.kt#L166-L181 The weirdest part is, this test some time passes. It fails almost all the time, but sometimes it succeeds.

Hi, our team have been trying to setup kotlin multiplatform for a month now, and everything seems to be going well from calling mpp code from android. However our iOS dev just build our mpp codebase and says that the compiled code from kotlin mpp is objective c instead of swift, and although our iOS repo swift code swift can call the compiled mpp objective c, it misses some features compared to something that was written in Swift. An example he gave me is that NSMutableArray is being created for MutableList instead of a regular swift typed array. Is there something we miss in our configuration, since I assume most of the people use Swift on iOS side?

Hey! Is it currently possible to test callbacks in

commonTest

?

Hello everyone. Does anyone have any guides for extending the kotlin multiplatform

cocoapods

plugin such that it publishes the compiled

.framework

file to a (private) remote repo? My goal is to be able to consume the

.framework

file remotely instead of from the local file system. I've seen some examples on the cocoapods website but most of the examples talk about publishing the source (looks like cocoapods builds the framework from source). This is not what I want.

For Interoperability, do I only need to do:

kotlin {
    cocoapods {
        // Configure a dependency on AFNetworking.
        // The CocoaPods version notation is supported.
        // The dependency will be added to all macOS and iOS targets.
        pod("AFNetworking", "~> 3.2.0")
    }
}

? Because I did that and then on my ios part I cant import it because it says that AFNetworking is an unresolved reference

can i add custom java source dirs for a

jvm { withJava() }

target?

For the default setup what should the classpath be in this case?

jvm() {
    compilations {
        val main by getting
        tasks {
            register<JavaExec>("run") {
                setMain("com.project.MainAppKt")
                println(main.output.classesDirs)
                classpath = main.output.classesDirs
            }
        }
    }
}

Bringing this out of the 11day old thread in case anyone else can help?

Hello guys, can anyone give me some help regarding the 

moko-resources

 ? I’m trying to build my project but it always gives me the following: 

Object 'MR' has several compatible actual declarations in modules...

  It seems that it’s generating code for iosx64 and iosarm64. Anyone had a problem like this?