Dagger Lazy during constructor injection

Question

I realize that the recommended way of accomplishing Lazy injection with Dagger is to add Lazy to a field injection point. For instance,

class Foo {
    @Inject lateinit var bar: Lazy<Bar>

    fun useBar() = bar.get().doSomething()
}

What about using constructor injection? I have not seen anyone doing it.

class Foo @Inject constructor(private val fizz: Fizz,
                              private val bar: Lazy<Bar>) {    
    fun useBar() = bar.get().doSomething()
}

To summarize when doing Dagger lazy injection, can I use Lazy<Bar> in a constructor? Or is my only option to move Lazy<Bar> to a field injection while keeping other non-Lazy dependencies in the same class injected via the constructor?

Thanks for any pointers!

Answer 1

Constructor injection is no different from regular field injection, Lazy-wrapped constructor arguments are acceptable.

The only thing you need to make sure is to expose the dependency via module somewhere in the dependency graph.