So....is there a Kotlin equivalent to System?

Hello, I am trying to use cocoapods by following this documentation: https://kotlinlang.org/docs/reference/native/cocoapods.html But I am encountering the following error. Do you have an idea of what I could be missing? I use the version

1.4.21

, with

kotlin {
    android()
    ios()

    cocoapods {
        summary = "summary"
        homepage = "homepage"

        pod("AFNetworking") {
            version = "~> 4.0.1"
        }
    }
// ...

As I am using ktor client for networking, is there a way to directly get the call executed inside a Kotlin Flow or, even better, StateFlow?

After reading a bit, I found out that runBlocking is only available for JVM. Can I assume that await() is also JVM only? If so, how do I refactor my code to maintain the same behavior? Thanks!

Does anyone know how I can resolve an issue running

pod lib lint

on the podspec for a kotlin native mpp project? I have the framework built in the

build/cocoapods/framework

folder successfully. I'm looking to deploy it to our private pod repo. I run

pod lib lint

on the podspec and it errors out at:

- ERROR | xcodebuild: Returned an unsuccessful exit code.

/bin/sh -c /Users/kevinskrei/Library/Developer/Xcode/DerivedData/App-bvyatnpkzbcdlihdrsoatdifsqvt/Build/Intermediates.noindex/Pods.build/Release-watchsimulator/arccosAbShared.build/Script-46EB2E000002E0.sh
                    REPO_ROOT="$PODS_TARGET_SRCROOT"
                    "$REPO_ROOT/../gradlew" -p "$REPO_ROOT" :shared:syncFramework                     -Pkotlin.native.cocoapods.target=$KOTLIN_TARGET                     -Pkotlin.native.cocoapods.configuration=$CONFIGURATION                     -Pkotlin.native.cocoapods.cflags="$OTHER_CFLAGS"                     -Pkotlin.native.cocoapods.paths.headers="$HEADER_SEARCH_PATHS"                     -Pkotlin.native.cocoapods.paths.frameworks="$FRAMEWORK_SEARCH_PATHS"
    
    FAILURE: Build failed with an exception.
    
    * What went wrong:
    Gradle could not start your build.
    > Could not create service of type CrossBuildFileHashCache using BuildSessionServices.createCrossBuildFileHashCache().
       > Failed to create parent directory '/.gradle' when creating directory '/.gradle/6.4.1/fileHashes'

Has anyone run into this before when trying to publish a pod? This is using the pod spec from the cocoapods plugin

Hi folks! Is anyone here using a "Debug iOS application" feature of KMM plugin for Android Studio ? Could someone check if it works okay please? In my case, a simulator doesn't even launch - only the empty "Run" tab shows up macOS 11.1 beta, Simulator 12.2

Hi, what do you think can be the cause when there is no more autocompletion in the shared module of a KMM project? And once in the Android tab, only the java(generated) folder appears

I have a Kotlin/JS project with Kotlin/MPP subproject (JS/JVM). When I run

./gradlew test

only JS tests are executed from the main project and subprojects. I can run

./gradlew jvmTest

to run JVM tests from the MPP subproject, but how can I run all tests with a single

test

task?

Hi all 👋 I'm trying to publish a lib and I noticed that some jars are missing - common is missing sources.jar and native only has sources jar. Is this some limitation of kotlin mpp or am I doing something wrong? Here's the build file just in case: https://github.com/serpro69/todo-or-die/blob/master/build.gradle.kts Thanks.

I'm using Touchlab's CrashKiOS to try to view my crashes happening in the KMM module, I'm still not able to view the actual crashes and the stack trace I see on the portal is from Xcode only, i.e., till the KMM interface visible in Xcode. I've located all the dSYMs in the system and added them to the upload script. I'm using the latest version for Crashlytics, i.e., Firebase Crashlytics for the same.

Hi All, i would appreciate your comments on my dev.to post before I publish. Feel free to reply here or to PM me. Thanks alot. https://dev.to/uluckas/the-future-of-cross-platform-development-kotlin-multiplat[…]7a586399465a9ca6bd43456a6ee942998c3b783a6a94f37aa6910541dee0b49b2 I hope this is the right channel. If not, please let me know.

In my Decompose library, I see that starting from Kotlin version

1.4.20

the

maven-publish

plugin uploads

jar

files for root packages (named without any a suffix). But there is no

sources.jar

uploaded. As a result I can't enable JCenter sync, since sources are mandatory for packages with

jars

. E.g. this package has a

jar

file but does not have

sources.jar

file: https://dl.bintray.com/arkivanov/maven/com/arkivanov/decompose/decompose/0.1.4/ But e.g. this coroutines package has everything: https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.4.2/ Questions: 1. Why there is no

jar

files uploaded for this package prior to Kotlin 1.4.20? (e.g. here). If there is no

jar

then it's ok to not have

sources.jar

. 2. Why there is no

sources.jar

uploaded in this case. Sources are uploaded fine for other non-root packages, e.g. the decompose-jvm.

