Kodein and activity context discuss

Question

I have researched this example repo to understand how to implement Kodein in the Android app. But I was confused about the context questions in the activity case in the example.

Here the code:

  abstract class BaseActivity<B : ViewDataBinding, VM : ViewModel>: AppCompatActivity(), KodeinAware {

  protected lateinit var binding: B
  lateinit var viewModel: VM
  private val _parentKodein by closestKodein()

  override val kodein: Kodein by retainedKodein {
    extend(_parentKodein, copy = Copy.All)
    bind<Activity>() with singleton { this@BaseActivity }
    bind<Context>("ActivityContext") with singleton { this@BaseActivity }
    import(activityModule)
  }
}

Here we see that we add the context of activity to the singleton.

But also I see that we get Kodein by retainedKodein function. So this Kodein module has immune to activity destroying on rotation. But I do not understand about activity's context, because singleton holds the context.

So I ask. Does Kodein reattach the context of activity? Could you describe to me the reattach mechanism? Because this is not clear for me now. Thank you guys!:))

Answer 1

The answer is no way! Kodein can not reatach activity context to his instance. I have used leackcanary util and found activity leacks in sample repo, also created isuue

There is leackcanary result: