Gist for ViewData best practice blog

MyViewModel.kt

data class MyViewData(val text: String)

class MyViewModel(application: Application): AndroidViewModel(application) {

    private val _myViewData = MutableLiveData<MyViewData>()

    val myViewData: LiveData<MyViewData> = _myViewData

    fun updateViewData() {
        val value = getDistance()
        val distanceUnit = userPref.getDistanceUnit()
        val label = when (distanceUnit) {
            KM -> R.string.km_label
            MILES -> R.string.miles_label
        }
        val text = getApplication<Application>().getString(R.string.my_view_distance, value, label)
        _myViewData.value = MyViewData(text)
    }
}