I know what a UIWebViewDelegate is

I'm just wondering why does it have to exist in the build? Is there any particular reason?

I work on improving the build time for generating the

XCFramework,

which later is copied to another directory and used by React UI layer. Initially, we were using

assembleXCFramework

which took 3m 30s. Then I changed it to

assembleSharedReleaseXCFramework

and the build time decreased to 2m 15s, which is already great.

XCFramework

generated, files copied all run fine. But the

assembleSharedReleaseXCFramework

still runs both tasks

linkReleaseFrameworkIosX64

and

linkReleaseFrameworkIosArm64

, which take about 65s each. • We are all on MacBooks M1 in our team. Would you happen to know if we need both tasks to run? • If I skip

linkReleaseFrameworkIosX64

by adding

-x linkReleaseFrameworkIosX64

, it runs the first task, but the job fails because

XCFramework

is not generated. • Do you think this is the right approach, or do you have suggestions?

Hi team, I’m starting with KMM in an existing iOS project (workspace), which already contains a shared XCFramework (Appcore) and a main application project (UI & other stuff). I want to integrate the KMM framework in both targets, but if I get it right the

./gradlew :model:embedAndSignAppleFrameworkForXcode

has to be in the main app’s build phases. I can link the Appcore FW with the KMM Shared framework in the build settings but then I skip the build phase for the KMM Shared FW. Is there any way to use the KMM Shared framework in both targets simultaneously?

Apple is rewriting Foundation in Swift (https://www.swift.org/blog/future-of-foundation/). It seem like there will be an Objective-C compatibility layer, but it’s not clear how much this would impact Kotlin/Native.

Hello I just start learning some iOS development (basically I am a Kotlin Spring Backend Dev) … https://www.jetbrains.com/objc/ I ask my self make it sense to start with AppCode I just saw

AppCode is no longer available as a commercial product as of December 14, 2022.

everybody is saddened by that..

I've just tried updating to Kotlin 1.8.0 which was released today, and I get this error when building from Xcode

Hello, I've just tried updating to Kotlin 1.8.0 (from 1.7.2) which was released today, and I get this error when building from Xcode:

Could not create task ':shared:linkDebugFrameworkIosArm64'.
> Could not create task of type 'KotlinNativeLink'.
   > Configuration with name 'iosArm64DebugFrameworkExport' not found.

I just have

./gradlew :shared:embedAndSignAppleFrameworkForXcode

in a build phase script as is recommended Adding the info or debug flags desn't provide any useful extra information as far as I can see. I'm not really sure how to go about debugging this, or seeing why the configuration has not been created? I see in the release notes for 1.8.0 it says:

The Kotlin Gradle plugin API is binary-compatible with previous releases. There are, however, some source and ABI-breaking changes in the kotlin-gradle-plugin artifact. Most of these changes involve additional generic parameters to some internal types. One important change is that the KotlinNativeLink task no longer inherits the AbstractKotlinNativeCompile task.

But I'm not sure if that is relevant nor how to get more info on it

Hey folks, not sure if many of you have used the

touchlab/xcode-plugin

before that allows you to breakpoint Kotlin code within the Xcode project for KMM. Just wondering if any of you have come across this issue before whereby the breakpoints have stopped working indicating that the code isn’t getting compiled? Any ideas on how I might resolve this? More detail in the issue I’ve posted here https://github.com/touchlab/xcode-kotlin/issues/91 Not sure if this is better posted in #multiplatform or #kotlin-native, let me know!

Hello everyone! I already tried to look into this channel.. but I didn't find what I was looking for.. so we are trying to build a very simple KMM library to be shared on one native app we are developing. We started from android studio and created a new project from the template available for KMM library. Than we tried to import manually the library created in a basic IOS app... and it worked 😒uccess-baby: Later we spent some days trying to make this library available on our private cocoapod repository.. but with no success 😒ad-panda: Is there an official procedure to follow to publish the library into a cocoapod repository in order to make it available as a library for an xcode app? Or there is a better way to handle this kind of scenario? Thanks you

I’m using a KMM library that declares a pod in it’s build.gradle.kts for iOS, and I’m having trouble running tests on the module that uses the library. If I don’t include

pod("FirebaseAnalytics")

in my build.gradle.kts, I get a missing symbol error when trying to run tests. If I add

pod("FirebaseAnalytics")

, I get

Compilation failed: Linking globals named 'knifunptr_cocoapods_FirebaseAnalytics0_kFIREventAdImpression_getter': symbol multiply defined!

