How do I run desktop configuration from Android St...

# compose-desktop

[Samuel]

How do I run desktop configuration from Android Studio?

https://www.jetbrains.com/help/kotlin-multiplatform-dev/quickstart.html#run-the-sample-apps

I've tried these 7 different approaches (all of which are valid destinations on my filesystem with the .kt extension removed):
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.MainActivity --quiet
• desktopRun -DmainClass=<http://io.github.samuelmarks.off_on_ml.App|io.github.samuelmarks.off_on_ml.App> --quiet
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.Greeting --quiet
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.Platform --quiet
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.Platform.jvm --quiet
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.main --quiet
• desktopRun -DmainClass=io.github.samuelmarks.off_on_ml --quiet

[SaurabhS]

Depends on where your main function resides. If it's at top level, in a file named App , you need to use AppKt as class name.

[Samuel]

Main method not found in class io.github.samuelmarks.off_on_ml.AppKt, please define the main method as:

From repo root, all .kt files:

composeApp/src/androidMain/kotlin/io/github/samuelmarks/off_on_ml/MainActivity.kt
composeApp/src/androidMain/kotlin/io/github/samuelmarks/off_on_ml/Platform.android.kt
composeApp/src/commonMain/kotlin/io/github/samuelmarks/off_on_ml/App.kt
composeApp/src/commonMain/kotlin/io/github/samuelmarks/off_on_ml/Greeting.kt
composeApp/src/commonMain/kotlin/io/github/samuelmarks/off_on_ml/Platform.kt
composeApp/src/commonTest/kotlin/io/github/samuelmarks/off_on_ml/ComposeAppCommonTest.kt
composeApp/src/desktopMain/kotlin/io/github/samuelmarks/off_on_ml/Platform.jvm.kt
composeApp/src/desktopMain/kotlin/io/github/samuelmarks/off_on_ml/main.kt
composeApp/src/iosMain/kotlin/io/github/samuelmarks/off_on_ml/MainViewController.kt
composeApp/src/iosMain/kotlin/io/github/samuelmarks/off_on_ml/Platform.ios.kt
composeApp/src/wasmJsMain/kotlin/io/github/samuelmarks/off_on_ml/Platform.wasmJs.kt
composeApp/src/wasmJsMain/kotlin/io/github/samuelmarks/off_on_ml/main.kt

[Samuel]

FWIW: This is an unaltered repo generated from https://kmp.jetbrains.com/?android=true&ios=true&iosui=compose&desktop=true&web=true&includeTests=true

[jw]

Probably should be MainKt then

[jw]

Assuming the main method lives in that file as a top level function and it has no @file:JvmName

[Samuel]

Nope that also didn't work. Here let me give you the repo: https://github.com/SamuelMarks/off_on_ml

PS: I have also tried desktopRun -DmainClass=io.github.samuelmarks.off_on_ml.OffOnMl.MainKt --quiet

[Olivier Patry]

I think I had to create a object Main where the main function resides.

mainApp.kt (at root of source folder)

object MainApp

fun main() {
  ...
}

In mymodule/build.gradle.kts

plugins {
    alias(libs.plugins.jetbrains.kotlin.jvm)
    ...
}

compose.desktop {
    application {
        mainClass = "MainAppKt"
        ...
    }
}

To launch it

./gradlew :mymodule:run --quiet

[Olivier Patry]

I guess it should work with package as well

[hfhbd]

You don’t need the object

[hfhbd]

But how does your commonMain app.kt and your desktopMain app.kt look like? I assume, the fun main entrypoint is only defined in the desktopMain app.kt file? Because both common and the actual desktopMain file are named the same (AppKt.class), at runtime the wrong common class file is loaded first without the main function.
=> Rename desktopMain app.kt to app.desktop.kt (or use @JvmName with an unique name)

[zsmb]

Is this a question because the run config that was automatically created by the KMP plugin didn't work, or it didn't generate one for you? Normally you should see a moduleName [desktop] run config which is set up correctly already.

If that's not the case, and you could share the project in a YouTrack issue, that'd be really helpful: https://youtrack.jetbrains.com/newIssue?project=KMT

[Samuel]

Ok happy to create an issue. Yeah I have literally modified 0 files [except README.md, and adding licenses].

I also tried all the default gradle tasks (clicking the 🐘 [gradle])

[Samuel]

@zsmb https://youtrack.jetbrains.com/issue/KMT-1275/Desktop-configuration-gradle-doesnt-work