How would I use a Ktor

HttpClient

in a background thread on iOS? The client needs to always be owned by the `Worker`'s thread and be accessible to all executions inside that worker 🤔 I basically need state in a

Worker

.

Is the conflict resolution of KN deterministic when exporting to ObjC and there are collisions in class names? Initially: Kotlin

mypackage.Url

-> Swift

Url

Kotlin

io.ktor.url.Url

-> Swift

Url_

But now it has flipped and thus my Swift code doesn't compile anymore.

Is there any example of iOS library publishing that uses Gradle Kotlin DSL, and targets at least

iosX64

and

iosArm64

?

I was doing some research into Kotlin and saw it's supported by LLVM and I'm also tangentially aware of LLVM-AVR as a target for the ATMEGA 8 bit micros like those found in the Arduino Uno. I emailed the author of AVR LLVM and asked him about using the Kotlin/Native LLVM platform as an AVR-LLVM source. I'd be interested in developing C bindings for Kotlin/Native on AVR-LLVM if something like that is possible.

Who can help me with dll library. I generate it by kotlin native and want to use in c#. How can I get class with properties and methods, which is created in kotlin native?

Hi devs! I create a new multiplatform project with Android and IOS. (It show a current platform) At android run perfectly but when I run the code on Xcode I have an error: /Users/.../Xcode/DerivedData/iosApp-axkbbwgyarknnvehlgjsmvkylxqc/Build/Intermediates.noindex/iosApp.build/Debug-iphonesimulator/app.build/Script-F861D812207FA4320085E80D.sh: line 2: /Users/dev/Documents/MultiplatformTest/iosApp/../gradlew: No such file or directory What a file I need? Where can get it?

Does a C-library compiled with cinterop tool support Android app as well or is it just for the iOS app? If so, how would a build.gradle file look like that has a cinterop tag to build a klib file for both the platforms. I am unable to make this klib work for android right now. Any ideas?

I use K/N module (CoreModule) in my Android/IOs project. That module is depends on another MPP module (CommonModule), so I use this code in my gradle-file to make classes from CommonModule be visible in the swift code:

binaries {
                framework('CoreModule') {
                    export project(":CommonModule")
                }
            }

Now I'm trying to migrate to the new CocoaPods Gradle plugin but receive a

Use of undeclared type '<class>'

error for classes from CommonModule. I've tried to apply cocoapods plugin to CommonModule and import both frameworks to swift files but it didn't help - I got 2 versions of each of CommonModule's classes that are incompartible between each other. Is there any analogue for

export(project(":exported"))

instruction in the new CocoaPods Gradle plugin?

I found this example how to run unit tests on iOS: https://github.com/Kotlin/mpp-example/blob/0ace750ffd2ccb8dd4adf40f26b4d6ecc462c06a/greeting/build.gradle#L87-L99 If you are using the Kotlin/Native CocoaPods plugin, how can you run the tests? It is not possible to start this Gradle task as the executable needs to be built from Xcode. Can I somehow start this task from Xcode?

Hi guys! I was trying to integrate cocoapods into my mpp project following the doc official documentation and I got the the below error. Any one know what does this mean?

Do flows work correctly in K/N? Are there any hidden pitfalls, anything like lack of multithreading in coroutines?

Are there any ways to schedule an operation with some fire rate (timer)? I guess there is not option to do that in common module. Should I implement it via expect/actual (for native and jvm in my case)? The timer should work on a different thread, can i use Worker to do that? If answer is yes, how can i pass a lambda to the worker's execute method? Maybe there are good examples how to implement it?

Hi everyone. Who can help me? I cannot understand how I can create and use object and C language after kotlin native generate library for native platform. I have a struct:

typedef struct {
  libpst_KNativePtr pinned;
} libpst_kref_kotlin_Array;

And I have a function which get this object as parameter:

libpst_KInt (*hash)(libpst_kref_com_tullynore_base_util_HashUtil thiz, libpst_kref_kotlin_Array values);

Anyone have any experience utilizing a

klib

? Or know of a good tutorial or more detailed documentation on the native libraries than I see on Jetbrains’ website? I’ve made a iOS framework with Kotlin Native, but there is a restriction they’ve created where you can only have one kotlin iOS framework in an app at a time. In an effort to modularize my shared code, I’d like to find a way to use several kotlin libraries in an iOS app at once. I believe for now I’ll need to create one Kotlin Native project that pulls in a bunch of libraries and spits out one bundled framework. But working with Gradle (not my forte) and this experimental stuff has got my head in a fog. Ex:

Modules
----------
Models feature A
Models feature B
Models feature C
API-Client feature A
API-Client feature B 
Other Business Logic

If our organization wants to use Feature B in another application I’d hate to have to pull all of that shared logic to the other app when I only want what matters to Feature B

Is there an equivalent of

@JvmName

and/or

@JvmMultifileClass

for Kotlin Native? I have files with the same name in different sourcesets of a multiplatform project (e.g.

common

,

ios

,

android

) and on iOS I end up with methods scattered under several different classes. (e.g.

