Easy way to Toast with ViewModel, LiveData & a bit of abstraction. 2/4

BaseViewModel.kt

/**
 * Base for other ViewModel
 */
abstract class BaseViewModel: ViewModel() {

    // Mutable/LiveData of String resource reference Event
    private val _message = MutableLiveData<Event<Int>>()
    val message : LiveData<Event<Int>>
        get() = _message

    // Post in background thread
    fun postMessage(@StringRes message: Int) {
        _message.postValue(Event(message))
    }

    // Post in main thread
    fun setMessage(@StringRes message: Int) {
        _message.value = Event(message)
    }

}