kotlinlang #multiplatform

e: Compilation failed: The /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ command returned non-zero exit code: 1. output: error: Invalid record (Producer: 'LLVM8.0.0svn' Reader: 'LLVM APPLE_1_1103.0.32.62_0') 1 error generated.

tylerwilson

09/23/2020, 1:22 PM

Anybody have a better solution for this: I have a MPP library for Andoird/iOS, using Cocoapods to hook into my Xcode project. If they framework is not already built when I do ‘pod update’ then the Xcode build will fail. I then need to quit, run pod update again and then load the project again. There ought to be a better way…

thalescm

09/23/2020, 3:29 PM

I can’t see what could be wrong in the configuration, but the IDE (and also at runtime) it seems it is misconfigured somehow

thalescm

09/23/2020, 3:35 PM

gradle version: 6.6.1 kt version: 1.4.10

John Gainfort

09/23/2020, 6:48 PM

or is it safe to say, this is just not ready yet

John Gainfort

09/23/2020, 6:49 PM

and I should just import the library for now using

implementation(project(":cmcd"))

Pandu

09/24/2020, 1:28 AM

Hey guys, new to KMM and looking at using it with GQL, has anyone here have any good experiences or any recommendations ? mainly concerned how it will work with iOS as we are planning to use SwiftUI

Christian Jensen

09/25/2020, 6:18 AM

Hi. I am trying to make a multiplatform project to be shared among, Android, iOS and Javascript. Are there any samples out there (updated to Kotlin 1.4.0)? I am struggling to make the library visible from Javascript. I am trying this approach but not sure how to access kotlin.js (to use e.g.

@JsExport

) from multiplatform, so a sample would be nice...

Vinod Rai

09/25/2020, 9:38 AM

Hey, I am developing a multiplatform project targetting iOS & android. How to generate a working android jar file from the shared code? when I include shared code as a module in the android project it works fine but when I include generated android jar file as a library in android it throws an error when I run the app.

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Caused by: java.lang.ClassNotFoundException: Didn't find class "kotlinx.serialization.json.Json Kt"

Paulius Ruminas

09/25/2020, 11:02 AM

Hello, is there a way to get a KClass<*> object from string? In JVM we can do

Class.forName(A::class.java.name).kotlin

but I wonder if there is a multiplatform solution.

Vinod Rai

09/25/2020, 12:39 PM

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Exception in thread "main" kotlinx.serialization.SerializationException: Serializer for class 'Repository' is not found. Mark the class as @Serializable or provide the serializer explicitly.

Already all data classes marked @Serializable, getting this error in android when calling API implemented in the multiplatform library.

