When I try to use a specific Kotlin version for cordova-android 9.1.0, I get error messages like:

Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.6.0, expected version is 1.1.15.

That results from using:

<preference name="GradlePluginKotlinVersion" value="1.6.0" />

If I manually replace the 1.3.50 ext.kotlin_version values with 1.6.0 in the build.gradle files, then my project starts building successfully.

How can I make the build work, with my desired Kotlin version, without having to make this edit?

CodePudding user response：

I had the same problem on Cordova 9 and wasn't able to resolve it since Cordova 9 has kotlin v 1.3.50 hardcoded in the build.gradle file.

So I upgraded to Cordova 10.1.0 and the issue was solved.

cordova platform remove android
cordova platform add android@10.1.0