I have a Kotlin Multiplatform Mobile library that I published to Maven Central. I am also trying to use this library in a non-KMM Android app. When I declare the dependency in the android app I get this error
Execution failed for task ':app:checkDebugAarMetadata'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
> Could not resolve io.github.tyczj:tweedle-android:0.3.0.
Required by:
project :app
> No matching variant of io.github.tyczj:tweedle-android:0.3.0 was found. The consumer was configured to find a runtime of a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug', attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm' but:
- Variant 'commonMainMetadataElements-published' capability io.github.tyczj:tweedle-android:0.3.0:
- Incompatible because this component declares a usage of 'kotlin-api' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed a runtime of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
- Other compatible attribute:
- Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
- Variant 'metadataApiElements-published' capability io.github.tyczj:tweedle-android:0.3.0:
- Incompatible because this component declares a usage of 'kotlin-metadata' of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'common' and the consumer needed a runtime of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm'
- Other compatible attribute:
- Doesn't say anything about com.android.build.api.attributes.BuildTypeAttr (required 'debug')
- Variant 'releaseApiElements-published' capability io.github.tyczj:tweedle-android:0.3.0 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm':
- Incompatible because this component declares an API of a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'release' and the consumer needed a runtime of a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug'
- Variant 'releaseRuntimeElements-published' capability io.github.tyczj:tweedle-android:0.3.0 declares a runtime of a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'androidJvm':
- Incompatible because this component declares a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'release' and the consumer needed a component, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug'
I assume something is wrong with my configuration but I dont really know what that error is telling me, this is my first time creating a KMM library.
Here is my build.gradle.kts
import org.gradle.api.tasks.bundling.Jar
plugins {
kotlin("multiplatform")
id("com.android.library")
id("kotlin-android-extensions")
id("kotlinx-serialization")
id("maven-publish")
id("signing")
}
repositories {
gradlePluginPortal()
google()
mavenCentral()
}
val javadocJar by tasks.registering(Jar::class) {
archiveClassifier.set("javadoc")
}
group = "io.github.tyczj"
version = "0.3.0"
kotlin {
android{
publishLibraryVariants("release")
}
ios {
binaries {
framework {
baseName = "tweedle"
}
}
}
sourceSets {
val commonMain by getting {
dependencies {
implementation("io.ktor:ktor-client-core:1.5.1")
implementation("io.ktor:ktor-client-json:1.5.1")
implementation("io.ktor:ktor-client-serialization:1.5.1")
implementation("io.ktor:ktor-client-logging:1.5.1")
implementation("ch.qos.logback:logback-classic:1.2.3")
// implementation("com.squareup.okio:okio:2.10.0")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.2-native-mt"){
version {
strictly("1.4.2-native-mt")
}
}
}
}
val commonTest by getting {
dependencies {
implementation(kotlin("test-common"))
implementation(kotlin("test-annotations-common"))
}
}
val androidMain by getting {
dependencies {
implementation("androidx.core:core-ktx:1.3.2")
implementation("io.ktor:ktor-client-android:1.5.1")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.2-native-mt")
implementation("com.github.scribejava:scribejava-apis:8.3.0")
}
}
val androidTest by getting {
dependencies {
implementation(kotlin("test-junit"))
implementation("junit:junit:4.12")
}
}
val iosMain by getting {
dependencies {
implementation("io.ktor:ktor-client-ios:1.5.1")
}
}
// val iosTest by getting
}
}
android {
compileSdkVersion(30)
sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
defaultConfig {
minSdkVersion(26)
targetSdkVersion(30)
versionCode = 1
versionName = "1.0"
}
buildTypes {
getByName("release") {
isMinifyEnabled = false
}
}
packagingOptions {
excludes.add("META-INF/*.kotlin_module")
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().all {
kotlinOptions {
jvmTarget = "1.8"
}
}
}
afterEvaluate {
publishing {
repositories {
maven {
name = "sonatype"
url = uri("https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/")
credentials {
username = rootProject.ext["ossrhUsername"]?.toString()
password = rootProject.ext["ossrhPassword"]?.toString()
}
}
}
publications.withType<MavenPublication> {
artifact(javadocJar.get())
pom{
name.set("Tweedle")
description.set("Tweedle is an Android library built around the Twitter v2 API built fully in Kotlin using Kotlin Coroutines")
url.set("https://github.com/tyczj/Tweedle")
licenses {
license {
name.set("MIT")
url.set("https://opensource.org/licenses/MIT")
}
}
developers {
developer {
id.set("tyczj")
name.set("Jeff Tycz")
email.set("[email protected]")
}
}
scm {
url.set("https://github.com/tyczj/Tweedle")
}
}
}
}
}
val packForXcode by tasks.creating(Sync::class) {
group = "build"
val mode = System.getenv("CONFIGURATION") ?: "DEBUG"
val sdkName = System.getenv("SDK_NAME") ?: "iphonesimulator"
val targetName = "ios" + if (sdkName.startsWith("iphoneos")) "Arm64" else "X64"
val framework =
kotlin.targets.getByName<org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget>(
targetName
).binaries.getFramework(mode)
inputs.property("mode", mode)
dependsOn(framework.linkTask)
val targetDir = File(buildDir, "xcode-frameworks")
from({ framework.outputDirectory })
into(targetDir)
}
tasks.getByName("build").dependsOn(packForXcode)
ext["signing.keyId"] = rootProject.ext["signing.keyId"]?.toString()
ext["signing.password"] = rootProject.ext["signing.password"]?.toString()
ext["signing.secretKeyRingFile"] = rootProject.ext["signing.secretKeyRingFile"]?.toString()
signing {
sign(publishing.publications)
}
What do I need to do to be able to use the android dependency (io.github.tyczj:tweedle-android) in a non-KMM android app?
Update
I tried adding "debug" to android library variants
android{
publishLibraryVariants("release", "debug")
}
as well as adding fallbacks
buildTypes {
getByName("release") {
isMinifyEnabled = false
}
val staging by creating{
setMatchingFallbacks(listOf("release", "debug"))
}
}
and that didnt do anything
If I create a new KMM project and just try to add the dependency I get somewhat of a different error saying
Failed building KotlinMPPGradleModel
org.gradle.internal.resolve.ArtifactNotFoundException: Could not find tweedle-android-0.3.1-samplessources.jar (io.github.tyczj:tweedle-android:0.3.1).
I guess you publish library as aar. In this case you should explicitly add @aar to gradle dependency
implementation 'io.github.tyczj:tweedle-android:0.3.0@aar'