RxJava

rx.subjects
Class BehaviorSubject<T>

java.lang.Object
  rx.Observable<R>
      rx.subjects.Subject<T,T>
          rx.subjects.BehaviorSubject<T>

Type Parameters:

T -

All Implemented Interfaces:

Observer<T>

public class BehaviorSubject<T>
extends Subject<T,T>

Subject that publishes the most recent and all subsequent events to each subscribed Observer.

Example usage:

 / observer will receive all events.
  BehaviorSubject<Object> subject = BehaviorSubject.createWithDefaultValue("default");
  subject.subscribe(observer);
  subject.onNext("one");
  subject.onNext("two");
  subject.onNext("three");

  // observer will receive the "one", "two" and "three" events, but not "zero"
  BehaviorSubject<Object> subject = BehaviorSubject.createWithDefaultValue("default");
  subject.onNext("zero");
  subject.onNext("one");
  subject.subscribe(observer);
  subject.onNext("two");
  subject.onNext("three");

   

Nested Class Summary

Nested classes/interfaces inherited from class rx.Observable

Observable.OnSubscribeFunc<T>

Constructor Summary

protected

BehaviorSubject(java.util.concurrent.atomic.AtomicReference<T> currentValue, Observable.OnSubscribeFunc<T> onSubscribe, java.util.concurrent.ConcurrentHashMap<Subscription,Observer<? super T>> observers)

Method Summary

static <T> BehaviorSubject<T>	createWithDefaultValue(T defaultValue) Creates a BehaviorSubject which publishes the last and all subsequent events to each Observer that subscribes to it.
void	onCompleted() Notifies the Observer that the Observable has finished sending push-based notifications.
void	onError(java.lang.Throwable e) Notifies the Observer that the Observable has experienced an error condition.
void	onNext(T args) Provides the Observer with new data.

Methods inherited from class rx.Observable

aggregate, aggregate, all, amb, amb, amb, amb, amb, amb, amb, amb, amb, average, averageDoubles, averageFloats, averageLongs, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, buffer, cache, cast, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, combineLatest, concat, concat, concat, concat, concat, concat, concat, concat, concat, contains, count, create, debounce, debounce, defaultIfEmpty, defer, dematerialize, distinct, distinct, distinctUntilChanged, distinctUntilChanged, doOnCompleted, doOnEach, doOnEach, doOnEach, doOnEach, doOnError, elementAt, elementAtOrDefault, empty, empty, error, error, exists, filter, finallyDo, first, first, firstOrDefault, firstOrDefault, flatMap, from, from, from, from, from, from, from, from, from, from, from, from, from, from, from, groupBy, groupBy, ignoreElements, interval, interval, isEmpty, just, just, last, map, mapMany, mapWithIndex, materialize, max, max, maxBy, maxBy, merge, merge, merge, merge, merge, merge, merge, merge, merge, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, min, min, minBy, minBy, multicast, never, observeOn, ofType, onErrorResumeNext, onErrorResumeNext, onErrorReturn, onExceptionResumeNext, parallel, parallel, publish, publishLast, range, reduce, reduce, replay, retry, retry, sample, sample, scan, scan, sequenceEqual, sequenceEqual, skip, skipLast, skipWhile, skipWhileWithIndex, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, startWith, subscribe, subscribe, subscribe, subscribe, subscribe, subscribe, subscribe, subscribe, subscribeOn, sum, sumDoubles, sumFloats, sumLongs, switchDo, switchOnNext, synchronize, synchronize, synchronize, take, takeFirst, takeFirst, takeLast, takeUntil, takeWhile, takeWhileWithIndex, throttleFirst, throttleFirst, throttleLast, throttleLast, throttleWithTimeout, throttleWithTimeout, timeInterval, timeInterval, timeout, timeout, timeout, timeout, timestamp, toBlockingObservable, toList, toSortedList, toSortedList, using, where, window, window, window, window, window, window, window, window, window, window, zip, zip, zip, zip, zip, zip, zip, zip, zip, zip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BehaviorSubject

protected BehaviorSubject(java.util.concurrent.atomic.AtomicReference<T> currentValue,
                          Observable.OnSubscribeFunc<T> onSubscribe,
                          java.util.concurrent.ConcurrentHashMap<Subscription,Observer<? super T>> observers)

Method Detail

createWithDefaultValue

public static <T> BehaviorSubject<T> createWithDefaultValue(T defaultValue)

Creates a BehaviorSubject which publishes the last and all subsequent events to each Observer that subscribes to it.

Parameters:

defaultValue - The value which will be published to any Observer as long as the BehaviorSubject has not yet received any events.

Returns:

the constructed BehaviorSubject.

onCompleted

public void onCompleted()

Description copied from interface: Observer

Notifies the Observer that the Observable has finished sending push-based notifications.

The Observable will not call this closure if it calls onError.

onError

public void onError(java.lang.Throwable e)

Description copied from interface: Observer

Notifies the Observer that the Observable has experienced an error condition.

If the Observable calls this closure, it will not thereafter call onNext or onCompleted.

onNext

public void onNext(T args)

Description copied from interface: Observer

Provides the Observer with new data.

The Observable calls this closure 1 or more times, unless it calls onError in which case this closure may never be called.

The Observable will not call this closure again after it calls either onCompleted or onError.