Is there a way to have concurrentHashMaps in Kotlin Native? I tried wrapping MutableMap in AtomicReference but that doesn't look like a good solution to me as there are cases in which it might not work

Hi regarding https://youtrack.jetbrains.com/issue/KT-43237, are there more people affected? In our case we need to do a somewhat orthodox workaround renaming the imports to the affects js libs. “KJS:

-jsLegacy

Naming Convention is incompatible with NPM Libraries such as 

kotlinx.serialization

 are exporting artifacts with a 

-jsLegacy

 suffix when using the legacy compiler with Kotlin 1.4. NPM however, doesn’t allow capital letters in package names.”

Hi! Does anyone know if there is a way to implement this idea https://github.com/JetBrains/kotlin-native/issues/2423#issuecomment-491252243 ? Like to have a multiplatform module built into a set of frameworks (one for each api dependency)

Anyone facing this error when updating multiplatform project to: Android Studio Artic Fox | 2020.3.1 Canary 3 Gradle version: gradle-6.8-rc-4-bin.zip Gradle plugin: 7.0.0-alpha03

A problem occurred configuring project ':shared'.
> Configuration with name 'testApi' not found.

* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.api.ProjectConfigurationException: A problem occurred configuring project ':shared'.
	at..........

Hi all, I am a Kotlin beginner and I decided to play a little bit around with Kotlin Multiplatform. I am looking for a way to version a shared module - so I started think about using jfrog artifactory for that purpose. Did anyone of you already upload a Kotlin Multiplatform shared module to artifactory an consume it from there?

Hey, I want to use the kotlin multiplatform plugin for gradle within a precompiled plugin (inside of the buildSrc folder) - but it does not work. Does this really just not work or is there a problem inside of my gradle script files?

I am working on a library using KMP.

KClass.objectInstance

doesn't seem to be available on JS or Native, only JVM. Are there any workarounds or libraries that I can use with expext/actual to accomplish something similar to

T::class.objectInstance

Hi I am learning KMM and got confused how to set our base url in our shared module according to the build variants(development, production etc). I can't access

BuildConfig

which we have in out android projects.

Hello 👋 I have two questions • is there any example of having color resources in

common

? And share it between Android and iOS? also supporting Dark/Light mode ?

Second one, • is there any example of having images(.png) and vector drawables (.xml) in

common

and sharing across platforms ?

Heyoo! I'm dabbling for the first time in multiplatform with web and jvm in a fullstack web app. If followed the hands on tutorial but adapted it to my needs, so now I have a very basic project with React. I'd like to use the https://material-ui.com framework for the layout. Is there anyone that has managed to do this? 😊

I have a Multiplatform Project (js, jvm, native). What is the best approach if I want to have tests for common code? Can I configure common-test to run tests on the JVM, or should I put all of that inside the jvmTest module? Is there any good "optimal solution" example on github that I can follow?

Hi, can someone suggest with freeze() method. Is it a bug or I do something wrong: I create instance of Kotlin data class from Swift. Then I pass this instance to Kotlin code, where I call freeze() for passing it to another thread. Per documentation freeze() should freeze this instance and its subgraph. But I found that It freezes only itself. Subgraph stays untouched and not frozen. Example:

data class Foo(val bars: List<Bar>)

// create instance of Foo with bars on Swift side and pass it to some Kotlin Multiplatform class where I call
foo.freeze()
// now I expect that bars are frozen, but they are not
// as a workaround I use
foo.bars.forEach { it.freeze() }

When I do the same purely in Kotlin - everything works as expected, instance of Foo is frozen and all its properties

Hi, does anyone know how to fix running the iOS simulator from Android Studio canary (latest version), it’s able to build the iOS app just fine, but it doesnt bring up the simulator, just stuck on the

Run

tab. I’m able to run the app from Xcode just fine too.

I have tried to use KTor for a KMM (Kotlin Multiplatform Mobile) project but the shared module (commonMain) doesn't see the ktor library after I've added it as a dependency ... Anyone had success with using KMM with KTor in the shared module or is it not ready yet?