Evan

09/25/2020, 9:17 PM

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HttpClient: -> Cache-Control: no-store, no-cache, max-age=0
HttpClient: -> Content-Type: application/json
HttpClient: -> Date: Fri, 25 Sep 2020 01:32:40 GMT
HttpClient: -> Pragma: no-cache
HttpClient: -> Server: Kestrel
HttpClient: -> Transfer-Encoding: Identity
HttpClient: BODY Content-Type: application/json
HttpClient: BODY START
Uncaught Kotlin exception: kotlinx.coroutines.CoroutinesInternalError: Fatal exception in coroutines machinery for DispatchedContinuation[MainDispatcher, Continuation @ $split$lambda-0$<anonymous>_3COROUTINE$2]. Please read KDoc to 'handleFatalException' method and report this incident to maintainers
    at 0   companySharedSampleApplication         0x00000001009aa97c kfun:kotlin.Error#<init>(kotlin.String?;kotlin.Throwable?){} + 124 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Exceptions.kt:14:63)
    at 1   companySharedSampleApplication         0x0000000100b23d6c kfun:kotlinx.coroutines.CoroutinesInternalError#<init>(kotlin.String;kotlin.Throwable){} + 124 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Exceptions.common.kt:28:77)
    at 2   companySharedSampleApplication         0x0000000100b72019 kfun:kotlinx.coroutines.DispatchedTask#handleFatalException(kotlin.Throwable?;kotlin.Throwable?){} + 953 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:93:22)
    at 3   companySharedSampleApplication         0x0000000100b71bf7 kfun:kotlinx.coroutines.DispatchedTask#run(){} + 3543 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:64:13)
    at 4   companySharedSampleApplication         0x0000000100ba96d8 kfun:kotlinx.coroutines.DarwinMainDispatcher.dispatch$lambda-0#internal + 88 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:35:19)
    at 5   companySharedSampleApplication         0x0000000100ba9aae kfun:kotlinx.coroutines.DarwinMainDispatcher.$dispatch$lambda-0$FUNCTION_REFERENCE$41.invoke#internal + 62 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:34:51)
    at 6   companySharedSampleApplication         0x0000000100ba9b0e kfun:kotlinx.coroutines.DarwinMainDispatcher.$dispatch$lambda-0$FUNCTION_REFERENCE$41.$<bridge-UNN>invoke(){}#internal + 62 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:34:51)
    at 7   companySharedSampleApplication         0x0000000100baabc7 _6f72672e6a6574627261696e732e6b6f746c696e783a6b6f746c696e782d636f726f7574696e65732d636f7265_knbridge8 + 183 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:34:51)
    at 8   libdispatch.dylib                   0x00000001016858ac _dispatch_call_block_and_release + 12
    at 9   libdispatch.dylib                   0x0000000101686a88 _dispatch_client_callout + 8
    at 10  libdispatch.dylib                   0x0000000101694f23 _dispatch_main_queue_callback_4CF + 1152
    at 11  CoreFoundation                      0x00007fff203a8276 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
    at 12  CoreFoundation                      0x00007fff203a2b06 __CFRunLoopRun + 2685
    at 13  CoreFoundation                      0x00007fff203a1b9e CFRunLoopRunSpecific + 567
    at 14  GraphicsServices                    0x00007fff2b773db3 GSEventRunModal + 139
    at 15  UIKitCore                           0x00007fff24660af3 -[UIApplication _run] + 912
    at 16  UIKitCore                           0x00007fff24665a04 UIApplicationMain + 101
    at 17  iosSampleApp                        0x000000010068b74b main + 75 (/Users/ep/workspace/company-multiplatform/company-kmm-sdk/iosSampleApplication/iosApp/AppDelegate.swift:6:7)
    at 18  libdyld.dylib                       0x00007fff20257415 start + 1
Caused by: kotlinx.coroutines.CompletionHandlerException: Exception in completion handler ChildCompletion[ChildHandle[DeferredCoroutine{Cancelled}@326b548], kotlin.Unit] for DeferredCoroutine{Cancelled}@326b548
    at 0   companySharedSampleApplication         0x00000001009aab3c kfun:kotlin.Exception#<init>(kotlin.String?;kotlin.Throwable?){} + 124 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Exceptions.kt:25:63)
    at 1   companySharedSampleApplication         0x00000001009aad8c kfun:kotlin.RuntimeException#<init>(kotlin.String?;kotlin.Throwable?){} + 124 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Exceptions.kt:36:63)
    at 2   companySharedSampleApplication         0x0000000100b23ccc kfun:kotlinx.coroutines.CompletionHandlerException#<init>(kotlin.String;kotlin.Throwable){} + 124 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Exceptions.common.kt:13:78)
    at 3   companySharedSampleApplication         0x0000000100b29a36 kfun:kotlinx.coroutines.JobSupport.notifyCompletion#internal + 1606 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:365:9)
    at 4   companySharedSampleApplication         0x0000000100b28668 kfun:kotlinx.coroutines.JobSupport.completeStateFinalization#internal + 1464 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:326:25)
    at 5   companySharedSampleApplication         0x0000000100b267f9 kfun:kotlinx.coroutines.JobSupport.finalizeFinishingState#internal + 1705 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:241:9)
    at 6   companySharedSampleApplication         0x0000000100b33704 kfun:kotlinx.coroutines.JobSupport.tryMakeCompletingSlowPath#internal + 2036 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:922:16)
    at 7   companySharedSampleApplication         0x0000000100b32de0 kfun:kotlinx.coroutines.JobSupport.tryMakeCompleting#internal + 736 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:875:16)
    at 8   companySharedSampleApplication         0x0000000100b32802 kfun:kotlinx.coroutines.JobSupport#makeCompletcompanynce(kotlin.Any?){}kotlin.Any? + 642 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/JobSupport.kt:840:30)
    at 9   companySharedSampleApplication         0x0000000100b053d6 kfun:kotlinx.coroutines.AbstractCoroutine#resumeWith(kotlin.Result<1:0>){} + 310 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/AbstractCoroutine.kt:111:21)
    at 10  companySharedSampleApplication         0x00000001009d396a kfun:kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(kotlin.Result<kotlin.Any?>){} + 1450 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:43:32)
    at 11  companySharedSampleApplication         0x0000000100b716d8 kfun:kotlinx.coroutines.DispatchedTask#run(){} + 2232 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:53:21)
    at 12  companySharedSampleApplication         0x0000000100ba96d8 kfun:kotlinx.coroutines.DarwinMainDispatcher.dispatch$lambda-0#internal + 88 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:35:19)
    ... and 14 more common stack frames skipped
Caused by: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen kotlinx.coroutines.AwaitAll.AwaitAllNode@1f33078
    at 0   companySharedSampleApplication         0x00000001009b1d4d kfun:kotlin.Throwable#<init>(kotlin.String?){} + 93 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Throwable.kt:23:37)
    at 1   companySharedSampleApplication         0x00000001009aaa8b kfun:kotlin.Exception#<init>(kotlin.String?){} + 91 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Exceptions.kt:23:44)
    at 2   companySharedSampleApplication         0x00000001009aacdb kfun:kotlin.RuntimeException#<init>(kotlin.String?){} + 91 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/Exceptions.kt:34:44)
    at 3   companySharedSampleApplication         0x00000001009e092b kfun:kotlin.native.concurrent.InvalidMutabilityException#<init>(kotlin.String){} + 91 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/native/concurrent/Freezing.kt:22:60)
    at 4   companySharedSampleApplication         0x00000001009e21e2 ThrowInvalidMutabilityException + 690 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/native/concurrent/Internal.kt:92:11)
    at 5   companySharedSampleApplication         0x0000000100adb91c MutationCheck + 108
    at 6   companySharedSampleApplication         0x0000000100b07a26 kfun:kotlinx.coroutines.AwaitAll.AwaitAllNode.<set-handle>#internal + 102 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Await.kt:94:18)
    at 7   companySharedSampleApplication         0x0000000100b06bf8 kfun:kotlinx.coroutines.AwaitAll.await#internal + 1240 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Await.kt:68:17)
    at 8   companySharedSampleApplication         0x0000000100b06161 kfun:kotlinx.coroutines.$awaitAllCOROUTINE$1#invokeSuspend(kotlin.Result<kotlin.Any?>){}kotlin.Any? + 1425 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Await.kt:38:62)
    at 9   companySharedSampleApplication         0x0000000100b06434 kfun:kotlinx.coroutines#awaitAll@kotlin.collections.Collection<kotlinx.coroutines.Deferred<0:0>>(){0§<kotlin.Any?>}kotlin.collections.List<0:0> + 244 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/Await.kt:37:16)
    at 10  companySharedSampleApplication         0x0000000100c92a56 kfun:io.ktor.util.$split$lambda-0COROUTINE$3.invokeSuspend#internal + 2358 (/opt/buildAgent/work/a85294440dc5c6e/ktor-utils/common/src/io/ktor/util/ByteChannels.kt:29:23)
    at 11  companySharedSampleApplication         0x00000001009d36b6 kfun:kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(kotlin.Result<kotlin.Any?>){} + 758 (/Users/teamcity/buildAgent/work/cae0e6559deed4c4/runtime/src/main/kotlin/kotlin/coroutines/ContinuationImpl.kt:30:39)
    at 12  companySharedSampleApplication         0x0000000100b71912 kfun:kotlinx.coroutines.DispatchedTask#run(){} + 2802 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt:39:50)
    at 13  companySharedSampleApplication         0x0000000100ba96d8 kfun:kotlinx.coroutines.DarwinMainDispatcher.dispatch$lambda-0#internal + 88 (/opt/buildAgent/work/44ec6e850d5c63f0/kotlinx-coroutines-core/nativeDarwin/src/Dispatchers.kt:35:19)

