I’m using

cocoapods

to add the dependency for my

common

. However I’m getting

Could not build Objective-C module 'common'

without any more information. Is there any way to find more information why is the build failing?

Anyone has already tried this project? https://github.com/joreilly/PeopleInSpace It uses SwiftUI and Jetpack Compose. I can get it running on Android, but not on iOS. I did a gradlew build (takes around 5mins) and then I tried to open the project in XCode. Everything seems fine, but I have a error saying

import common // <- Not found

. How should I proceed?

I kept on making a new kotlin multiplatform project for android and iOS library from scratch over the past few months for various projects I was working on. So, made a starter project to help me, and anyone who needs it here: https://github.com/sujitpoudel/kmp-android-ios-starter Sets up the android side of library with API 29, has gradle task to build iOS fat framework and a setup as well as release script I use. Hope someone finds this useful.

@elizarov @olonho A few questions (code on thread) 1. Should the property be frozen? The parent

this

isn’t frozen, and it seems like the property shouldn’t be frozen since it’s only ever touched by one thread. 2. I’m not seeing an exception when I attempt to mutate something that’s frozen. That seems odd. 3. I’m pretty sure I was seeing different behavior a month or so back (around Kotlinconf) where the property wasn’t frozen. Am I imagining this?

Hi guys, im fetching a api endpoint and the data looks like this.

{
  "-LzAGaZtoPN702hIyUPh": {
    "isActive": true
  }
}

I wonder how can i get the dynamic key? Thanks!

Hello everyone, is there any open source project made based on Sqldelight and Ktor ?

Hi everyone, Im currently trying to hash a password with SHA-1. But for some reason iOS does emit some zeros Android:

val HEX_CHARS = "0123456789abcdef"
        val bytes = MessageDigest.getInstance("SHA-1").digest(stringToHash.toByteArray())
        val result = StringBuilder(bytes.size * 2)

        bytes.forEach {
            val i = it.toInt()
            result.append(HEX_CHARS[i shr 4 and 0x0f])
            result.append(HEX_CHARS[i and 0x0f])
        }

        return result.toString()

iOS:

val input = stringToHash.encodeToByteArray()
        val digest = UByteArray(CC_SHA1_DIGEST_LENGTH)
        input.usePinned { inputPinned ->
            digest.usePinned { digestPinned ->
                CC_SHA1(inputPinned.addressOf(0), input.size.convert(), digestPinned.addressOf(0))
            }
        }
        return digest.joinToString(separator = "") { it.toString(16) }

How to use Android resources in an

androidMain

source set? I tried both

res

and

resources

folder names, the last one seems recognized but resources are not accessible (nor from the code or from e.g. layouts).

Hey, anyone had an issue with

-Xobjc-generics

? I’m getting

Any?

on iOS when I’m trying to consume some generics

How can I add annotationProcessor on my build.gradle.kts (DSL)? (I’m on Android part here) I need that:

kapt("androidx.lifecycle:lifecycle-compiler:$lifecycleVersion")

But with my configuration it’s not working, can’t find the solution.. It says, required KaptOption.. Here is what I have:

sourceSets {
    val androidMain by getting {
        kotlin.srcDir("src/main/kotlin")
        dependencies {
            kapt("androidx.lifecycle:lifecycle-compiler:$lifecycleVersion")

Quick question, I am building my KMP app with sqldelight and I saw on the documentation that we need to add -lsqlite3 for compilation. I put it but I have this error now : e: Invalid argument: -lsqlite3 Conf:

configure(listOf(iosArm32, iosArm64, iosX64)) {
        compilations {
            val main by getting {
//                extraOpts("-Xobjc-generics -lsqlite3")
                kotlinOptions {
                    freeCompilerArgs = listOf("-Xobjc-generics", "-lsqlite3")
                }
            }
        }

        binaries.framework {
            export("org.jetbrains.kotlinx:kotlinx-coroutines-core-common:$coroutines_version")
            baseName = frameworkName
        }
    }

Anyone know how you set

kotlinOptions

(specifically

freeCompilerArgs

) for

android

targets? I must be missing something obvious, but

android.compilations

is just an empty array (which is also a bit weird and doesn’t match https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html#default-project-layout) and using

targets.all {
        compilations.all {
            kotlinOptions {
                freeCompilerArgs = ["..."]
            }
        }
    }

does not work either (which kinda makes sense since the compilations array is empty).

Has anyone seen the following warning? Trying to build a test app on iOS (that imports a <MyLibraryName>.framework).

linking module flags 'SDK Version': IDs have conflictiing values...