Hi, I am having scenerios where I get

NoSuchMethod

in jvm runtime. It is multiplatform code that executes well in kotlin/js browser, but fails in jvm implementation looks something like this // in submodule

common

interface ICommon 

fun ICommon.greet(greeting: String, name: String)

// in submodule

client

which depends on common

interface IClient : ICommon

class ClientImpl(): IClient

// my tests in submodule

client

class

ClientImpl().greet("Hello","World");

Passes on js/browser, fails on jvm using IR for both JVM and JS

Hi, curious if SwiftUI previews still work for everyone with Kotlin 1.4.21 and Xcode 12.3 - tried both with my project and with @John O'Reilly’s PeopleInSpace, but getting the same crash during preview:

Application Specific Information:
abort() called
CoreSimulator 732.18.6 - Device: iPod touch (7th generation) (DE2D8C92-2BA3-4592-8CF0-D838EA741FBC) - Runtime: iOS 14.3 (18C61) - DeviceType: iPod touch (7th generation)

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	0x00007fff60c58462 __pthread_kill + 10
1   libsystem_pthread.dylib       	0x00007fff60c91610 pthread_kill + 263
2   libsystem_c.dylib             	0x00007fff200fab94 abort + 120
3   MorphologyWordView.2.preview-thunk.dylib	0x000000010f035b19 konan::abort() + 9
4   MorphologyWordView.2.preview-thunk.dylib	0x000000010f03598c RuntimeAssertFailed(char const*, char const*) + 156
5   MorphologyWordView.2.preview-thunk.dylib	0x000000010f04fa8f __Kotlin_ObjCExport_initialize_block_invoke + 1055
6   libdispatch.dylib             	0x00007fff20106508 _dispatch_client_callout + 8
7   libdispatch.dylib             	0x00007fff2010775d _dispatch_once_callout + 20
8   MorphologyWordView.2.preview-thunk.dylib	0x000000010f04f664 Kotlin_ObjCExport_initialize + 36
9   MorphologyWordView.2.preview-thunk.dylib	0x000000010eb1bab7 +[KotlinBase initialize] + 55
10  libobjc.A.dylib               	0x00007fff20178453 CALLING_SOME_+initialize_METHOD + 17
11  libobjc.A.dylib               	0x00007fff20179326 initializeNonMetaClass + 717
12  libobjc.A.dylib               	0x00007fff201790b0 initializeNonMetaClass + 87
13  libobjc.A.dylib               	0x00007fff2017a3ad initializeAndMaybeRelock(objc_class*, objc_object*, mutex_tt<false>&, bool) + 173
14  libobjc.A.dylib               	0x00007fff20185b8f lookUpImpOrForward + 668
15  libobjc.A.dylib               	0x00007fff2017421b _objc_msgSend_uncached + 75
16  MorphologyWordView.2.preview-thunk.dylib	0x000000010f39a73e type metadata accessor for SharedCodeWordMorphology + 30
17  net.cafesalam.QuranSearch     	0x000000010c147d33 static MorphologyWordView_Previews.previews.getter + 115 (MorphologyWordView.swift:37)
18  net.cafesalam.QuranSearch     	0x000000010c148489 protocol witness for static PreviewProvider.previews.getter in conformance MorphologyWordView_Previews + 9

actual app works fine on both Android and iOS - and in my case at least this is just a

data class

that i am using in the preview / swift ui code that causes this crash. i saw a similar part of the crash reason in the case of PeopleInSpace also:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	0x00007fff60c58462 __pthread_kill + 10
1   libsystem_pthread.dylib       	0x00007fff60c91610 pthread_kill + 263
2   libsystem_c.dylib             	0x00007fff200fab94 abort + 120
3   ContentView.2.preview-thunk.dylib	0x000000010451b0d9 konan::abort() + 9
4   ContentView.2.preview-thunk.dylib	0x000000010451af4c RuntimeAssertFailed(char const*, char const*) + 156
5   ContentView.2.preview-thunk.dylib	0x000000010453504f __Kotlin_ObjCExport_initialize_block_invoke + 1055
6   libdispatch.dylib             	0x00007fff20106508 _dispatch_client_callout + 8
7   libdispatch.dylib             	0x00007fff2010775d _dispatch_once_callout + 20
8   ContentView.2.preview-thunk.dylib	0x0000000104534c24 Kotlin_ObjCExport_initialize + 36
9   ContentView.2.preview-thunk.dylib	0x0000000104532a02 (anonymous namespace)::initRuntime() + 194
10  ContentView.2.preview-thunk.dylib	0x00000001045325af Kotlin_initRuntimeIfNeeded + 31
11  ContentView.2.preview-thunk.dylib	0x0000000104003dbe -[NSArray(NSArrayToKotlin) toKotlin:] + 30
12  com.surrus.PeopleInSpaceSwiftUI	0x000000010108fc61 Kotlin_Interop_refFromObjC + 65
13  com.surrus.PeopleInSpaceSwiftUI	0x00000001011b0006 kfun:co.touchlab.sqliter.DatabaseFileContext#iosDirPath(kotlin.String){}kotlin.String + 566

anyone have any luck working around this or any ideas of what to look at?

is there any pattern for faking Kotlin classes exposed to Swift? Let's say I have

LoadUserUseCase

in my Kotlin shared code. In Swift i have a

UserViewModel

which has the usecase injected. Now i want to write tests for this ViewModel, so I need to create a fake. But there is no protocol to conform to and of course

Cannot inherit from non-open class 'LoadUserUseCase' outside of its defining module