myrronth

09/27/2020, 8:49 AM

Seems like if posted in the wrong channel 🙂 Could anyone help me out?

andylamax

09/28/2020, 3:29 AM

Is there a KMP lib for dealing with JWT?

faogustavo

09/29/2020, 6:56 PM

Hey guys, how is everything? I’m starting studying kotlin multiplatform, and for that, I am developing a library that implement the flux architecture on top of coroutine (https://github.com/faogustavo/fluks). I still need to make it better, but already have something to start going deeper. I’m confused with some points and will post some questions down here. Sorry for flooding the channel 😅

streetsofboston

09/29/2020, 8:54 PM

With help from all you folks in this thread - thank you! - I managed to fix it as follows: First get rid of the red-lines in the IDE, by changing

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ios()

into

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val onPhone = System.getenv("SDK_NAME")?.startsWith("iphoneos") ?: false
    if (onPhone) {
        iosArm64("ios")
    } else {
        iosX64("ios")
    }

However, this causes the

packForXcode

task configuration to fail because of this expression:

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kotlin.targets.getByName<KotlinNativeTarget>(targetName).binaries.getFramework(mode)

To fix this, change the above expression to:

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kotlin.targets.getByName<KotlinNativeTarget>("ios").binaries.getFramework(mode)

After this, you may get red-lines in the

commonMain

source-set. To fix this, disable setting the

enableGranularSourceSetsMetadata

in your

gradle.properties

, like this:

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...
#kotlin.mpp.enableGranularSourceSetsMetadata=true
kotlin.native.enableDependencyPropagation=false

KamilH

10/02/2020, 8:29 AM

I did additional checks and I found out that when in the project I have

android

target then in the

jvm

main function I’m getting this error above. When I’m creating a new project with exactly the same configuration, but without

android

target it’s working properly, main function compiles and it is printing a message Any guess what is causing this problem?

