Hi! I'm starting out with multiplatform, but IDEA is pointing out usages of java packages in my code...

# multiplatform

[Gabriel Feo]

Hi! I'm starting out with multiplatform, but IDEA is pointing out usages of java packages in my code as unresolved references, even though the project compiles (any java.* reference). Has anyone run into this?

[Gabriel Feo]

[Gabriel Feo]

This is my module’s build script:

plugins {
    id("org.jetbrains.kotlin.multiplatform")
}
repositories {
    mavenCentral()
}

kotlin {
    jvm()
    sourceSets {
        val commonMain by getting {
            dependencies {
                implementation(kotlin("stdlib-common"))
            }
        }
        val commonTest by getting {
            dependencies {
                implementation(kotlin("test-common"))
                implementation(kotlin("test-annotations-common"))
            }
        }
        val jvmMain by getting {
            dependsOn(commonMain)
            dependencies {
                implementation(kotlin("stdlib-jdk8"))
            }
        }
        val jvmTest by getting {
            dependencies {
                implementation(kotlin("test"))
                implementation(kotlin("test-junit"))
            }
        }
    }
}

[russhwolf]

You don't need dependsOn(commonMain) in jvmMain. That might be confusing the IDE.

[Gabriel Feo]

@russhwolf, thanks, that was added by the IDE template. I removed it, but still no luck

[Sebastian Sellmair [JB]]

What versions Kotlin (Gradle Plugin, IDE Plugin) are you currently using?

[Gabriel Feo]

Kotlin plugin for Gradle: 1.3.50
Kotlin plugin for IDEA: 1.3.60-release-IJ2019.2-1
IDEA Ultimate 2019.2.4

[russhwolf]

Oh interesting if it's in the template then that's new.

[Sebastian Sellmair [JB]]

Try upgrading to gradle 1.3.60. We have seen so many MPP issues being resolved with 1.3.60

[Sebastian Sellmair [JB]]

(We are using it since the first eap. Works really well ☺️ )

[Erik Christensen]

I've seen some weirdness where Java classes can't be found in the IDE. Haven't digged into too much, but I've found that changing the Java version in Project Settings usually does the trick.

[Erik Christensen]

It seems to keep changing my target Java version to 11, which is at odds with the Gradle configuration, which is set to 8. When I set it back to 8, it magically starts working again.

[Gabriel Feo]

@russhwolf @Sebastian Sellmair [JB] @Erik Christensen
Thank you all! I think changing my target Java version is what did it, which is weird because I didn’t have this set in Gradle at all, so IDEA should be working with version 11, but it started working once I changed it to version 8