what may the cause of "Unresolved reference: Compo...

# multiplatform

[Romão]

what may the cause of "Unresolved reference: Composable" in iosMain? androidx.compose.runtime.Compose is imported but the compiler outputs error

[Jeff Lockhart]

Share your build.gradle.kts file. The Compose dependency might be declared in the wrong source set.

[Romão]

plugins {
    kotlin("multiplatform")
    id("com.android.library")
    id("org.jetbrains.compose")
    id("com.squareup.sqldelight")
    id("dev.icerock.mobile.multiplatform-resources")
}

//@OptIn(org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi::class)
kotlin {
    //targetHierarchy.default()

    android {
        compilations.all {
            kotlinOptions {
                jvmTarget = "17"
            }
        }
    }

    targets.withType(org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget::class.java).all {
        binaries.withType(org.jetbrains.kotlin.gradle.plugin.mpp.Framework::class.java).all {
            export("dev.icerock.moko:mvvm-core:0.16.1")

        }
    }

    listOf(
        iosX64(),
        iosArm64(),
        iosSimulatorArm64()
    ).forEach {
        it.binaries.framework {
            baseName = "shared"
            isStatic = true
            export("dev.icerock.moko:resources:0.23.0")
            export("dev.icerock.moko:graphics:0.9.0")

        }
    }

    sourceSets {
        val commonMain by getting {
            dependencies {
                //put your multiplatform dependencies here
                implementation(compose.runtime)
                implementation(compose.foundation)
                implementation(compose.material3)
                implementation("org.jetbrains.kotlinx:atomicfu:0.21.0")
                implementation(compose.materialIconsExtended)
                @OptIn(org.jetbrains.compose.ExperimentalComposeLibrary::class)
                implementation(compose.components.resources)

                api("dev.icerock.moko:resources:0.23.0")


                implementation("com.squareup.sqldelight:runtime:1.5.5")
                implementation("com.squareup.sqldelight:coroutines-extensions:1.5.5")
                implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.0")
            }
        }
        /* val commonTest by getting {
             dependencies {
                 implementation(kotlin("test"))
             }
         }*/
        val androidMain by getting {
            dependencies {
                implementation("com.squareup.sqldelight:android-driver:1.5.5")
                implementation("androidx.appcompat:appcompat:1.6.1")

                implementation("androidx.activity:activity-compose:1.7.2")
            }
        }

        val iosX64Main by getting
        val iosArm64Main by getting
        val iosSimulatorArm64Main by getting
        val iosMain by creating{
            dependencies {
                implementation("com.squareup.sqldelight:native-driver:1.5.5")
            }
            dependsOn(commonMain) //make commonMain a dependency of iosMain
            iosX64Main.dependsOn(this)
            iosArm64Main.dependsOn(this)
            iosSimulatorArm64Main.dependsOn(this)
        }
        /* val iosX64Test by getting
         val iosArm64Test by getting
         val iosSimulatorArm64Test by getting
         val iosTest by creating {
             dependsOn(commonTest) //make commonTest a dependency of iosTest
             iosX64Test.dependsOn(this)
             iosArm64Test.dependsOn(this)
             iosSimulatorArm64Test.dependsOn(this)
         }*/
    }

}


android {
    namespace = "com.example.kmmphillippcontactsproject"
    compileSdk = 33
    defaultConfig {
        minSdk = 28
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }
}

sqldelight {
    database("ContactsDatabase") {
        packageName = "com.example.kmmphillippcontactsproject"
        sourceFolders = listOf("sqldelight")
    }
}


dependencies {
    implementation("androidx.core:core:1.10.1")

    commonMainApi("dev.icerock.moko:mvvm-core:0.16.1")
    commonMainApi("dev.icerock.moko:mvvm-compose:0.16.1")
    commonMainApi("dev.icerock.moko:mvvm-flow:0.16.1")
    commonMainApi("dev.icerock.moko:mvvm-flow-compose:0.16.1")
}

multiplatformResources {
    multiplatformResourcesPackage = "com.example.kmmphillippcontactsproject"
    multiplatformResourcesClassName = "SharedRes"
}

[Jeff Lockhart]

I don't see an obvious issue looking at your build script. I'd probably avoid defining dependencies in the top-level dependencies block as well as the kotlin.sourceSets. You should move implementation("androidx.core:core:1.10.1") to androidMain.dependencies. The dependencies.commonMainApi(...) dependencies can go under commonMain.dependencies as api(...).

[Jeff Lockhart]

You can use targetHierarchy.default(), which you have commented out to avoid the need to manually define iosMain by creating (can just be iosMain by getting) and you can remove the dependsOn calls.

[Romão]

i did what you recommend. Keeps outputting Unresolved reference: Composable, Much appreciated if you could have a look on the following repo https://github.com/tmromao/KMMPhillippContactsProject.git

[Romão]

i'm on a Mac Mini M1, Don't understand if it implies changes, or not, in the build.gradle.kts

[Romão]

import androids.compose.runtime.Composable displays "Composable" in a different colour, lighter than the other imports...

[Jeff Lockhart]

Is the repository public? The link is a 404.

[Morgane Soula]

Maybe try and ask Philipp on Instragram directly?

[Romão]

sorry Jeff L Now is public, please retry

[Romão]

yes @Morgane Soula that would be my next step. I'm learning the technology. Trying to setup a project file using moko and sqldelight to do a simple app but it's all SOs complicated. Very frustrating for someone that just want to build a simple app (school quizz) for Android and iOS

[Qamar A. Safadi]

Hey Tiago, you need to follow the same structure you are doing in your commenMain

[Romão]

Please elaborate Qamar S.

