kotlinlang #touchlab-tools

Hi guys, currently I'm trying to update 1.3.71 project to kotlin 1.4, specifically 1.4.21 (same as latest commit in Kampkit is using). I'm getting following error during build: "Could not resolve org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2-native-mt." I don't understand it though, building and running kampkit code works OK but in my project it fails to resolve the reference, while I am using same repositories / dependencies on a classpath as kampkit. Any ideas ? Thanks

Peter Kucera

02/25/2021, 2:29 PM

Hi all. Would you recommend using sealed classes in multiplatform project? Afaik on iOS there is no concept of sealed class, so I’m wondering how swift/objective c code can be integrated with Kotlin/Native code that is taking sealed class as an argument/returning it.

Joseph Roffey

03/01/2021, 3:37 PM

Hello, after I run

./gradlew test

, I see a test report that is generated into

build/reports/tests/testDebugUnitTest/index.html

However, when I look at this, it does not make the difference between the results of the Android tests and the iOS Tests clear to me. Furthermore, when I add a line

assertTrue(false)

into

iosTest > KoinTest > checkAllModules

it does not register any failures, whereas when I add the same line into the

androidTest

equivalent the test does fail. Should I be running the iOS tests differently / does anyone know whether I have misunderstood something? I was under the impression that when I run the gradle tests it should test both the iOS and the Android KoinTest methods. Sorry if I’m missing something obvious.

Lena Stepanova

03/08/2021, 4:24 PM

Hi, I'm trying to setup Koin in my project following KampKit. There are these two lines in common Koin:

val doOnStartup = koin.get<() -> Unit>() // doOnStartup is a lambda which is implemented in Swift on iOS side
doOnStartup.invoke()

When I try running my Android project, it crashes with org.koin.core.error.NoBeanDefFoundException: No definition found for class:'kotlin.jvm.functions.Function0'. Check your definitions! If I remove those two lines, it runs fine. I see that I can remove this doOnStartup both from common Koin and iOS code, because in KampKit it doesn't do anything important. But why doesn't it work in my project, but in KampKit it does?

Lena Stepanova

03/09/2021, 6:00 PM

Hello everyone! May be it's a better question for Multiplatform channel, but as my test project is mostly based on KampKit, I'll post it here. I took KampKit as foundation and added some features from PeopleInSpace and MultiplatformPlayground. The biggest change was probably adding jetpack compose dependencies to android build.gradle. Now when I try running android app, the project builds and even says "Launch succeeded", but the app does not start. There is an app icon created, but when I click, I get "App isn't installed". Can anyone give me a hint why this is happening? Here is the reproducer https://github.com/hlnstepanova/testKMP

Archie

03/10/2021, 2:24 PM

Hi Guys, I am trying to use Koin Multiplatform for dependency injection. Is there a way to add to the Koin Module when using it in kotlin so I could add in ios specific dependencies?

Archie

03/11/2021, 10:29 AM

Hi Guys, I tried converting one of our project's Module which also uses

Jetpack Compose

. I tried to convert the module to a

Multiplatform Module

and move all android related code to

androidMain

but I when building the app

Compose

throws error. Also adding

kotlin("android")

in the

Kotlin Multiplatform

module throw and error

org.gradle.api.GradleException: Please initialize at least one Kotlin target

. Is there a way to work around this? Or is it better to create a seperate KMM module for the module and a serparate Android specific module for Android UI? Like:

:feature1
 :feature1KMM

?? Thanks in advance.

Shalom Halbert

03/23/2021, 9:45 PM

Is there a way to create a PR? Figured it’s worth contributing something as small as removing references to Jcenter

Martins Iroka

04/16/2021, 11:40 AM

Hello, I cloned the repo and ran both android and ios from android studio. But when I try to run it from xcode, I get an error found in the image attached.

wellingtoncosta

05/28/2021, 7:28 PM

Hi all! Thanks @Erik Zambrano for inviting me to this channel!

