I have a KMP multi platform library for Java Swing Android i

Question

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 gt It work well gradle wrapper gradle wrapper properties distributionUrl= xxx gradle 4 10 all zip 3 Android gt build error build gradle classpath com android tools build gradle 3 1 4 implementation <http com xx xx kmp common net NGNet jvm 1 0 1 SNAPSHOT|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 gt Task app transformClassesWithStackFramesFixerForDebug 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 gt Task app transformClassesWithDesugarForDebug FAILED FAILURE Build failed with an exception

Hailong · Answer

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