. Is there a way to tell the cocoapods plugin that I want to pull down the binary, but I don’t care to have the cinterop generated in my module?

Hey guys! I’m working on porting an existing iOS app to Kotlin Multiplatform Mobile and I’m struggling in figuring out how to integrate Datadog with Ktor. I see Datadog provides a Java library, that cannot be used in the shared module of my app. I then thought of passing to the shared kotlin code an instance of DDURLSessionDelegate, which is the delegate responsible for tracing automatically every call performed through an URLSession on iOS. But unfortunately, with Ktor 2.2.1 is not possible anymore to pass a custom session with a custom delegate as a preconfigured Darwin session. The only doable thing is to create instance of KtorNSURLSessionDelegate, that is a completely sealed class. Do you have any suggestion? I’ll give more detail if needed :) Any help will be really appreciated! Thanks

Anyone who is able to debug (e.g. stop on line) the KMM code from the iOS simulator? I’m having hard times. Tried Android Studio and Xcode, both with negative results. If you have any experiences, please share them in thread in #kotlin-native https://kotlinlang.slack.com/archives/C3PQML5NU/p1673631195903349 Thanks a lot! 🙏

I currently don't have a mac with me to experiment, and I can't seem to find these answers online. I know that a

List

(written in kotlin) is mapped to an `Array`/`NSArray` in Swift/OC I know that a

MutableList

is mapped to an

NSMutableArray

but it is unclear what an

Array

(written in kotlin) is mapped to in Swift. is it also mapped into a 1.

Array

/`NSArray` 2.

NSMutableArray

3.

KotlinArray

How is a kotlin Array mapped into a C as well?. Also not clear in the documentation

Has anyone taken a look at using Gradle Swift build in conjunction with KMM? Could this be helpful when pure Swift dependencies are needed? I’m thinking there has to be an easy way to do the traditional Kotlin interface implemented by Swift, where the library can handle creating the Swift class. The main challenge here is that the Swift framework would have to depend on the Kotlin framework to get the interface, but the Kotlin framework would have to depend on the Swift framework to get the class that implements the interface.

Hi everyone I need to add new modules (

iosArm64Main

,

iosX64Main

,

iosSimulatorArm64Main

, etc) to an existing projects? In my current project I have only

iosMain

but I would like to have other modules as well because otherwise I am not able to build my cocoapod dependency and have error like this Undefined symbols for architecture _*x86_64*_:. ld: symbol(s) not found for architecture _*x86_64*_

I am running a KMM project. I get this error, but I am not sure how to fix it:

Cannot infer a bundle ID from packages of source files and exported dependencies, use the bundle name instead: shared. Please specify the bundle ID explicitly using the -Xbinary=bundleId=<id> compiler flag.

Hey everyone So I'm working on a KMP project where the

ios

module is set up to use cocoapods But this is causing SwiftUI's preview to fail (i.e. the app runs fine, but I'm not able to see previews in XCode) It gives the following error:

linker command failed with exit code 1 (use -v to see invocation)

----------------------------------------

LinkDylibError: Failed to build ContentView.swift

Linking failed: linker command failed with exit code 1 (use -v to see invocation)

|  BuildInvocationError
|  
|  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -F /Applications/Xcode.app/Contents/SharedFrameworks-iphonesimulator -target arm64-apple-ios15.0-simulator -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator16.1.sdk -L/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Intermediates.noindex/EagerLinkingTBDs -L/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator16.1.sdk/usr/lib/swift -F/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Intermediates.noindex/EagerLinkingTBDs -F/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator -F/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator/KMPNativeCoroutinesCore -F/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator/KMPNativeCoroutinesRxSwift -F/Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator/RxSwift -F/Users/shubhamsingh/IdeaProjects/PlayTogetherKMP/ios/Pods/../../shared/build/cocoapods/framework -Xlinker -rpath -Xlinker /usr/lib/swift -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -L/usr/lib/swift -lsqlite3 -ObjC -lc++ -framework KMPNativeCoroutinesCore -framework KMPNativeCoroutinesRxSwift -framework RxSwift -framework shared -framework Pods_ios -bundle -bundle_loader /Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Products/Debug-iphonesimulator/ios.app/ios /Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Intermediates.noindex/ios.build/Debug-iphonesimulator/ios.build/Objects-normal/arm64/ContentView.1.preview-thunk.o -o /Users/shubhamsingh/Library/Developer/Xcode/DerivedData/ios-ahzpwspogoxmxtfairhvwgbqqgwj/Build/Intermediates.noindex/Previews/ios/Intermediates.noindex/ios.build/Debug-iphonesimulator/ios.build/Objects-normal/arm64/ContentView.1.preview-thunk.dylib -framework SwiftUI

