Method Detail

• empty

  public static <T> Observer<T> empty()

  Returns an inert Observer that does nothing in response to the emissions or notifications from any Observable it subscribes to but will throw an exception if its onError method is called.

  Returns:

  an inert Observer

• create

  public static final <T> Observer<T> create(Action1<? super T> onNext)

  Creates an Observer that receives the emissions of any Observable it subscribes to via onNext but ignores onCompleted notifications; it will throw an OnErrorNotImplementedException if onError is invoked.

  Parameters:

  onNext - a function that handles each item emitted by an Observable

  Returns:

  an Observer that calls onNext for each emitted item from the Observable the Observer subscribes to

  Throws:

  IllegalArgumentException - if onNext is null

• create

  public static final <T> Observer<T> create(Action1<? super T> onNext,
                                             Action1<Throwable> onError)

  Creates an Observer that receives the emissions of any Observable it subscribes to via onNext and handles any onError notification but ignores an onCompleted notification.

  Parameters:

  onNext - a function that handles each item emitted by an Observable

  onError - a function that handles an error notification if one is sent by an Observable

  Returns:

  an Observer that calls onNext for each emitted item from the Observable the Observer subscribes to, and calls onError if the Observable notifies of an error

  Throws:

  IllegalArgumentException - if either onNext or onError are null

• create

  public static final <T> Observer<T> create(Action1<? super T> onNext,
                                             Action1<Throwable> onError,
                                             Action0 onComplete)

  Creates an Observer that receives the emissions of any Observable it subscribes to via onNext and handles any onError or onCompleted notifications.

  Parameters:

  onNext - a function that handles each item emitted by an Observable

  onError - a function that handles an error notification if one is sent by an Observable

  onComplete - a function that handles a sequence complete notification if one is sent by an Observable

  Returns:

  an Observer that calls onNext for each emitted item from the Observable the Observer subscribes to, calls onError if the Observable notifies of an error, and calls onComplete if the Observable notifies that the observable sequence is complete

  Throws:

  IllegalArgumentException - if either onNext, onError, or onComplete are null