Pfthb

I have an Activity which is called Homeactivity and I have a fragment Notification and their ViewModel class, I want to update notification count from fragment's ViewModel and I declared that interface outside the notification ViewModel and I'm unable to call the method of that interface in Kotlin

class NotificationsViewModel(val notificationsActivity: HomeActivity) : 
 BaseObservable() 


 //somewhere i want to update count which is in homeactivity

 
 interface NotifyCount 
 fun notifyNotificationCount(count: String)

My fragment class is given below

class NotificationsFragment : Fragment() 
private var notificationsBinding: NotificationsActivityBinding? = null

override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? 
 notificationsBinding= DataBindingUtil.inflate(inflater, R.layout.notifications_activity,container,false)
 notificationsBinding!!.viewModel= NotificationsViewModel(activity!! as HomeActivity)
 return notificationsBinding!!.root

I just want to call method notifyNotificationCount in ViewModel so that I will update my count from HomeActivity by overriding the NotifyCount

how can I call the method notifyNotificationCount in
viewModel` class?

You can use MutableLiveData in your ViewModel class and observe the value of notification count, whenever the value of notification count changed it will inform to observing the class.