Kotlin伴侣对象和反射

Question

Ran into something interesting when using companion objects and Java reflection. I'm not sure if its intended or not, or if I'm just not understanding things fully.

I have this code

public class TestClass {
  companion object {
        public platformStatic var data: String? = null
  }
}

The data field eventually gets filled via reflection from another class.

What I've found is that if I access the class with TestClass.javaClass , I get the internal companion class which only has methods for accessing that field. Accessing it via javaClass<TestClass>() gets me the expected Java class with full access to the fields.

Am I just missing something obvious? Is there a reason for this behavior?

Answer 1

静态字段存储在外部类中以方便Java互操作：您可以说Java中的TestClass.data引用该字段（这应该是为什么您首先将其标记为platformStatic原因）。