👋 I’m trying to access

NSBundle.mainBundle.infoDictionary!!

values with using CoreFoundation constants like

kCFBundleVersionKey

but always getting

null

. If I use respective literal strings (like

"CFBundleVersion"

) it works like a charm. What am I missing here? The constants are

CFStringRef

, could it be the issue?

Hey everyone, the Google team is doing an exploratory UX research study on Kotlin multiplatform and the developer workflows involved. We'd love to recruit some volunteers from this group — please fill out this form if you're interested!

is there any way to call

NSData(base64Encoded:String)

from kotlin?

Friendly reminder — if you do Kotlin multiplatform development, the Google team would love to speak with you! Link to sign up here.

Hey folks, we started getting a crash in

(anonymous namespace)::garbageCollect(MemoryState*, bool)

after releasing a version of an iOS app with a fairly big chunk of new Kotlin/Native code. There’s a somewhat similar thread but our stack trace is different.

Does somebody know why these lines crash in Xcode 11.4.1?

let thisIsAKotlinInt: Any = KotlinInt(int: 3)
XCTAssertEqual(thisIsAKotlinInt as? KotlinInt, KotlinInt(int: 3))

I recently put together a sample that demonstrates a redux-like store using kotlin flows in a multi-platform project and rendering to SwiftUI views in a unidirectional data flow. It seems to be working great with one exception. State is updated as the flow collects / iterates but the UI never repaints until the flow completes. I'm suspecting it's in the single threaded nature of coroutines on iOS and that I need a newer build of coroutines native-mt. I'm making some assumptions there though. Curious if anyone has any ideas? Here is the project. https://github.com/CoreyKaylor/kotlin-mpp-flow-store

Sharing this here in case anyone can provide some input?

What’s the correct/safe way to get a

CFStringRef

(like the

kCFBundleNameKey

constant) as a Kotlin

String

?

Does the cocoapods plugin support pods with dashes in their name? e.g. Mapbox-iOS-SDK I get this error when I try to build from XCode:

> Task :shared:cinteropMapbox-iOS-SDKIos
Exception in thread "main" java.lang.Error: /var/folders/9c/t4r21hhn7y5fflv2v71n4zmr0000gn/T/tmp5889693057335845972.m:1:15: error: expected ';' after module name

I don't know if this has been asked or not regarding multiplatform, I also saw theres one question on stack overflow about it but no answer. Prior to XCode 11.4, Xcode was able to detect whether or not it needed to build the shared framework for

arm

or

x86

however since the upgrade it no longer can do this. My work around since then has just been to run a shell command that builds the framework for which architecture I want when switching between device and simulator. Anyone have any pointers? is this a known issue?

I'm trying to create a Kotlin subclass of

MGLShapeSource

from the Mapbox SDK.

MGLShapeSource

is a subclass of

MGLSource

which has an initializer called

initWithIdentifier

. When I try to create an instance of my Kotlin subclass, I get an exception thrown saying

initWithIdentifier: is not implemented in Shared....KotlinSubclass0

which seems to be the initializer from

MGLSource

so I created another constructor in my subclass to override that initializer but now I get a

EXC_BAD_ACCESS

when that initializer is called. Maybe this is just because I'm not quite as familiar with how Obj-C handles initialization, but I'm not really sure what's happening here?

Hello, my team is evaluating to use Kotlin Multiplatform for our Android and iOS apps. One concern I have is in regards the ability to link against multiple Kotlin Multiplatform libraries in the future. I saw there is a limitation on iOS specifically looks like: https://github.com/JetBrains/kotlin-native/issues/2423 it appears that it may have been fixed on a more recent version of Kotlin 1.3.70, could anyone please confirm?

When building against multiple KMP libraries on iOS, does the final application size increase linearly? I've seen the minimum .framework target I can generate for iOS is around ~2MB. If building against N KMP libraries does the iOS application binary end up being N * ~2MB larger? If so, that would be a concern in using multiple KMP libraries on iOS, would it be possible to do any optimizations, perhaps combining into a single .framework?

Hello, I am bit new to Kotlin multi platform and trying to create a multi platform module to be used in our iOS and android apps. I have few questions if somebody can provide me more info or redirect me to correct documentation: 1. How can I specify minimum iOS version & target iOS version for iOS frameworks rather than going with default one? 2. Is there any limitation on what Apple's iOS native framework we can use from Kotlin module? I was trying to import 

Combine

 framework but was not able to do.