I found a GitHub issue that matches what I'm trying to say: https://github.com/JetBrains/kotlin-native/issues/3059 In this issue, they talk about making

isStatic = false

in the shared

build.gradle.kts

But if I do that, neither the app works nor the previews When trying to see the preview, XCode shows this error:

ios crashed because shared.framework is missing

dyld_sim [
        Library not loaded: @rpath/shared.framework/shared

And when trying to run the app, it crashes while giving the following error:

I have a kotlin module that pulls in a cocoapods library for iOS. When I try to add a macos target to this module, the cocoapods plugin is trying to get the pod for macos as well. This specific cocoapod does not support macos (though there is one that does). Is there a good way to specify that certain pods are for iOS only?

Is there any compiler plugin that does something like JvmOverloads for Objective-c?

Hey everyone Xcode is not able to generate previews and crashes as soon as I write any code from the

shared

module in it (image attached below for the same). If I remove any code that is coming from Kotlin (or the

shared

module), the previews start working fine again 👍 I'm using Kotlin version

1.7.21

and the

Regular framework

in iOS instead of

Cocoapods

since Cocoapods was not able to generate any previews at all. The regular framework is at least able to generate previews for code purely written in Swift & Xcode. While crashing, this is the crash log that the Xcode is giving me: https://pastebin.com/FemVAay4

Im trying to upgrade an existing project to kotlin 1.8.0 and im getting this issue:

Could not create task ':firebase-app:linkPodDebugFrameworkIosArm64'.
> Could not create task of type 'KotlinNativeLink'.
   > Configuration with name 'iosArm64PodDebugFrameworkExport' not found.

Target setup is the following:

ios {
            binaries {
                framework {
                    baseName = "FirebaseApp"
                }
            }
        }
        iosSimulatorArm64 {
            binaries {
                framework {
                    baseName = "FirebaseApp"
                }
            }
        }

Im using cocoapods to fetch the dependancy for ios:

kotlin {
        cocoapods {
            ios.deploymentTarget = "11.0"
            framework {
                isStatic = true
            }
            noPodspec()
            pod("FirebaseCore")
        }
    }

Is it possible to somehow use cocoapods gradle plugin to import some Objc dependencies and use it in my common code, and do not export the cocoapods dependency down to the iOS app?

is there a roadmap for KMM native? Are there plans to support Pure Swift imports via the cocoapods plugin?

I was able to retrieve a binding Swift Array from a Kotlin MutableList source, but I can’t find the way to retrieve a binding Swift Array from a Kotlin MutableMap of MutableLists source, given the map key. === Kotlin MutableList to binding Swift Array === Kotlin MutableList definition:

var path : MutableList<ScreenIdentifier> = mutableListOf()

retrieving Binding Swift Array => successful! 🎉

extension Binding where Value == NSMutableArray {
    public func cast() -> Binding<[ScreenIdentifier]> {
        return Binding<[ScreenIdentifier]>(get:{ self.wrappedValue as NSArray as! [ScreenIdentifier] },
            set: { self.wrappedValue = NSMutableArray(array: $0) })
    }
}
===
NavigationStack(path: $path.cast()) {
...
}
===

