Can I use enum from code in android custom enum attribute?

Question

I have an enum in my Kotlin app:

enum class MeasurementUnits(val displayString: String) {
    KILOGRAM("kg"),
    POUND("lbs"),
    KILOMETER("km"),
    MILE("mi"),
}

I'd like to use this enum in a custom attribute in a compound View I'm writing, like so:

<com.myapp.MyCustomView
    android:id="@+id/distance"
    custom:display_units="KILOMETER" />

But the only way I see of defining this attribute as an enum is separate and unrelated to the enum, in attrs.xml:

<attr name="input_units" format="enum">
   <enum name="KILOGRAM" value="0"/>
   <enum name="POUND" value="1"/>
   <enum name="KILOMETER" value="2"/>
   <enum name="MILE" value="3"/>
</attr>

This is weird, since I'm re-defining the enum again, and it's super fragile - they must be completely in sync, any changes must be done in the same place. I don't want to just write it as string since this is super fragile too, but it's slightly better - at least I don't force the order to be the same.

Is there a way to define a custom enum attribute, and point to the enum class in my code? Or at least make sure the lists are in sync?

What's the best practice here?