How to handle error states with LiveData?

Question

The new LiveData can be used as a replacement for RxJava\'s observables in some scenarios. However, unlike Observable, LiveData has no callback for

Answer 1

I have built a movie search app here in which I have used to different LiveData objects, one for the successful response from the network and one for the unsuccessful:

private val resultListObservable = MutableLiveData>()
private val resultListErrorObservable = MutableLiveData()

fun findAddress(address: String) {
    mainModel.fetchAddress(address)!!.subscribeOn(schedulersWrapper.io()).observeOn(schedulersWrapper.main()).subscribeWith(object : DisposableSingleObserver?>() {
        override fun onSuccess(t: List) {
            entityList = t
            resultListObservable.postValue(fetchItemTextFrom(t))
        }

        override fun onError(e: Throwable) {
            resultListErrorObservable.postValue(e as HttpException)
        }
    })
}