How can I initialise a dynamic nested object in kotlin?

Question

I'm looking to create an object structure that has a dynamic class that I would want to change:

Top level:

data class TopLevel(
  var myCustomClass1: MyCustomClass1,
  var myCustomClass2: MyCustomClass2)

Second level:

data class MyCustomClass2(var dynamicClass: DynamicClass)

The DynamicClass is the the one I want to change.e.g I may want to use DynamicClass or DynamicClass2 within MyCustomClass2.

What is the best way to do this using kotlin?

Within MyCustomClass2 I want to be able to change which object is passed into it. — eVolve
– eVolve, Commented Jul 5, 2018 at 20:51

s1m0nw1 · Accepted Answer · 2018-07-05 21:01:49Z

2

Since Kotlin is a statically typed language, you'll need to find some way to describe your abstract class, e.g. by using an interface:

interface IDynamicClass

class DynamicClass : IDynamicClass
class DynamicClass2 : IDynamicClass

data class MyCustomClass2(var dynamicClass: IDynamicClass)

This allows you to instantiate the MyCustomClass2 with any instance implementing the IDynamicClass interface:

MyCustomClass2(DynamicClass())
MyCustomClass2(DynamicClass2())

answered Jul 5, 2018 at 21:01

s1m0nw1

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