I know why it fails with a type mismatch, but I would hoping that the rialization plugin would magically add the interface java.io.Serializable to the Person data class. intent.putExtra('object', (Serializable) passingObject) startActivity(intent) Step 5: Create a new activity SecondActivity.kt to catch the passed object and add a TextView in the layout of the second activity activitysecond. Fails with: 'Type mismatch: inferred type is Person but Serializable was expected' Implementation(':kotlinx-serialization-json:1.1.0') Tried and failed code with rialization //

Val p1: java.io.Serializable = Person('abc') CommonMainĭata class Person(val name: String) : SerializableĪctual typealias Serializable = DummyInterfaceĪctual typealias Serializable = java.io.Serializable This code works fine, although the required DummyInterface may be a bit useless. Current code and solution: expected and actual types I also found that the library rialization exists, but I'm not sure if it can be a solution.

I have a solution, which is shown below, but I was wondering if this is the best approach. I have a data class in commonMain (called Person) that I would like to access from jvmMain as type java.io.Serializable.

Kotlin implement serializable