How to overcome “same JVM signature” error when implementing a Java interface?

Question

With the code below, I am getting the following error in IntelliJ IDEA 13.1.6 and Kotlin plugin 0.11.91.AndroidStudio.3:

Platform declaration clash: The foll         


        

Answer 1

Another work-around is to declare the properties in an abstract Kotlin class, then write a small java class that extends KotlinClass and implements JavaInterface.

// JavaInterface.java
public interface JavaInterface {
    int getFoo();
    void setFoo(int value);
}

// KotlinClass.kt
abstract class KotlinClass(open var foo : Int = 0) {
}

// JavaAdapter.java
class JavaAdapter extends KotlinClass implements JavaInterface {
    // all code in KotlinClass, but can't implement JavaInterface there
    // because kotlin properties cannot override java methods.
}