Kotlin and Dagger: Can I use @Inject to an object still make it nullable/optional?

I had the same problem and solved like this:

@Inject
@JvmField
var presenter: Presenter? = null

Hope it helps.

If you don't have Java code that needs to access the presenter field you don't need to annotate it with @JvmField. Instead, you can declare your field like so:

@set:Inject
var presenter: Presenter? = null