This is an improved version of https://gist.github.com/5AbhishekSaxena/0a1e18dfa61af3bdded939187f27a43e

UiImage.kt

sealed class UiImage<out T>(val resource: T) {
    data class LocalImage(private val imageRes: Int) : UiImage<Int>(resource = imageRes)
    data class RemoteImage(private val imageUrl: String) : UiImage<String>(resource = imageUrl)
}

Implementation example

data class Person(
    var profileImage: UiImage<*>
)

fun sample() {
    val person =
        Person(
            profileImage = UiImage.RemoteImage(
                imageUrl = "https://google.ccom/images/sample_image.png"
            )
        )

    person.profileImage = UiImage.LocalImage(R.drawable.placeholder)

}

// How to use it with Glide
fun ImageView.loadImage(
    image: UiImage<*>
) {
    Glide.with(this.context)
        .load(image.resource)
        .into(this)
}