Is it possible to split the multiplatform code, to have multiple modules?

👋 Hello, I'm currently running into an issue where I have a simple test KMM project (depending on coroutines, ktor, serialization and decompose/mvikotlin) where things are fine on the Android side but on the iOS side things seem a bit odd. The build job (from the KMM plugin) for iOS seems to be successful for the shared module

> Task :shared:compileKotlinIos
> Task :shared:linkDebugFrameworkIos
> Task :shared:syncFramework

BUILD SUCCESSFUL in 35s
3 actionable tasks: 3 executed

But then as soon as it starts building the swift app (unmodified demo app):

CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler (in target 'iosApp' from project 'iosApp')

It keeps throwing a bunch of

<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "Headers/shared.h"
        ^
/Users/xxx/Prototype/TestBaseApp/shared/build/cocoapods/framework/shared.framework/Headers/shared.h:1337:37: error: expected identifier
- (instancetype)initWithDEBUG:(BOOL)DEBUG APPLICATION_ID:(NSString *)APPLICATION_ID BUILD_TYPE:(NSString *)BUILD_TYPE FLAVOR:(NSString *)FLAVOR VERSION_CODE:(int32_t)VERSION_CODE VERSION_NAME:(NSString *)VERSION_NAME GIT_HASH:(NSString *)GIT_HASH MY_API_BUILD_ID:(NSString *)MY_API_BUILD_ID MY_API_CLIENT_ID:(NSString *)MY_API_CLIENT_ID MY_API_CLIENT_NAME:(NSString *)MY_API_CLIENT_NAME PLATFORM:(NSString *)PLATFORM OS:(NSString *)OS OS_VERSION:(NSString *)OS_VERSION PHONE_BRAND:(NSString *)PHONE_BRAND PHONE_TYPE:(NSString *)PHONE_TYPE __attribute__((swift_name("init(DEBUG:APPLICATION_ID:BUILD_TYPE:FLAVOR:VERSION_CODE:VERSION_NAME:GIT_HASH:MY_API_BUILD_ID:MY_API_CLIENT_ID:MY_API_CLIENT_NAME:PLATFORM:OS:OS_VERSION:PHONE_BRAND:PHONE_TYPE:)"))) __attribute__((objc_designated_initializer));
                                    ^
<command line>:16:15: note: expanded from here
#define DEBUG 1
              ^
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "Headers/shared.h"
        ^
/Users/xxx/Prototype/TestBaseApp/shared/build/cocoapods/framework/shared.framework/Headers/shared.h:1359:27: error: expected member name or ';' after declaration specifiers
@property (readonly) BOOL DEBUG __attribute__((swift_name("DEBUG")));
                          ^
<command line>:16:15: note: expanded from here
#define DEBUG 1
              ^
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "Headers/shared.h"

and keeps repeating a few times complaining about the things in

Headers/shared.h

and finally ending with:

/Users/xxx/Prototype/TestBaseApp/iosApp/iosApp/ContentView.swift:2:8: error: could not build Objective-C module 'shared'
import shared
       ^

** BUILD FAILED **


The following build commands failed:
	CompileSwift normal x86_64 /Users/xxx/Prototype/TestBaseApp/iosApp/iosApp/iOSApp.swift
	CompileSwift normal x86_64 /Users/xxx/Prototype/TestBaseApp/iosApp/iosApp/ContentView.swift
	CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler

Any thoughts on if it is some kotlin syntax the compiler doesnt like or how I can make the compiler be a bit more verbose to point out what it is struggling with? (I'm using kotlinVersion 1.5.21 and coroutines 1.5.0-native-mt)

Hi, what is the prettiest way to check if I'm on main thread (and throw otherwise)? I guess inside coroutine it should be sth like:

check(coroutineContext[ContinuationInterceptor] === Dispatchers.Main) { "TreeUiModel.logic must run o main!" }

But how to do it outside? (from regular function without coroutine scope/context)

Hi, I am having issues with cocoapods integration. Below is the cocoapods block in build.gradle.kts file

cocoapods {
    summary = ""
    homepage = ""
    frameworkName = ""

    pod("Mixpanel")
    pod("FirebaseCore")
    pod("FirebaseMessaging")
    pod("SSZipArchive")
}

I get the following error when running gradle sync.

Exception in thread "main" java.lang.Error: /var/folders/ny/hf6sbtc5337bl6g_tcy7kcg80000gp/T/4577319926544642637.m:1:9: fatal error: module 'FirebaseCore' not found

   

at org.jetbrains.kotlin.native.interop.indexer.UtilsKt.ensureNoCompileErrors(Utils.kt:152)

    at org.jetbrains.kotlin.native.interop.indexer.ModuleSupportKt.getModulesASTFiles(ModuleSupport.kt:68)     at org.jetbrains.kotlin.native.interop.indexer.ModuleSupportKt.getModulesInfo(ModuleSupport.kt:14)     at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.buildNativeLibrary(main.kt:515)     at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.processCLib(main.kt:266)     at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.interop(main.kt:76)     at org.jetbrains.kotlin.cli.utilities.InteropCompilerKt.invokeInterop(InteropCompiler.kt:45)     at org.jetbrains.kotlin.cli.utilities.MainKt.mainImpl(main.kt:38)     at org.jetbrains.kotlin.cli.utilities.MainKt.main(main.kt:60)

Hi, for the iOS framework distribution, some projects use the "regular framework" and just add in their exports like this: ( https://kotlinlang.org/docs/mpp-build-native-binaries.html#export-dependencies-to-binaries )

iosTarget("ios") {
    binaries {
        framework {
            baseName = "shared"
            export("com.arkivanov.decompose:decompose:0.3.1")
            export("com.arkivanov.essenty:lifecycle:0.1.2")
        }
    }
}

But what if I created my projects with the KMM plugin which by default sets it to the "CocoaPods dependency manager" how would I add those exports?

cocoapods {
    summary = "Some description for the Shared Module"
    homepage = "Link to the Shared Module homepage"
    ios.deploymentTarget = "14.1"
    frameworkName = "shared"
    podfile = project.file("../iosApp/Podfile")

    // How to include the same exports?
}

Hi, how can I use GraphQL in KMM projects. Because Apollo requires iOS 13+ we’re looking for an alternative.

