Milline funktsioon ViewModelis algatab kasutajaliidese kuvamise uuendamise?

In the ViewModel, a LiveData or StateFlow object is usually used to update the user interface. To initiate the display update, the ViewModel changes the value in LiveData using setValue() (if on the main thread) or postValue() (if from a background thread).

Example with LiveData:

private val _data = MutableLiveData<String>()
val data: LiveData<String> = _data

fun updateData(newValue: String) {
    _data.value = newValue // initiates UI update if the View is subscribed to data
}

Thus, the function that changes the value of LiveData or StateFlow in the ViewModel initiates the UI update, as the View (Activity/Fragment) observes these data and reacts to changes.