View System Viewmodel Observer

view_system_viewmodel_observer.kt

@HiltViewModel
class CityViewModel @Inject constructor() : ViewModel(), DefaultLifecycleObserver {

    override fun onStart(owner: LifecycleOwner) {
        // fragment is now started, run tasks
    }

    override fun onStop(owner: LifecycleOwner) {
        // fragment is now stopped, cancel running tasks
    }
}

class CityFragment : Fragment() {

    private val viewModel: CityViewModel by viewModels()

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        lifecycle.addObserver(viewModel)
    }
}