i keep getting "The 'java' plugin has been applied, but it is not compatible with the Android plugin...

# multiplatform

[Yousef]

i keep getting "The 'java' plugin has been applied, but it is not compatible with the Android plugins."

[Yousef]

build.gradle.kts

plugins {
    kotlin("multiplatform") version "1.7.0"
    application
    id("com.android.application")
    id("kotlin-android-extensions")
}

group = "net.virtualcoder"
version = "1.0-SNAPSHOT"

repositories {
    google()
    jcenter()
    mavenCentral()
    maven("<https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven>")
}

kotlin {
    jvm {
        compilations.all {
            kotlinOptions.jvmTarget = "1.8"
        }
        testRuns["test"].executionTask.configure {
            useJUnitPlatform()
        }
    }
    js(LEGACY) {
        binaries.executable()
        browser {
            commonWebpackConfig {
                cssSupport.enabled = true
            }
        }
    }
    android()
    sourceSets {
        val commonMain by getting
        val commonTest by getting {
            dependencies {
                implementation(kotlin("test"))
            }
        }
        val jvmMain by getting {
            dependencies {
                implementation("io.ktor:ktor-server-netty:2.0.1")
                implementation("io.ktor:ktor-server-html-builder-jvm:2.0.1")
                implementation("org.jetbrains.kotlinx:kotlinx-html-jvm:0.7.2")
            }
        }
        val jvmTest by getting
        val jsMain by getting {
            dependencies {
                implementation("org.jetbrains.kotlin-wrappers:kotlin-react:18.0.0-pre.332-kotlin-1.6.21")
                implementation("org.jetbrains.kotlin-wrappers:kotlin-react-dom:18.0.0-pre.332-kotlin-1.6.21")
                implementation("org.jetbrains.kotlin-wrappers:kotlin-emotion:11.9.0-pre.332-kotlin-1.6.21")
            }
        }
        val jsTest by getting
        val androidMain by getting {
            dependencies {
                implementation("com.google.android.material:material:1.5.0")
            }
        }
        val androidTest by getting {
            dependencies {
                implementation("junit:junit:4.13.2")
            }
        }
    }
}

android {
    compileSdkVersion(31)
    sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
    defaultConfig {
        applicationId = "net.virtualcoder.application"
        minSdkVersion(24)
        targetSdkVersion(31)
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
}

application {
    mainClass.set("net.virtualcoder.application.ServerKt")
}

tasks.named<Copy>("jvmProcessResources") {
    val jsBrowserDistribution = tasks.named("jsBrowserDistribution")
    from(jsBrowserDistribution)
}

tasks.named<JavaExec>("run") {
    dependsOn(tasks.named<Jar>("jvmJar"))
    classpath(tasks.named<Jar>("jvmJar"))
}

[ephemient]

can't use application plugin

[Landry Norris]

More specifically, you can’t application and android plugins in the same module.

[ephemient]

even without the Android plugin, it won't work with the KMP JVM target unless you explicitly add withJava

[Yousef]

oh i just used the idea ultimate wizard to create the fullstack project and added an android target

[Landry Norris]

It would be better to have a module for shared code, then a module for android that has just an entry point into your shared module and a jvm module with application that just has an entrypoint.

[ephemient]

you can't use withJava and Android

[ephemient]

yes, I agree. use KMP for a shared library. if you want to have an Android application and a JVM application, create separate single-platform modules for them

[Yousef]

sounds good thanks a lot

[Landry Norris]

I personally always keep the full android app in the shared module and have entry points for other platforms, but that may just be because I’m lazy.

[Landry Norris]

That said, it would be nice if we could have android and jvm applications in one module, but I get why Google set the android plugin to fail if it sees the java plugin.

[ephemient]

even if it didn't explicitly fail, it would be broken in other ways, so it's just as well that it errors out early

[Landry Norris]

It would be nice if it were programmed to be compatible. I’m sure it’s possible to do, but would require a fair bit of work.

[Yousef]

well right now im trying everything since i can't find an official "fullstack/android" kmp hello world. Found some finished projects on github though so ill just use those as an example for structure

[Stylianos Gakis]

Do any of these fit your needs? More specifically peopleInSpace maybe if you don’t want to filter through a lot of them.