How do you guys get over the

unresolved reference: platform

in a mpp project? It seems that this happens according to the weather or something like that, sometimes it works fine and I can use autocomplete for the

platform

but other time it simply doesn’t. I already tried invalidating caches and restart, tried removing some folder that I saw in a random stackoverflow thread, but it still happens.

Hello guys, I’m trying to get the

GoogleTagManager

DataLayer in a kotlin multiplatform project, and I got it working for the Android easily. Problem is with iOS, following their guide I need to use the GoogleTagManager cocoapod: https://developers.google.com/tag-manager/ios/v3/swift I also needed to create a BridgingHeader as their tutorial says. What I did was: Create a BridgingHeader.framework myself, with the following headers that are here: https://github.com/jigish/GoogleTagManager/tree/master/GoogleTagManager/Library plus a BridgingHeader-umbrella.h as follows:

#ifdef __OBJC__
#import <UIKit/UIKit.h>
#else
#ifndef FOUNDATION_EXPORT
#if defined(__cplusplus)
#define FOUNDATION_EXPORT extern "C"
#else
#define FOUNDATION_EXPORT extern
#endif
#endif
#endif
#import "TAGManager.h"
#import "TAGContainer.h"
#import "TAGContainerOpener.h"
#import "TAGDataLayer.h"
#import "TAGLogger.h"

Added a module.modulemap like so:

framework module BridgingHeader {
  export *
  umbrella header "BridgingHeader-umbrella.h"
  header "TAGContainer.h"
  header "TAGContainerOpener.h"
  header "TAGContainerOpener.h"
  header "TAGDataLayer.h"
  header "TAGLogger.h"
  header "TAGManager.h"
}

And my BridgingHeader.def is:

language = Objective-C
modules = BridgingHeader
compilerOpts = -framework BridgingHeader
linkerOpts = -framework BridgingHeader

But it doesn’t seem right. Anyone had something similar like this that could provide some insight? Also, thanks to @magnumrocha for his help with this issue before 🙂

Somewhat related to that....has anyone an example of using Ktor on macOS (as part of Multiplatform project)? I can use Ktor 1.3.2 with Coroutines 1.3.5-native-mt on iOS but doesn't work on macOS.

Hello, was wondering how I'd go about creating a multiplatform project that targets android but also jvm for desktop. Basically sharing logic between android and desktop applications. I tried creating new jvm target with different name and came across some variant errors.

Hi, I have a problem after I upgrade Kotlin multiplatform version from 1.3.61 to 1.3.71. It's work fine in iOS 13.3 but when I try to run in iOS12.0 , It's crash as screenshot below. Anyone met this issue before? I test on Xcode 11.3.1 and 11.4

How is everyone currently handling dependency Injection? The app I'm working on for Android and IOS use KMP for the domain and data layers then Flutter for the UI. I was thinking of handling DI outside of KMP, for exame using dagger for Android as in native Android I've mages to use Dagger in a way where my domain and data layers have no dependencies on Dagger. The problem is I'm unsure about doing this for Ios having never developed for it before although I've read Needle and Dagger are similar? I've seen Koin( which I've used before) and KodeIn (which I haven't) be mentioned but haven't seen any example usage and theres also the option of doing it myself(Pure DI) Basically I've done a some research but it's the native part that is making me wary as I've seen things about concurrency issues TDLR: I'd like to know if anyone has any experience with DI on KMP

I receive the following error:

Could not find method npm() for arguments [cheerio] on object of type org.jetbrains.kotlin.gradle.plugin.mpp.DefaultKotlinDependencyHandler.

I’m using the Groovy DSL

Hey folks 👋 Can someone point me in the right direction regarding how & where to host my private KMP lib which needs to be consumed in a separate Android project? 🤔 (jitpack?)

is it possible to make a mutliplatform project with all of the above: js, jvm, android, ios, common?

Is anyone aware of an eventbus library for KMP, supporting at least JVM (Android) and K/N (iOS)? And is there any directory of KMP libraries where we can go to discover what’s out there?

Hello guys, is there a way to combine both release and debug

.framework

into one single file? So I wouldn’t need to provide both versions, one for simulator and one for devices. I tried using the following script:

# create folder where we place built frameworks
mkdir build
# create folder to store compiled framework for simulator
mkdir build/simulator
# copy compiled framework for simulator into our build folder
cp -r debugFramework/MyLib.framework build/simulator
# create folder to store compiled framework for simulator
mkdir build/devices
# copy compiled framework for simulator into our build folder
cp -r releaseFramework/MyLib.framework build/devices
# create folder to store compiled universal framework
mkdir build/universal
####################### Create universal framework #############################
# copy device framework into universal folder
cp -r build/devices/MyLib.framework build/universal/
# create framework binary compatible with simulators and devices, and replace binary in unviersal framework
lipo -create   build/simulator/MyLib.framework/MyLib   build/devices/MyLib.framework/MyLib   -output build/universal/MyLib.framework/MyLib
# copy simulator Swift public interface to universal framework
cp build/simulator/MyLib.framework/Modules/MyLib.swiftmodule/* build/universal/MyLib.framework/Modules/MyLib.swiftmodule

But it fails with:

fatal error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo: build/simulator/MyLib.framework/MyLib and build/devices/MyLib.framework/MyLib have the same architectures (x86_64) and can't be in the same fat output file

Hi All! Been trying to migrate to 1.4-M1 but have issues when it comes to JsonFeature install.