[Jeff Lockhart]

You can remove all of the dependsOn calls now using the targetHierarchy.default(), as this sets up the source set hierarchy for you.

You can also move the export(...) from

targets.withType(org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget::class.java).all {
    binaries.withType(org.jetbrains.kotlin.gradle.plugin.mpp.Framework::class.java).all {
        export("dev.icerock.moko:mvvm-core:0.16.1")

    }
}

into

it.binaries.framework {
    ...
}

as this is the only native target framework block.

[Qamar A. Safadi]

means you need to put your component on the same sturcuture package you put in commonMain

[Jeff Lockhart]

I was able to build the iOS app without any errors on my machine.

[Jeff Lockhart]

Those were the only changes I made, but shouldn't be necessary for successful build.

build.gradle.kts

[Jeff Lockhart]

Try invalidating caches and restarting Android Studio.

[Qamar A. Safadi]

I just run it @Romão its working?

[Qamar A. Safadi]

I faced this issue before and it was because I am not following the same structure for the actual function, so that I mentioned you need to follow the same sturcture.

[Romão]

Thanks Jeff L. Did what you explain. Got the same

[Romão]

IMG_20230722_185612.jpg

[Romão]

IMG_20230722_185647.jpg

[Romão]

Can the cause be the JDK? 17

[Qamar A. Safadi]

nope I am using 17 JDK

[Qamar A. Safadi]

did you invalidate cash?

[Qamar A. Safadi]

cache?

[Romão]

Yes Qamar S. And i checked the structure

[Romão]

Structure is ok

[Qamar A. Safadi]

yeah your project runs on my machine

[Qamar A. Safadi]

I didnt face any error

[Romão]

AS understands the expected, actual implementation

[Romão]

But doesn t recognizes Compose

[Romão]

which Android Studio are you guys using?

[Qamar A. Safadi]

this is mine

[Romão]

Im on flamingo, can it be the cause?

[Qamar A. Safadi]

let me check

[Qamar A. Safadi]

I have flamingo version

[Qamar A. Safadi]

Nope

[Qamar A. Safadi]

Works fine

[Romão]

so frustrating

[Romão]

can it be due to M1 memories constraints 8GB

[Qamar A. Safadi]

Don't think so

[Jeff Lockhart]

I used Android Studio Flamingo, latest 2022.2.1 Patch 2 version. Do you have the KMM plugin installed?

[Qamar A. Safadi]

I believe that AS is just caching, try to close it and restart your machine and reopen it.

[Jeff Lockhart]

Kotlin Multiplatform Mobile plugin 0.6.1(222)-14

[Romão]

checking

[Jeff Lockhart]

Try running kdoctor as well.

[Romão]

you took the dev.icerock.mobile.multiplatform-resourcess off, Jeff L, correct?

[Jeff Lockhart]

No, I just moved export("dev.icerock.moko:mvvm-core:0.16.1") to where the others are defined in the framework block.

[Romão]

ok

[Romão]

run kdoctor all "green"

[Romão]

have the latest AS Flamingo Patch 2

[Romão]

cleaning project files, invalidating cache and reboot

[Romão]

not much to

[Jeff Lockhart]

You might upgrade gradle in gradle-wrapper.properties. The latest version is 8.2.1

[Romão]

IMG_20230722_192245.jpg

[Jeff Lockhart]

There is a newer kdoctor version. Probably won't make a difference, but worth a try.

[Romão]

Got the following jeff

[Jeff Lockhart]

That's the Android gradle plugin version.

[Romão]

IMG_20230722_192639.jpg

[Jeff Lockhart]

In gradle-wrapper.properties change distributionUrl=https\:<//services.gradle.org/distributions/gradle-8.0-bin.zip> to distributionUrl=https\:<//services.gradle.org/distributions/gradle-8.2.1-bin.zip>

[Jeff Lockhart]

The Android gradle plugin you could update from 8.0.1 to 8.0.2, but that's not going to be related.

[Romão]

The strangest is i get build succesful

[Jeff Lockhart]

So it's working for you now?

[Romão]

IMG_20230722_193313.jpg

[Romão]

it builds, but whem i try to run it got the unresolve reference composable

[Romão]

it does work Jeff! So happy, you made my day. Many thanks for your assistance let me buy you a drink 👏

[Romão]

you to @Qamar A. Safadi and @Morgane Soula thanks for your time 🙌

[Romão]

suppose upgrading graddle from 8.0 to 8.2.1 did the job.

[Romão]

and build.gradle is cleaner and understood (i think) many thanks @Jeff Lockhart with moko libs and sqldelight ready

[Jeff Lockhart]

Glad it's working for you now. It almost seems like there might have been a corrupt cache with the Gradle 8.0 version. Each Gradle version caches dependencies separately, so it would have redownloaded them all after upgrading.

[Romão]

yes it seems, i had issues with gradle 8.0 in the past. Didnt reached it can be upgraded in the wrapper file.

[Romão]

tomorrow will carry on with the project implementation, hopefully it will be easier. so glad putting this working with the assistance of you and the community. Developing for android, ios, KMM is hard but having people like you makes it more gratifying

[Jeff Lockhart]

Gradle configuration is one of the more challenging aspects of KMM development, for sure. Despite the occasional rough patch, it's fun to develop in Kotlin for multiple platforms and the community is great. 😊

[Jacob Ras]

Nice to see this resolved. 🎉 I'd like to add that I've seen bugs fix themselves (so to say 😉) by upgrading Gradle. I'd say step one in working with KMP is upgrading the Gradle wrapper 🙂