I have a function returning

Array<String>

in Kotlin Multiplatform. Is this specific type consumable from Swift? If so, what is the equivalent type in Swift? EDIT: Looks like it's

KotlinArray

in Swift. EDIT2: Well, looks like

KotlinArray

is a generated type from my framework itself. I wonder if I shouldn't use

List<String>

instead of

Array<String>

? Would it then translate into the desired type in Swift (which would be

[String]

I guess)?

Question about shared state in Android/iOS MPP. I have a working setup with compilation to Android and iOS, but now I have run into the whole frozen state world (new to me) and is stuck after some hours of trawling the web for info and examples. Simplified, I have a static global variable CurrentConfig which points to the current version of a parsed JSON config. This is used in many places of the app, so they should not load and parse it all the time on their own, but share it. Once in a while, the config is replaced with a freshly downloaded one on the fly. I guess this is an often seen pattern, but I have no idea how to solve it using Kotlin Native. Anyone have a best practice example to accomplish something like this?

So maybe this is asked here already but we have an issue. All functions in our shared code marked as

suspend

do not show up in the compiled iOS code and cannot be called. Do we have to remove coroutine support from our shared code or is there some trick to make it work?

man, IDEA is on the fritz in one of my MPPs. Code navigation is off. It's showing code errors in random places.

What is the state of Multiplatform currently? Is it worth trying to publish a Multiplatform library now, before KLib comes?

Can someone please enlighten me on unit testing with Kotlin multiplatform? As I understand it,

commonMain

and

commonTest

SourceSets

exist regardless of the target. If my project only has ios and android targets, does that mean I can't run unit tests on the common code contained in

commonTest/test

?

build/js/packages_imported/ktor-ktor-client-core/1.3.0/ktor-ktor-client-core.js

Module not found: Error: Can't resolve 'abort-controller' in 'build\js\packages_imported\ktor-ktor-client-core\1.3.0'

build/js/packages_imported/ktor-ktor-io/1.3.0/ktor-ktor-io.js

Module not found: Error: Can't resolve 'text-encoding' in 'build\js\packages_imported\ktor-ktor-io\1.3.0'

I'm having these errors in the browser console of my KotlinJS project. I'm not using ktor as a direct dependency - I use a kotlin multiplatform library which uses ktor. I've had the same errors when developing the aforementioned library, and after adding jsMain npm dependencies in the library's build gradle file like this:

api(npm("text-encoding"))
api(npm("abort-controller"))

the errors dissapeared from the library. However, they still do exist in my KotlinJS project which uses this library. What could be the issue here?

Hi there. Anyone here measuring code coverage on a kotlin multiplatform project? Are there any good tools out there?

JaCoCo

obviously helps with JVM code only at best, right?

Hi! I'm working on a MPP library, but wondering if there is some standard practice yet on having a pure Kotlin/MPP module with Jvm pure sources and Android specific sources. My current setup is Kotlin/MPP module with pure Jvm sources, and a second module for the Android sources. If this is the current standard practice... sweet! If not, I would appreciate any enlightenment! Thanks!

Hey guys, I'm making Kotlin Multiplatform work on Windows now, but I have an issue of calling Kotlin back from C++. Here is my use case: I want use socket.io-client-cpp to connect to a SocketIO server, and get a callback when it connects successfully. But the callback is not invoked on main thread, I do notice the note on the C Interop page, calling

kotlin.native.initRuntimeIfNeeded()

in my kotlin code before I connect to server, but it still crash my program. If I fire the callback on main thread, e.g. APP C++ code calls

kotlinTestFunc

, which calls

cppSocketIOConnect

, and fire the callback directly inside

cppSocketIOConnect

, it works fine. Do I miss something?

Is there a way in MPP project to only enable publication of one platform?

Hi everyone, is there some gradle “tweaks” to speed up the build time on KMP? Whenever I change a small portion of code in SharedCode, it takes almost 4-5 minutes to rebuild.

I am facing the issue similar to https://stackoverflow.com/questions/58620688/nsinv but ONLY in iOS 11 but not in iOS 13

Does dukat integration works on MPP gradle plugin? `

kotlin.js.experimental.generateKotlinExternals=true

seems to be doing nothing (or I might be looking for generated externals wrong)

is there a "right way" to run android unit tests when all the tests are in commonTest?

So I’ve been playing with multiplatform for a few weeks now, and I finally reached a small milestone for it. I have CircleCI compiling each platform on my project (Jvm, Node.js, Browserify, Linux, and Windows) and running the common tests.