Unresolved reference: json
Unresolved reference: json
Unresolved reference: JsonFeature
Unresolved reference: serializer
Unresolved reference: KotlinxSerializer
Unresolved reference: JsonFeature
Unresolved reference: serializer
Unresolved reference: KotlinxSerializer

Every time I build I get the above errors. As far as I can see im not missing anything and my IDE doesnt complain. These are the dependacies I have installed.

const val kotlin = "1.4-M1"
    const val ktor = "1.3.2-1.4-M1-2"
    const val coroutinesCore = "1.3.5-1.4-M1"
    const val serializationCommon = "0.20.0-1.4-M1"

The network request itself is very simple.

private val client: HttpClient by lazy {
        return@lazy HttpClient {
            install(JsonFeature) {
                serializer = KotlinxSerializer()
            }
        }
    }

    override fun getVersion(onSuccess: (Version) -> Unit, onError: (KarhooError) -> Unit) {
        coroutineScope.launch {
            val resp: Version = client.get(VERSION_METHOD)
            onSuccess.invoke(resp)
        }
    }

The imports are added with no issues and I can see the build libs. Just very lost as to why it can't locate the files during a build?

I'm in aw of how powerful it could be... but its confusing. Like the Kotlin Multiplatform plugin creates this template... why has it proven so difficult to add android and iOS as source sets? Its as if Multiplatform plugin doesn't have them or something.

Hi guys, anyone know if it's possible to have on a kmp something like BuildConfig on android? I'd like specify some constants in the common build.gradle(.kts) and access them in the common code (like staging/prod/test endpoints and so on, as I was used to android flavors/build config etc)

Hi everyone, does anybody had a problem with delay() on ios platform? I have a simple loop: while(true) { println(“log1”) delay(1000) println(“log2") } launched on GlobalScope. On Android it works fine but on ios it doesn’t. Like delay has infinite timeout…

Anyone know what these messages mean, they are from Idea correct and not gradle correct? It sounds like I could still use gradle and the IDE gradle plugin but that the IDEA can't communicate with gradle? I see these messages too often

not sure if this is the right place, i’m a little baffled trying to make this work and i can’t seem to find anything on google to answer my questions. function:

inline fun <reified T> withResult(
    method: Result<T>,
    onFailure: (errors: List<Throwable>) -> Unit
): T {
        @Suppress("IMPLICIT_CAST_TO_ANY")
        val methodResult = when (method) {
            is Result.Success -> { method.t }
            is Result.Failure -> { onFailure.invoke(method.errors) }
        }
        return methodResult as T
}

usage:

val r = withResult(method) { return Result.Failure(it) }

i can get this function to work on jvm, however it does not work on js. it results in a

ClassCastException

the transpiled js appears to show that instead of invoking

onFailure

it is only assigned to

methodResult

. also, this is a custom sealed class

Result

not

kotlin.Result

i’m hoping i’m missing something obvious here. 😅

Trying to make a js/jvm/android/ios multiplatform project, haven't started iOS yet... I had js/jvm working pretty well and understood most of it, I have android sort of working now but holly molly there are 50 milltion tasks now, half of them don't seem to work... how the heck do you build and test this stuff.

Yeah... I'm about to give up on this whole dam platform. I'm done for the night.

I’ve got a kotlin multiplatform module and AS is having trouble resolving a bunch of the symbols

Hey folks, is anyone else seeing this? While upgrading our project to 1.3.71, I also switched to the recommended syntax of defining iOS source sets, replacing this:

iosX64Main { ...dependencies... }
iosArm64Main {
    dependsOn iosX64Main
}

with this:

ios {
    iosArm64Main.dependsOn it
    iosX64Main.dependsOn it

    ...dependencies...
}

moving iOS-only source files from

iosX64Main

to

ios

folder accordingly. Now all imports starting with

platform.

are highlighted red in the IDE all the time, builds fine though. Is this a known issue?

OT dart is so ugly there is a way i can use Kotlin for Flutter?

Does anyone know if 1.3.7 supports multiple static K/N frameworks? The release notes mention support for more than one dynamic framework, which I’ve tested and works, but I tried with static frameworks and am getting the

duplicate symbols for architecture

error since there are two versions of things like

Kotlin.Any

Hello guys, I’m trying to add something to my

build.gradle.kts

like:

android {
 ...
 ...
 compileOptions {
   kotlinOptions {
   ...
   }
 }
}

But I get unresolved reference to kotlinOptions.. anyone can give a little help? Thanks!

Hi, how can I share actual/expect code for iOS and tvOS. For example, “expect” CoroutineDispatcher implementation is the same for iOS and tvOS but I need to copy/paste it in each ios/tvos source sets..

I’d like to create a macOS app, and was wondering if it’s a good idea to to write it using UiKit instead and then port to macOS. Dev guides for App Kit are awfully low.

How do I invoke the

syncFramework

gradle task manually? Where do all the parameters for it come from? (

$HEADER_SEARCH_PATHS

,

$OTHER_CFLAGS

etc)? My objective is to build the framework manually and publish it to a remote cocoapods repo.

I'm looking at the multiplatform sample on SqlDelight. It only has the common code in the common lib. Platform specific (Android/iOS) drivers are added in top level app module. My question is that how would this work on a Multiplatform library. Let's say we have a library where the persistence is an implementation detail. Is it possible to keep it all in the "common" module and all users will automagically get the correct version?

Has anyone made a multiplatform app that utilizes flutter? Been doing my front ends in flutter last few days and I'm liking it, need to combine it with my ktor server stuff for the same product so I can have unified codebase, git, maybe common kotlin lib later, etc. Wondering if there is a recommended way to do that.