Lena Stepanova

06/11/2021, 1:35 PM

2021-06-11 15:15:27.627354+0200 TomE[409:67089] Debug: (DatabaseHelper) Getting all trackings from database
org.koin.core.error.InstanceCreationException: Could not create instance for [Single:'de.comp.proj.shared.ktor.TrackingKtorApi']
  at 0  shared               0x00000001034297f8 kfun:kotlin.Exception#<init>(kotlin.String?;kotlin.Throwable?){} + 120
  at 1  shared               0x000000010380ccc0 kfun:org.koin.core.error.InstanceCreationException#<init>(kotlin.String;kotlin.Exception){} + 120
  at 2  shared               0x000000010380e134 kfun:org.koin.core.instance.InstanceFactory#create(org.koin.core.instance.InstanceContext){}1:0 + 1472
  at 3  shared               0x000000010380e840 kfun:org.koin.core.instance.SingleInstanceFactory#create(org.koin.core.instance.InstanceContext){}1:0 + 268
  at 4  shared               0x000000010380ed0c kfun:org.koin.core.instance.SingleInstanceFactory.get$lambda-0#internal + 208
  at 5  shared               0x000000010380edb8 kfun:org.koin.core.instance.SingleInstanceFactory.$get$lambda-0$FUNCTION_REFERENCE$244.invoke#internal + 72
  at 6  shared               0x000000010380ef1c kfun:org.koin.core.instance.SingleInstanceFactory.$get$lambda-0$FUNCTION_REFERENCE$244.$<bridge-UNN>invoke(){}#internal + 68
  at 7  shared               0x0000000103829608 kfun:org.koin.mp.KoinPlatformTools#synchronized(kotlin.Any;kotlin.Function0<0:0>){0§<kotlin.Any?>}0:0 + 232
  at 8  shared               0x000000010380eae8 kfun:org.koin.core.instance.SingleInstanceFactory#get(org.koin.core.instance.InstanceContext){}1:0 + 364
  at 9  shared               0x0000000103815cf4 kfun:org.koin.core.registry.InstanceRegistry#resolveInstance(kotlin.String;kotlin.Function0<org.koin.core.parameter.DefinitionParameters>?){0§<kotlin.Any?>}0:0? + 508
  at 10 shared               0x000000010381f090 kfun:org.koin.core.scope.Scope.resolveInstance#internal + 840
  at 11 shared               0x000000010381ecb8 kfun:org.koin.core.scope.Scope#get(kotlin.reflect.KClass<*>;org.koin.core.qualifier.Qualifier?;kotlin.Function0<org.koin.core.parameter.DefinitionParameters>?){0§<kotlin.Any?>}0:0 + 1860
  at 12 shared               0x00000001038d3c38 kfun:de.comp.proj.shared.models.GeofencingModel.<init>$<anonymous>_1-1#internal + 800
  at 13 shared               0x00000001038d4c30 kfun:de.comp.proj.shared.models.GeofencingModel.$<init>$<anonymous>_1-1$FUNCTION_REFERENCE$169.invoke#internal + 152
  at 14 shared               0x000000010345da40 kfun:kotlin.native.concurrent.FreezeAwareLazyImpl.getOrInit#internal + 748
  at 15 shared               0x000000010345e0e4 kfun:kotlin.native.concurrent.FreezeAwareLazyImpl#<get-value>(){}1:0 + 500
  at 16 shared               0x00000001038ce674 kfun:de.comp.proj.shared.models.GeofencingModel.<get-trackingApi>#internal + 276
  at 17 shared               0x00000001038d04f4 kfun:de.comp.proj.shared.models.GeofencingModel.$sendGeofencingDataCOROUTINE$51#invokeSuspend(kotlin.Result<kotlin.Any?>){}kotlin.Any? + 460
  at 18 shared               0x00000001038d095c kfun:de.comp.proj.shared.models.GeofencingModel#sendGeofencingData(kotlin.collections.List<de.comp.proj.shared.entity.TrackingData>){} + 292
  at 19 shared               0x00000001038cfda4 kfun:de.comp.proj.shared.models.GeofencingModel.$saveGeofencingDataCOROUTINE$50#invokeSuspend(kotlin.Result<kotlin.Any?>){}kotlin.Any? + 1668
  at 20 shared               0x000000010345114c kfun:kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(kotlin.Result<kotlin.Any?>){} + 560
  at 21 shared               0x00000001035c7fd0 kfun:kotlinx.coroutines.internal#resumeCancellableWith__at__kotlin.coroutines.Continuation<0:0>(kotlin.Result<0:0>;kotlin.Function1<kotlin.Throwable,kotlin.Unit>?){0§<kotlin.Any?>} + 2556
  at 22 shared               0x00000001035c8124 kfun:kotlinx.coroutines.internal#resumeCancellableWith$default__at__kotlin.coroutines.Continuation<0:0>(kotlin.Result<0:0>;kotlin.Function1<kotlin.Throwable,kotlin.Unit>?;kotlin.Int){0§<kotlin.Any?>} + 240
  at 23 shared               0x00000001035f7bc0 kfun:kotlinx.coroutines.internal.shareableInterceptedResumeCancellableWith$lambda-0#internal + 232
  at 24 shared               0x00000001035f7d78 kfun:kotlinx.coroutines.internal.$shareableInterceptedResumeCancellableWith$lambda-0$FUNCTION_REFERENCE$466.invoke#internal + 72
  at 25 shared               0x00000001035f7edc kfun:kotlinx.coroutines.internal.$shareableInterceptedResumeCancellableWith$lambda-0$FUNCTION_REFERENCE$466.$<bridge-UNN>invoke(){}#internal + 68
  at 26 shared               0x000000010345cdd4 WorkerLaunchpad + 192
  at 27 shared               0x0000000103a7a330 _ZN6Worker19processQueueElementEb + 2364
  at 28 shared               0x0000000103a7d980 Kotlin_Worker_processQueueInternal + 116