Anyone using the latest version Kmm with Ktor and serialization ? what dependencies are you using in your build.gradle

Is it possible to use an iOS library that is written completely with swift in shared module?

Hey! I am using this guide to include SQLCipher in my project. At first it worked fine until I added my first migration. Now when I run my code it throws out expection on iOS:

[logging] file is not a database in "PRAGMA journal_mode"
error while compiling: PRAGMA journal_mode | error code SQLITE_NOTADB
co.touchlab.sqliter.interop.SQLiteExceptionErrorCode: error while compiling: PRAGMA journal_mode

Has anyone encountered the same issue?

Hi there!, I’m using a code that uses Metal or OpenGL depending on if this runs on iphone or iphonesimulator. What’s the KMM approach to do this kind of

ifdef

?

Hi Team…I am new to multiplatform, I have a bootstrap CSS template. Can anybody tell me, If I can use that in Kotlim MM

why does allTest not fail if it failed previously? I worked around (I still let it fail if it failed without the need to execute the tests again) but I realised that gradle's test task does not have the same behaviour. And what surprised me even more is that :jvmTest also executes the test again if it failed previously.

Already asked in the native channel...but no answer this so: Does anybody knows how generate more or less meaningful code coverage reports for iOS in KMM projects? I played with a little bit based on the JetBrains sample project, but I get always 100% in my own example which has deliberate blindspots or it simply breaks under if I only something partially for iOS.

I am trying to get atomicfu and/or stately working in my common module. i add the implementation lines, but they show as not available in the code. anybody have an example of using these from kmm common module?

Adding a dependency to my commonMain, breaks the source root (no code checking, no autocompletion), and just this one dependency. Before raising an issue on github, what can be the cause of this? Is something on my end?

Is there any library to convert models to GraphQL queries? We want to use Ktor not Apollo.

Hello, if I’ve been building a Kotlin Multiplatform Mobile library up until now, and I decide to start adding JS support, is it as simple as adding js() target in the Kotlin block of the build file? Or will there be complications since I started with the KMM template instead of the KMP template?

Does anyone know what the following error means? (everything else seems to compile):

Task :shared:compileKotlinMetadata FAILED

And I have another question 😅 , I’m trying to add some platform specific test, and I’m having some issues. • There is a strange

androidAndroidTestRelease

autogenerated source set • If I put the tests on

androidTest/kotlin

I cannot run the tests because AS says “No task available” • If I put the tests on

androidAndroidTest/kotlin

then AS runs the tests, but it looks like the tests are not included in the apk so no tests are run

Hi! I'm trying to build a multiplatform app, but I can't use some of libraries (such as javax.sound) in jvm sourceset. 🤔 Gradle build script is in thread.

Is "multiplatform" just a synonym for "iOS" at Jetbrains? I see very little evidence of them treating MS Windows as a first class platform.

I think I need a "multiplatform-getting-started" channel, because this sounds like a very simple question. It probably shows I don't understand. Where, and how, do I include a properly platform specific implementation of a function? I've got a class "GuTime" marked as expected in /shared/src/commonMain. The Android version seems happy in /shared/src/commonAndroid, or probably even /app/src/<etc>, but what about the iOS version? iOS doesn't have "systemtime" so I need an iOS route. I can't put that in /shared/src/commonIOS (can I?), and trying to put an "actual" class in /iOS/ complains about "actual". Yes, I know there's a Kotlin time package on the way, but how "alpha" is it? And that would only help for this specific issue.

When I rebuild the KMM project it says`Could not resolve all files for configuration '😒hared:lintClassPath'` The greadle version is 4.2.2 and the project runs with no problem.

Is there any library to mock objects in commonTest?

Is there a possibility to target android with kotlin, but having android sdk code accessible only from androidMain? Not from commonMain and others?

I'm not even sure how to frame a sensible question about Parcelize, KMM, and iOS. In essence I have a fundamental class marked as parcelable because I can have some of my basic data correctly packaged by my server, by the magic of KTor (and, to be fair, others) decoded completely and can then display it using that same structure in my Android app. KMM has an implementation of Parcelize, but what do I do for iOS??? I know I don't need data to be parcelable for iOS, but, as a basic data structure, I have it declared as expecting in commonMain and an actual declaration in adroidMain, and now iosMain is complaining it has no actual declaration. I'm beginning to suspect I shouldn't have that data put straight into a parcelable/parcelizable object, which means I've got extra overhead somewhere creating a new object from it, at least in my Android executable, but if that's the case, why does KMM go out of its way to provide a parcelizable construct?

Hello guys, are there any library to perform file tasks (create/read/write/delete) in Android/iOS???

I creat a new project with Compose multiplatform but I got this error

Anyone knows if it is possible to import existing KMM project having Android + iOS (with

xcworkspace

and

xcodeproj

) to AppCode with the KMM Plugin? In the blog post announcing the plugin they mention this:

We’re working on a solution that will allow you to hook up an existing 

.xcodeproj

 or 

.xcworkspace

 to the Gradle DSL to make it possible to easily connect existing Xcode projects with the common and Android parts.

But could not find anything else related to that.