Publish Android-specific artifact

build.gradle.kts

@@ -1,5 +1,6 @@
 plugins {
   alias(libs.plugins.android.application) apply false
+  alias(libs.plugins.android.library) apply false
   alias(libs.plugins.buildlogic.kotlin.multiplatform.library) apply false
   alias(libs.plugins.compose) apply false
   alias(libs.plugins.kotlin.atomicfu) apply false

buildlogic/build.gradle.kts

@@ -4,6 +4,7 @@ plugins {
 
 dependencies {
   compileOnly(gradleApi())
+  implementation(libs.plugin.android.build)
   implementation(libs.plugin.kotlin)
   implementation(libs.plugin.vanniktech.publish)
 }

buildlogic/settings.gradle.kts

@@ -1,5 +1,6 @@
 dependencyResolutionManagement {
   repositories {
+    google()
     gradlePluginPortal()
     mavenCentral()
   }

buildlogic/src/main/kotlin/buildlogic/KotlinMultiplatformLibraryPlugin.kt

@@ -1,5 +1,6 @@
 package buildlogic
 
+import com.android.build.api.dsl.LibraryExtension
 import com.vanniktech.maven.publish.JavadocJar
 import com.vanniktech.maven.publish.KotlinMultiplatform
 import com.vanniktech.maven.publish.MavenPublishBaseExtension
@@ -8,6 +9,7 @@ import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.artifacts.VersionCatalogsExtension
 import org.gradle.kotlin.dsl.configure
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
 import org.jetbrains.kotlin.gradle.dsl.KotlinProjectExtension
 
@@ -18,6 +20,12 @@ internal class KotlinMultiplatformLibraryPlugin : Plugin<Project> {
       KotlinMultiplatformLibraryPluginExtension::class.java,
     )
     val libs = extensions.getByType(VersionCatalogsExtension::class.java).named("libs")
+    pluginManager.apply(
+      libs.findPlugin("android-library")
+        .get()
+        .get()
+        .pluginId,
+    )
     pluginManager.apply(
       libs.findPlugin("kotlin-multiplatform")
         .get()
@@ -31,6 +39,27 @@ internal class KotlinMultiplatformLibraryPlugin : Plugin<Project> {
         .pluginId,
     )
     group = "com.tidal.networktime"
+    configure<KotlinMultiplatformExtension> {
+      applyDefaultHierarchyTemplate()
+      androidTarget {
+        compilerOptions {
+          jvmTarget.set(JvmTarget.JVM_1_8)
+        }
+        publishLibraryVariants("release")
+      }
+      jvm()
+      sourceSets.androidMain.get().dependsOn(sourceSets.jvmMain.get())
+    }
+    configure<KotlinProjectExtension> {
+      sourceSets.all {
+        languageSettings.optIn("kotlin.experimental.ExperimentalObjCName")
+      }
+    }
+    configure<LibraryExtension> {
+      compileSdk = 34
+      defaultConfig.minSdk = 26
+      namespace = "com.tidal.networktime${customExtension.androidNamespaceSuffix.getOrElse("")}"
+    }
     configure<MavenPublishBaseExtension> {
       pom {
         name.set(project.name)
@@ -62,14 +91,5 @@ internal class KotlinMultiplatformLibraryPlugin : Plugin<Project> {
       signAllPublications()
       publishToMavenCentral(SonatypeHost.CENTRAL_PORTAL, true)
     }
-    configure<KotlinMultiplatformExtension> {
-      applyDefaultHierarchyTemplate()
-      jvm()
-    }
-    configure<KotlinProjectExtension> {
-      sourceSets.all {
-        languageSettings.optIn("kotlin.experimental.ExperimentalObjCName")
-      }
-    }
   }
 }

buildlogic/src/main/kotlin/buildlogic/KotlinMultiplatformLibraryPluginExtension.kt

@@ -12,6 +12,7 @@ open class KotlinMultiplatformLibraryPluginExtension @Inject constructor(
   private val project: Project,
   objectFactory: ObjectFactory,
 ) {
+  val androidNamespaceSuffix: Property<String> = objectFactory.property(String::class.java)
   val pomDescription: Property<String> = objectFactory.property(String::class.java)
 
   fun xCFramework(xCFrameworkName: String) = with(project) {

changelog/1.1.2

@@ -0,0 +1 @@
+Add Android-specific artifact.

gradle/libs.versions.toml

@@ -20,16 +20,17 @@ kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-c
 kotlinx-datetime = { module = "org.jetbrains.kotlinx:kotlinx-datetime", version.ref = "kotlinx-datetime" }
 kotlinx-serialization-json-okio = { module = "com.squareup.okio:okio", version.ref = "okio" }
 okio = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json-okio", version.ref = "kotlinx-serialization-json-okio" }
+plugin-android-build = { module = "com.android.tools.build:gradle", version.ref = "android-build" }
 plugin-kotlin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
 plugin-vanniktech-publish = { module = "com.vanniktech:gradle-maven-publish-plugin", version.ref = "vanniktech-publish" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "android-build" }
+android-library = { id = "com.android.library", version.ref = "android-build" }
 buildlogic-kotlin-multiplatform-library = { id = "buildlogic.kotlin.multiplatform.library", version = "unspecified" }
 compose = { id = "org.jetbrains.compose", version.ref = "compose" }
 kotlin-atomicfu = { id = "org.jetbrains.kotlin.plugin.atomicfu", version.ref = "kotlin" }
 kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
-kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
 kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 vanniktech-publish = { id = "com.vanniktech.maven.publish", version.ref = "vanniktech-publish" }

networktime-singletons/build.gradle.kts

@@ -4,6 +4,7 @@ plugins {
 }
 
 buildlogicKotlinMultiplatformLibrary {
+  androidNamespaceSuffix = ".singletons"
   pomDescription = "Singleton API extension."
   xCFramework("TidalNetworkTimeSingletons")
 }

networktime/build.gradle.kts

@@ -1,3 +1,4 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 
 plugins {
@@ -11,6 +12,12 @@ buildlogicKotlinMultiplatformLibrary {
 }
 
 kotlin {
+  androidTarget {
+    compilerOptions {
+      jvmTarget.set(JvmTarget.JVM_1_8)
+    }
+    publishLibraryVariants("release")
+  }
   targets.filterIsInstance<KotlinNativeTarget>()
     .forEach {
       it.compilations.configureEach { cinterops.create("NetworkFrameworkWorkaround") }

networktime/src/androidMain/AndroidManifest.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+  <uses-permission android:name="android.permission.INTERNET" />
+</manifest>

samples/multiplatform-kotlin/android/build.gradle.kts

@@ -26,9 +26,6 @@ kotlin {
 
 android {
   compileSdk = 34
-  defaultConfig {
-    minSdk = 21
-    targetSdk = 34
-  }
+  defaultConfig.minSdk = 26
   namespace = "com.tidal.networktime.sample.android"
 }