  at 29 shared               0x000000010345f780 kfun:kotlin.native.concurrent.Worker#processQueue(){}kotlin.Boolean + 60
Caused by: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen de.comp.proj.shared.ktor.TrackingApi@82553128
  at 0  shared               0x000000010343145c kfun:kotlin.Throwable#<init>(kotlin.String?){} + 96
  at 1  shared               0x0000000103429750 kfun:kotlin.Exception#<init>(kotlin.String?){} + 92
  at 2  shared               0x00000001034299c0 kfun:kotlin.RuntimeException#<init>(kotlin.String?){} + 92
  at 3  shared               0x000000010345bca4 kfun:kotlin.native.concurrent.InvalidMutabilityException#<init>(kotlin.String){} + 92
  at 4  shared               0x000000010345d0a0 ThrowInvalidMutabilityException + 336
  at 5  shared               0x0000000103a6404c MutationCheck + 156
  at 6  shared               0x00000001038b7e24 kfun:de.comp.proj.shared.ktor.TrackingApi#<init>(co.touchlab.kermit.Kermit){} + 472
  at 7  shared               0x000000010385d720 kfun:de.comp.proj.shared.coreModule$lambda-8$lambda-2#internal + 652
  at 8  shared               0x0000000103860754 kfun:de.comp.proj.shared.$coreModule$lambda-8$lambda-2$FUNCTION_REFERENCE$65.invoke#internal + 188
  at 9  shared               0x000000010380ded0 kfun:org.koin.core.instance.InstanceFactory#create(org.koin.core.instance.InstanceContext){}1:0 + 860
  at 10 shared               0x000000010380e840 kfun:org.koin.core.instance.SingleInstanceFactory#create(org.koin.core.instance.InstanceContext){}1:0 + 268
  at 11 shared               0x000000010380ed0c kfun:org.koin.core.instance.SingleInstanceFactory.get$lambda-0#internal + 208
  at 12 shared               0x000000010380edb8 kfun:org.koin.core.instance.SingleInstanceFactory.$get$lambda-0$FUNCTION_REFERENCE$244.invoke#internal + 72
  at 13 shared               0x000000010380ef1c kfun:org.koin.core.instance.SingleInstanceFactory.$get$lambda-0$FUNCTION_REFERENCE$244.$<bridge-UNN>invoke(){}#internal + 68
  at 14 shared               0x0000000103829608 kfun:org.koin.mp.KoinPlatformTools#synchronized(kotlin.Any;kotlin.Function0<0:0>){0§<kotlin.Any?>}0:0 + 232
  at 15 shared               0x000000010380eae8 kfun:org.koin.core.instance.SingleInstanceFactory#get(org.koin.core.instance.InstanceContext){}1:0 + 364
  at 16 shared               0x0000000103815cf4 kfun:org.koin.core.registry.InstanceRegistry#resolveInstance(kotlin.String;kotlin.Function0<org.koin.core.parameter.DefinitionParameters>?){0§<kotlin.Any?>}0:0? + 508
  at 17 shared               0x000000010381f090 kfun:org.koin.core.scope.Scope.resolveInstance#internal + 840
  at 18 shared               0x000000010381ecb8 kfun:org.koin.core.scope.Scope#get(kotlin.reflect.KClass<*>;org.koin.core.qualifier.Qualifier?;kotlin.Function0<org.koin.core.parameter.DefinitionParameters>?){0§<kotlin.Any?>}0:0 + 1860
  at 19 shared               0x00000001038d3c38 kfun:de.comp.proj.shared.models.GeofencingModel.<init>$<anonymous>_1-1#internal + 800
  at 20 shared               0x00000001038d4c30 kfun:de.comp.proj.shared.models.GeofencingModel.$<init>$<anonymous>_1-1$FUNCTION_REFERENCE$169.invoke#internal + 152
  at 21 shared               0x000000010345da40 kfun:kotlin.native.concurrent.FreezeAwareLazyImpl.getOrInit#internal + 748
  at 22 shared               0x000000010345e0e4 kfun:kotlin.native.concurrent.FreezeAwareLazyImpl#<get-value>(){}1:0 + 500
  at 23 shared               0x00000001038ce674 kfun:de.comp.proj.shared.models.GeofencingModel.<get-trackingApi>#internal + 276
  at 24 shared               0x00000001038d04f4 kfun:de.comp.proj.shared.models.GeofencingModel.$sendGeofencingDataCOROUTINE$51#invokeSuspend(kotlin.Result<kotlin.Any?>){}kotlin.Any? + 460
  at 25 shared               0x00000001038d095c kfun:de.comp.proj.shared.models.GeofencingModel#sendGeofencingData(kotlin.collections.List<de.comp.proj.shared.entity.TrackingData>){} + 292
  at 26 shared               0x00000001038cfda4 kfun:de.comp.proj.shared.models.GeofencingModel.$saveGeofencingDataCOROUTINE$50#invokeSuspend(kotlin.Result<kotlin.Any?>){}kotlin.Any? + 1668
  at 27 shared               0x000000010345114c kfun:kotlin.coroutines.native.internal.BaseContinuationImpl#resumeWith(kotlin.Result<kotlin.Any?>){} + 560
  at 28 shared               0x00000001035c7fd0 kfun:kotlinx.coroutines.internal#resumeCancellableWith__at__kotlin.coroutines.Continuation<0:0>(kotlin.Result<0:0>;kotlin.Function1<kotlin.Throwable,kotlin.Unit>?){0§<kotlin.Any?>} + 2556
  at 29 shared               0x00000001035c8124 kfun:kotlinx.coroutines.internal#resumeCancellableWith$default__at__kotlin.coroutines.Continuation<0:0>(kotlin.Result<0:0>;kotlin.Function1<kotlin.Throwable,kotlin.Unit>?;kotlin.Int){0§<kotlin.Any?>} + 240