ServiceKt

,

ServiceKt_

). Is this avoidable?

I’m trying to include Coroutines 1.3.0-M1 with Kotlin 1.3.40 in my project. Coroutines 1.3.0-M1 is not based on 1.3.40 so I need to build it manually. I successfully built coroutines and published it to maven local. However, the generated objective C framework has the following error (my module is named common):

Cannot find protocol declaration for 'CommonKotlinCoroutineContextElement'; did you mean 'CommonKotlinCoroutineContextKey'?

This is the part where it shows the error:

__attribute__((swift_name("KotlinCoroutineContext")))
@protocol CommonKotlinCoroutineContext
@required
- (id _Nullable)foldInitial:(id _Nullable)initial operation:(id _Nullable (^)(id _Nullable, id<CommonKotlinCoroutineContextElement>))operation __attribute__((swift_name("fold(initial:operation:)")));
- (id<CommonKotlinCoroutineContextElement> _Nullable)getKey:(id<CommonKotlinCoroutineContextKey>)key __attribute__((swift_name("get(key:)")));
- (id<CommonKotlinCoroutineContext>)minusKeyKey:(id<CommonKotlinCoroutineContextKey>)key __attribute__((swift_name("minusKey(key:)")));
- (id<CommonKotlinCoroutineContext>)plusContext:(id<CommonKotlinCoroutineContext>)context __attribute__((swift_name("plus(context:)")));
@end;

Could anyone here point me in the right direction what could be wrong?

With 1.3.40 in one of my projects, I keep getting the error

org.jetbrains.kotlin.konan.target.HostManager.<init>(Lorg/jetbrains/kotlin/konan/target/Distribution;ZILkotlin/jvm/internal/DefaultConstructorMarker;)V

when attempting to assemble the project, or in fact run any Gradle task.

Am I able to cross compile Kotlin/Native to arbitrary targets? For instance with Rust (uses LLVM so it's a decent parallel) allows me to specify custom targets, and the linker to use with that target

Could anyone help me? I write native library. I have a header with struct, which has follow line:

PstFile (*PstFile)(const char* filePath, const char* mode);

When I call this constructor in C code I pass 2 string:

PstFile.PstFile("/home/evgeni/Projects/SAGO/NLC/source.pst", "rb");

But in my library I get another string:

@&�9�

and

rb

if I swap the parameters, I get another string:

@���~

and

/home/evgeni/Projects/SAGO/NLC/source.pst

. Why first parameter anyhow?

Hi guys! Am I able to run ios tests with

CocoaPods

? The documentation says that if the module uses

CocoaPods

libraries, it can be build

only from Xcode

. 😞

Does anyone know how to use a .klib like a dependency? If I wanted to use 1.klib and 2.klib in a project3 and spit out an iOS framework that contains all of the code from 1, 2, &3 is that possible?

Has anyone tried kotlin native with Xcode 11 beta yet? I’m trying to use a framework with the cocoapods plugin and the header won’t compile.

I forget how to look this up, but if anybody has the Xcode 11 beta, to use the Xcode debug we’ll need the Xcode UUID. I’m not installing Xcode 11 beta just yet, but if we can find that UUID I can add to debugger. See towards bottom: https://github.com/touchlab/xcode-kotlin/blob/master/Kotlin.ideplugin/Contents/Info.plist

Hey guys! For fun, I've translated my AI assignment, which is basically a BFS graph search to Kotlin, and then compiled and benchmarked its runtime using the same input, compiled with different compilers. As you can see it's not even magnitudes slower in K/N, but also much slower if I compile it with the latest version. Can somebody elaborate on this? (I'm using Windows btw)

After upgrading to Kotlin 1.3.40 I got a

Compilation failed: GC overhead limit exceeded

when running

linkDebugTestMacos

. How do I higher the memory limit for the task/project? I have tried

org.gradle.jvmargs=-Xmx4g

in the gradle.properties. I use gradle 5.1.1

I’m getting the following exception when building. This happened after adding code to my project. I was able to narrow it down to a piece of code, but I cannot reproduce it in a sample project. Could anyone explain to me what this error means so I can find the cause? EDIT: I have enabled the new Objective C generics using

-Xobjc-generics

in my project. If I disable that then the issue is gone. Looks like this is a bug with the new generics.

Is there any example out there using iOS/macOS

NSNotificationCenter

with Kotlin/Native?

Hi all! Not sure if it was already asked but is there any consideration to take into account if I want to publish an iOS app to the Apple Store using a framework generated from Kotlin Native? what about bitcode? Is there something special to set in the gradle config for this framework? I just want to avoid having issues with the App being rejected from Apple Store because the framework doesn’t comply something. Thoughts?

I'm trying to integrate with

NSObject

observability, but I'm struggling to understand how this Objective-C method signature translates to Kotlin: https://developer.apple.com/documentation/objectivec/nsobject/1416553-observevalueforkeypath?language=objc It seems I need to declare it in an

NSObject

subclass for

addObserver

to work: https://developer.apple.com/documentation/objectivec/nsobject/1412787-addobserver?language=objc Can anyone help me?