=== Kotlin MutableMap of MutableList to binding Swift Array === Kotlin MutableMap of MutableLists definition:

var paths : MutableMap<String, MutableList<ScreenIdentifier>> = mutableMapOf(),

retrieving Binding Swift Array => not working 😩

extension Binding where Value == NSMutableDictionary {
    public func getPath(level1URI: String) -> Binding<[ScreenIdentifier]> {
        return Binding<[ScreenIdentifier]>(
            get:{
                let dict = self.wrappedValue as NSDictionary as! [String:[ScreenIdentifier]]
                return dict[level1URI] as! NSMutableArray as NSArray as! [ScreenIdentifier]
            },
            set: {
                var modifiedDict = self.wrappedValue as! [NSString:NSMutableArray]
                modifiedDict[level1URI as NSString] = NSMutableArray(array: $0)
                self.wrappedValue = NSMutableDictionary(dictionary: modifiedDict as! KotlinMutableDictionary<NSString,NSMutableArray>)
            }
        )
    }
}
===
NavigationStack(path: $paths.getPath(level1URI: myString)) {
...
}
===

this is the error given by XCode:

Referencing instance method 'getPath(level1URI:)' on 'Binding' requires the types 'KotlinMutableDictionary<NSString, NSMutableArray>' and 'NSMutableDictionary' be equivalent

Hi, I am developing a kotlin multiplatform mobile library for iOS and Android. On iOS the KMM library should use some functionality provided in a C++ library (

pod_mycpplibrary

). To integrate the C++ library we created a cocoapod and want to use the cinterop with ObjectiveC for interoperability with kotlin. The simplified

build.gradle.kts

looks like:

plugins {
        kotlin("native.cocoapods")
...
kotlin {
  cocoapods {
        version = "0.0.1"
        summary = "my library"
        homepage = ""
        name = libName

        ios.deploymentTarget = "13.5"

        xcodeConfigurationToNativeBuildType["CUSTOM_DEBUG"] = NativeBuildType.DEBUG
        xcodeConfigurationToNativeBuildType["CUSTOM_RELEASE"] = NativeBuildType.RELEASE

        framework {
            baseName = libName
            isStatic = true
            transitiveExport = true
        }

        pod("pod_mycpplibrary") {
            version = "1.0"
            headers = "foo.h"
            source = path(project.file("../pod_mycpplibrary"))

        }
        useLibraries()
    }

    val xcFramework = XCFramework(libName)
    val iosTargets = listOf(
        iosArm64(),
        iosSimulatorArm64()
    )

    iosTargets.forEach {
        it.binaries{
            framework {
                baseName = libName
                xcFramework.add(this)
            }
        }
    }

    sourceSets {
...

The folder strucure is as following: • kmmproject ◦ mylib ▪︎ src ▪︎ build.gradle.kts ◦ pod_mycpplibrary ▪︎ src ▪︎ pod_mycpplibrary.podspec ◦ … The pod can be successfully created with the command

./gradlew podPublishXCFramework

and can be found in

./mylib/build/cocoapods/publish/*

If a sample app is now using this library we always have to define both dependencies in the sample app in the Podfile.

target 'sample_app' do
  pod 'mylib', :path => '/path/to/kmmproject/mylib/build/cocoapods/publish/debug'
  pod 'pod_mycpplibrary', :path => '/path/to/kmmproject/mylib/pod_mycpplibrary'
end

Is there a way to build

mylib

in a way that we do not need to provide

pod_mycpplibrary

?

pod_mycpplibrary

is already build as static lib (

useLibraries

and

isStatic=true

). Should this not be enough? The generated podspec in the buildfolder also does not use https://guides.cocoapods.org/syntax/podspec.html#vendored_libraries Is there a way to set this? Or is there a better way to include a C++ library than using a pod with Objective C wrapper? Thank you.

i have a question about Native UX for IOS development using KMM? Is XCode still necessary for the screens or can it all be done in android studio?

Hi! I am developing a Kotlin Multiplatform library (if you're curious: #decouple). A contributor is planning on introducing iOS support for it. I myself have no knowledge of iOS development (but I'm quite familiar with Kotlin multiplatform itself, mainly JVM and JS). I'm not worried about the Gradle setup, but I am worried about my ability of checking features and avoiding regressions. From what I've heard (again, my knowledge of the Apple world is near zero), it's not possible to compile an iOS library without an MacOS machine. Is it true? Is it the case even through Docker? I do not have a MacOS machine, I only run Linux variants. If that's the case, how can I test changes contributed to the library?