Retrofit2 + SimpleXML in Kotlin: MethodException: Annotation must mark a set or get method

Question

I want to fetch XML data from API and map it to Kotlin model object by using Retrofit2 + SimpleXML in Kotlin.

However, I got such as the following error message from

Answer 1

This is the same problem as: kotlin data class + bean validation jsr 303

You need to use Annotation use-site targets since the default for an annotation on a property is prioritized as:

• parameter (if declared in constructor)
• property (if the target site allows, but only Kotlin created annotations can do this)
• field (likely what happened here, which isn't what you wanted).

Use get or set target to place the annotation on the getter or setter. Here it is for the getter:

@Root(name = "response")
public class User() {
    @get:Element public var result: String? = null
    @get:Element public var token: String? = null
    @get:Element public var uid: String? = null
}

See the linked answer for the details.