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View UIState.kt
sealed class UIState<out R> {
object Loading : UIState<Nothing>()
object Retrying : UIState<Nothing>()
object SwipeRefreshing : UIState<Nothing>()
data class Success<T>(val data: T) : UIState<T>()
data class Failure(val exception: Exception) : UIState<Nothing>()
data class SwipeRefreshFailure(val exception: Exception) : UIState<Nothing>()
}
View Action.kt
sealed class Action {
object Load : Action()
object SwipeRefresh : Action()
object Retry : Action()
}
View ActionStateLiveData.kt
class ActionStateLiveData<T>(
private val coroutineContext: CoroutineContext,
fetchData: (suspend () -> Response<T>)
) {
private val action = MutableLiveData<Action>()
private var data: T? = null // backing data
val state = action.switchMap {
liveData(context = coroutineContext) {
when (action.value) {
View Retry.kt
Observable.fromPublisher<String> {
it.onNext("Doing a network call!")
Thread.sleep(1000) // Long running process
it.onError(Exception()) // Some error thrown
}.retryWhen { errors ->
errors.zipWith(Observable.range(1, 3) // Zip error observable with a range one
.concatMap { retryCount ->
Observable.timer(retryCount.toLong() * 10, TimeUnit.SECONDS)
}
)
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