Does anyone have any suggestions on how to go about creating a single .framework from a bunch of different .klib files?

do I need to use the cocoapods plugin to access a third party iOS library in order to wrap it? is there a way without cocoapods?

hey folks, is there a way to set a custom Obj-C/Swift name to a class/interface in Kotlin code?

I’m trying to build an umbrella framework that bundles two subprojects. Here’s my project structure:

|- shared-libraries
 \- network
  |- network-core
  |  |- src
  |  |  \- commonMain
  |  \- build.gradle.kts
  |
  |- network-ktor
  |  |- src
  |  |   \- commonMain
  |  \- build.gradle.kts
  |
   \- build.gradle.kts

The

network

module build script has the following dependencies: •

api(project(":shared-libraries:network:network-core"))

•

api(project(":shared-libraries:network:network-ktor"))

Basically,

network

is an umbrella module that contains no source code. For Android, all works fine. I’m able to import

:shared-libraries:network

without issues. For iOS, I’m leveraging

FatFrameworkTask

(registered as

fatFramework

) to build the umbrella framework. When I run

./gradlew :shared-libraries:network:fatFramework

, Gradle compiles the code but it doesn’t create any iOS framework. I’m not sure why. Is there a better/easier way to create an iOS umbrella framework for a project structure like the one above?

folks, I’m getting build error in the

compileIosMainKotlinMetadata

task. Basically a bunch of

unresolved reference

errors as if I were importing something that doesn’t exist (even though it’s there and

compileKotlinIos<platform>

works flawlessly). Any ideas what might be causing this?

Getting "Unresolved reference: Class" when building the "compileKotlinIos" step - it seems the "Class" is not resolved for iOS build step, does it need a separate dependency? Code: "operator fun <T : Any> get(apiInterface: Class<T>): LazyComponent<T>" - works fine on a non KMP build.

and i can drag and drop that framework into an iOS demo app, but when using the package manager, it can’t find the module when trying to import

Can one create a framework for mac catalyst? I’ve built the target:

macosX64("mac") {
    binaries {
        framework("mac")
    }
}

but when I try to import the framework it says:

/Users/*/Projects/RTE/apod-kampkit/ios/ApodKMP.xcodeproj Building for Mac Catalyst, but the linked and embedded framework 'mac.framework' was built for macOS. You may need to restrict the platforms for which this framework should be linked and embedded in the target editor, or replace it with an XCFramework that supports both platforms.

I’m a bit confused since it clearly says that the framework is (correctly?) built for macOS. I’ve also tried to put this framework in a normal macOS app project and it works

I’m getting

Undefined symbols for architecture arm64

(and x86_64) when attempting to build my project in xcode that depends on

TensorFlowLiteObjC

pod, which itself depends on

TensorFlowLiteC

which is a binary framework, The classes being referred to in the error are part of the

ObjC

wrapper framework which is provided as source. Is there any where I can look to help resolve this? I’ve done a clean

pod install

and cleaned the xcode build directory but I’m still hitting the same issue (for both a real device and for simulator)

At KotlinConf 2019 Andrey Breslav said, that in 2020 a Android Studio Plugin to debug Kotlin iOS Apps will be released, does anybody know when this will be released?

Does anyone have experience setting up something like Sentry or Bugsnag with a KMP project on iOS? do I need to do something special to get proper stack traces?

Is there any serious plan to make AppCode have decent Kotlin/Native debugging? I just tried 2020.2 with the 1.4.0-release-AppCode-202.6397.122-7 kotlin/native plugin with a fresh “Single View app with a Kotlin/Native framework” template. It still does not support the variable view (though rather than hang, it at least says “not available”).

Hello, it looks like KMP produces different binaries per each iOS architecture. Right now our iOS team has to switch between x86 and arm64 depending on the targets and having some problems detecting the correct one. I saw this thread https://github.com/JetBrains/kotlin-native/issues/2574 about a universal binary generator using lipo. I just wanted to know if anyone else had found alternatives or if that's the way to go, thanks!

I am trying to use

WKScriptMessageHandlerProtocol

which has one abstract function defined, but when building the project it wants me to implement all of the members for NSObject? Does anyone know how to fix that?