KamilH

10/02/2020, 11:12 AM

As a temporary workaround I decided to comment-out android specific stuff in my

build.gradle

file and try to compile. I commented following lines:

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id(com.android.library)
id(kotlin-android-extensions)

kotlin { android() }

val androidMain by getting
val androidTest by getting

android { }

and after that my

jvmMain

main function works. I think it is some kind of bug, right? Where can I report this?

Sourabh Rawat

10/02/2020, 11:51 AM

adding

id("com.android.library")

removes all my other sourcesets 😕

darkmoon_uk

10/04/2020, 11:18 AM

..I guess that because an inline class is not a true class at Runtime, the static component of Android's Parcelable scheme cannot apply.

darkmoon_uk

10/04/2020, 11:21 AM

Any ideas to work around this?

mbonnin

10/05/2020, 9:48 AM

Can a HMPP project include non-HMPP dependencies? I just bumped into https://github.com/cashapp/sqldelight/issues/1992 which has been closed but I feel like it shouldn't be?

zeugederunity

10/05/2020, 9:53 AM

Hello everyone, how do you handle the array-kclass problem when you use code like this in your commons library that is shared between JVM and JS?

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inline fun <reified T> T.call(block: (T)->Unit){
    if (T::class == Array::class){
        error("This is an array")
    }
    block(this)
}

I found the issue regarding that problem, but i dont know if implementing that workaround

isArray

like mentioned in the issue is still the way to go. https://youtrack.jetbrains.com/issue/KT-32839 My implementation of the workaround looks like this:

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// Commons
expect val KClass<*>.isArray: Boolean
// JS
actual val KClass<*>.isArray: Boolean get() = this == Array::class
// JVM
actual val KClass<*>.isArray: Boolean get() = java.isArray

joney

10/05/2020, 1:21 PM

Edit: Was missing the
binaries { }
block in
ios { }

packForXcode

fails with

Key debugFramework is missing in the map

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val framework = kotlin.targets.getByName<KotlinNativeTarget>(targetName).binaries.getFramework(mode)

Any Idea what I could be doing wrong?

👀 1

✔️ 1

rocketraman

10/05/2020, 2:02 PM

@Daniele B Shout-out for your post!! It, and the other comments in this thread, got me started in the right direction. Combining your pattern with

CFlow

mentioned above from the Kotlin MPP conference app for properly closing the job associated with reading the

StateFlow

, and Kodein for injecting the shared view model into both Android and Swift code, and I've successfully gotten an MPP app with iOS and Android views driven by

StateFlow

working!

Tijl

10/05/2020, 3:07 PM

combined with kotlin 1.4.10 and Studio 4.1-RC3 debugging `iosTest`s now works for me 🥳

🎉 3

etolstoy

10/06/2020, 4:20 PM

set the channel topic: Discuss multiplatform projects, an alpha feature introduced in 1.2

👍 3

Tobi

10/08/2020, 2:28 PM

I could figure that one out and and have a working prototype for Android 💯 On iOS I am running into a

Thread 1: EXC_BAD_ACCESS (code=1, address=0x5fff89815c80)

, somewhere in the ktor coroutines stack. My code so far is fairly simple:

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class DoSomeWork(
    private val domainUrl: String,
    private val ktorClient: HttpClient,
    private val onResponse: (Response) -> Unit = {_ ->}
) {
    private val scope = MainScope()

    operator fun invoke() {
        scope.launch {
            val response: Response = <http://ktorClient.post|ktorClient.post>(domainUrl) {
               // . . .
            }

            onResponse(response)
        }
    }

    companion object {
        val json = Json {
            encodeDefaults = false
            ignoreUnknownKeys = true
        }
    }
}

Any idea what could be the reason?

Kavita

10/09/2020, 5:10 PM

Hello @here, I am not able to configure the template for iOS Application in my Kotlin Multiplatform project. I have all below plugins installed: Android Studio: 4.1 RC 3, Kotlin: 1.4.0-release-Studio4.1-1 Kotlin Multiplatform: 0.1.3-release-54-Studio4.1 Xcode: 11.3 Xcode Command Line Tool: 11.3 How to run the iOS app in Kotlin Multiplatform project? Did I miss anything?