I have a KMP multi-platform library for Java-Swing, Android, iOS. There is no problem on Java-Swing,...

# multiplatform

[Hailong]

I have a KMP multi-platform library for Java-Swing, Android, iOS. There is no problem on Java-Swing, iOS, but an error is reported when used on Android.
Has anyone encountered this kind of error? How to solve it, I have been doing it for a day...

1、KMP-common
gradle/wrapper/gradle-wrapper.properties
distributionUrl= xxx/gradle-6.5-all.zip
build.gradle.kts
kotlin {
jvm{
compilations.all {
kotlinOptions.jvmTarget = "1.8" // Default value: "1.6"
}
}
sourceSets{
val jvmMain by getting {
dependencies {
implementation(Deps.NGJvm.log_jvm_common)
implementation (Deps.NGJvm.common_net)
implementation(Deps.NGJvm.order_calculator)
implementation(Deps.NGJvm.common_utils)

}
}
}
}

2、Java Swing --> It work well
gradle/wrapper/gradle-wrapper.properties
distributionUrl= xxx/gradle-4.10-all.zip


3、Android --> build error
build.gradle
classpath 'com.android.tools.buildG3.1.4'

implementation ('com.xx.xx.kmp.common.net:NGNet-jvm:1.0.1-SNAPSHOT'){
exclude group: 'com.xx.xx.common'
exclude group: 'com.xx.xx.business.common'
exclude group: 'com.xx.xx.sjst'
}

gradle/wrapper/gradle-wrapper.properties
distributionUrl= xxx/gradle-4.10-all.zip

--------- Error messag ------------

Task apptransformClassesWithStackFramesFixerForDebug

Exception in thread "main" java.lang.IllegalArgumentException: Type without superclass: module-info
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:191)
at com.google.devtools.build.android.desugar.DefaultMethodClassFixer.visit(DefaultMethodClassFixer.java:80)
at org.objectweb.asm.ClassVisitor.visit(ClassVisitor.java:113)
at com.google.devtools.build.android.desugar.InterfaceDesugaring.visit(InterfaceDesugaring.java:97)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:621)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:500)
at com.google.devtools.build.android.desugar.Desugar.desugarClassesInInput(Desugar.java:477)
at com.google.devtools.build.android.desugar.Desugar.desugarOneInput(Desugar.java:361)
at com.google.devtools.build.android.desugar.Desugar.desugar(Desugar.java:314)
at com.google.devtools.build.android.desugar.Desugar.main(Desugar.java:711)

Task apptransformClassesWithDesugarForDebug FAILED

FAILURE: Build failed with an exception.

[Hailong]

I have found the root cause, AGP 3.x is not compatible with Kotlin 1.4.x in the Android project, otherwise there will be many compatibility issues
Temporary solution version: reduce the Kotlin version to 1.3.x, the corresponding AGP is 3.1.2
Remaining question: If the AGP of the project is 3.1.x and I want to use Kotlin 1.4.x, what should I do?