Rak

07/14/2021, 2:29 PM

I am about to try out KampKit as the foundation for our KMM project, should I use AS 4.2.2 or the latest Bumblebee release?

Robert Veres

08/12/2021, 7:32 AM

Hi, I’m quite new to Android and Swift, but I have a basic Android and Swift app built on Firebase Firestore. I’m thinking about using KampKit for my project, but haven’t been able to run the demo project. I have a M1 Mac, it seems the errors I get are related to that. Is there somewhere a guide how to configure KampKit to work well on M1? Thanx a lot.

MarkRS

08/12/2021, 3:49 PM

Why are KaMPKit/shared/src/androidMain/kotlin/co/touchlab/kampkit/*PlatformAndroid.kt* and KaMPKit/shared/src/iosMain/kotlin/co/touchlab/kampkit/*PlatformiOS.kt identical?* Doesn't this mean they could/should be in commonMain? Or does this mean I've misunderstood something fundamental?

MarkRS

08/13/2021, 2:36 PM

The iOS "Foundation" imports in KaMPKit are written just like that, "import Foundation", but as I'm writing code AS is creating the imports as "import platform.Foundation". Have I got something (else) wrong?

MarkRS

08/20/2021, 1:14 PM

I notice you don't have the recommended "PackageForXCode" Gradle task and I don't see how the XCode stuff can be generated by what you do have. Is the development pod manually generated? Trying to use KaMPKit as an example my own project has XCode complain that it doesn't know how to build the native target 😞

MarkRS

09/30/2021, 1:15 PM

Quiet in here, eh? 🙂 Do yous guys use Intellij? I ask because (I'm using AS, and) I notice your gradle wrapper file specifies gradle-7.1-all.zip , which seems to work on AS, but then again it's just asked me if I want to upgrade from 7.0.1.... which seems odd.

Rak

10/19/2021, 1:03 PM

Hi, just created my first project using the Kampkit. Android builds fine and launches but iOS complains with the message: Showing Recent Messages An exception occurred applying plugin request [id: ‘com.android.application’]

Failed to apply plugin ‘com.android.internal.application’.

> Android Gradle plugin requires Java 11 to run. You are currently using Java 1.8. You can try some of the following options: - changing the IDE settings. - changing the JAVA_HOME environment variable. - changing

org.gradle.java.home

gradle.properties

. JAVA_HOME is set to java 11 so not sure what to do. This is when i try to run from XCode.

