ViewNotifyingPresenter.kt

class MainView(activity: MainActivity, private val bus: EventBus) {
    private val activityRef = WeakReference(activity)
    
    init {
        activity.findViewById<View>(R.id.someButton_id).setOnClickListener {
            bus.post(SomeKindOfEvent())
        }
    }
  
    class SomeKindOfEvent
}