AppDatabase::class.instantiateImpl() not found - unresolved reference

[Maugir]

Compiling with Android Studio Koala 2024.1.1 give this error

file:///Users/admin/Sviluppo/AppNativa/kotlin-multiplatform-samples/Fruitties/shared/src/nativeMain/kotlin/com/example/fruitties/di/Factory.native.kt:38:24 Type mismatch: inferred type is Unit but AppDatabase was expected

This issue is similar to this question on stack overflow https://stackoverflow.com/questions/78627516/room-with-kmm-unresolved-reference-instantiateimpl

[ThomasBernard03]

In your gradle.properties, add theses lines :

kotlin.apple.deprecated.allowUsingEmbedAndSignWithCocoaPodsDependencies=true

kotlin.mpp.androidGradlePluginCompatibility.nowarn=true
kotlin.native.disableCompilerDaemon = true

In shared/build.gradle.kts :

iosMain {
    // Fixes RoomDB Unresolved reference 'instantiateImpl' in iosMain
    kotlin.srcDir("build/generated/ksp/metadata")
}

//And :
dependencies {
    add("kspCommonMainMetadata", libs.androidx.room.compiler)
}

tasks.withType<org.jetbrains.kotlin.gradle.dsl.KotlinCompile<*>>().configureEach {
    if (name != "kspCommonMainKotlinMetadata" ) {
        dependsOn("kspCommonMainKotlinMetadata")
    }
}

It fix the problem for me :

I fix the problem in this commit : https://github.com/ThomasBernard03/Tarot/commit/9e125e538c148c2055587ebeee6bd2d4916a1b19

[cartland]

This should be fixed in https://github.com/android/kotlin-multiplatform-samples/pull/28.

• Updated to Kotlin 2.0.10
• Room 2.7.0-alpha06
  • https://developer.android.com/jetpack/androidx/releases/room#2.7.0-alpha06
  • https://developer.android.com/kotlin/multiplatform/room#defining-database

"Due to Kotlin 2.0 compilation model, the strategy of referencing a to-be-generated function, named instantiateImpl() is longer viable. Two new APIs, @ConstructedBy and RoomDatabaseConstructor are introduced that replace the instantiateImpl() strategy."