Rak

10/20/2021, 8:24 AM

Hi, not sure if this a question for this channel or Koin but going through the code, I noticed that constructor injection is NOT used and instead by inject and inheriting from KoinComponent. Is there a reason for this? I have always tried to restrict the use of framework classes in my code and in my other (non KMM) projects, Koin was used via constructor injection

Kirill Langer

10/20/2021, 4:29 PM

Hi. I'm trying to build the KaMPKit project for iOS in xcode but the build keeps failing with this error:

ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/13.0.0/lib/darwin//libclang_rt.ios.a, missing required architecture x86_64 in file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/13.0.0/lib/darwin//libclang_rt.ios.a (4 slices)

Any idea what this means? I have tried deleting and reinstalling

Pods

with no success so far.

Rak

10/21/2021, 1:22 PM

Hi, I have setup KampKit and started to add my own request. In Android Studio I can see the changes but when I switch to XCode and run the app, the changes have not propogated. Is there something I need to do in XCode to see the latest code?

Rak

11/01/2021, 4:01 PM

Hi, I am going through the tests to see how they work. The BreedModelTest runs and passes without a device or emulator, how is this possible when it needs a database?

Rak

11/02/2021, 9:58 AM

Hi, is it ok to use the project for prod code? Or is it meant to be a playground to try things and then create your own KMM project?

Rak

11/08/2021, 10:35 AM

Hi, there is a todo about using the mock engine for testing the network calls. I could really do with it but I’m stuck on working out how to swap out the engine. Specifically, what do I pass to iOS?

Rak

11/09/2021, 4:36 PM

Hi, so I have failing tests when running on the command line for iOS. They work fine in the IDE. The tests are checking the correct exceptions are being thrown. Any ideas?

Rak

11/10/2021, 7:14 AM

Here’s the output from running the test in the IDE: 07:12 Executing tasks: [cleanIosTest, iosTest] in project /Users/rakesh.patel/StudioProjects/kmm/fluffy-guacamole/shared 07:12 Gradle build finished in 2 s 451 ms 07:12 Tests passed: 4 07:12 Tests passed: 4 07:12 Tests passed: 4 07:12 Tests passed: 4

aiidziis

11/10/2021, 3:06 PM

Hey! Is

co.touchlab:kermit-crashlytics:0.1.9

published? When trying to reference it I get:

Could not GET '<https://kotlin.bintray.com/kotlinx/co/touchlab/kermit-crashlytics/0.1.9/kermit-crashlytics-0.1.9.pom>'. Received status code 403 from server: Forbidden

Or is it published in different repository?

Rak

11/10/2021, 7:25 PM

Hi, a final update on my issues with running tests for iOS in the IDE vs command line. I rewrote my code to not rely on throwing exceptions across methods (and instead use the Result class) and I no longer have any issues. I don’t know why I had this problem. If i get time I will try and create a github repo that replicates the issue.

Rak

11/16/2021, 8:23 AM

HI, is

// Revert to just ios() when gradle plugin can properly resolve it

still an issue?

saket

11/16/2021, 4:50 PM

q for touchlab folks: do you recommend disposing iso-collections to avoid memory leaks? I noticed this section under `stately-isolate`:

You must dispose of IsolateState instances to avoid memory leaks.

Title

saket

11/16/2021, 4:50 PM

q for touchlab folks: do you recommend disposing iso-collections to avoid memory leaks? I noticed this section under `stately-isolate`:

You must dispose of IsolateState instances to avoid memory leaks.

russhwolf

11/16/2021, 5:40 PM

I'm not sure we expose an API to enable that. But maybe we should. I believe the thing you want to avoid leaking is the

StableRef

inside

StateHolder

, but I don't think any of the collections expose a way to clear it. Are you having specific issues or just looking for best practice? Kevin knows that stuff much better than me but he's on vacation.

Oops slack ate my link. This stableref: https://github.com/touchlab/Stately/blob/main/stately-isolate/src/nativeCommonMain/kotlin/co/touchlab/stately/isolate/Platform.kt#L13

saket

11/16/2021, 6:35 PM

Are you having specific issues or just looking for best practice?

best practice! I've been using iso collections in my project but I never dispose them. I'm now thinking if that's something I should be doing. this discussion originally started here where I'm trying to convince @evant to use iso collections in kotlin-inject: https://github.com/evant/kotlin-inject/issues/167#issuecomment-970449637

russhwolf

11/16/2021, 6:47 PM

hm. It's a tough thing to invest a lot in right now with the new memory model on the horizon. One thing to watch out for: the new model still respects

freeze()

calls that exist in your code. So that's probably why you still see

InvalidMutabilityException

For possible workarounds take a look at https://github.com/JetBrains/kotlin/blob/master/kotlin-native/NEW_MM.md#unexpected-object-freezing

I don't know that I'd want to ship that yet though

saket

11/16/2021, 8:38 PM

Yeah that's fair. I was under the impression that iso-collections are a drop-in solution.

View count: 3