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FirebaseStorage Framework Reference

FIRStorageObservableTask


@interface FIRStorageObservableTask : FIRStorageTask

An extended StorageTask providing observable semantics that can be used for responding to changes in task state. Observers produce a StorageHandle, which is used to keep track of and remove specific observers at a later date.

  • Observes changes in the upload status: Resume, Pause, Progress, Success, and Failure. \param status The StorageTaskStatus change to observe.

    \param handler A callback that fires every time the status event occurs, containing a StorageTaskSnapshot describing task state.

    returns: A task handle that can be used to remove the observer at a later date.

    Declaration

    Objective-C

    - (NSString *_Nonnull)
    observeStatus:(enum FIRStorageTaskStatus)status
          handler:(void (^_Nonnull)(FIRStorageTaskSnapshot *_Nonnull))handler;

  • Removes the single observer with the provided handle. \param handle The handle of the task to remove.

    Declaration

    Objective-C

    - (void)removeObserverWithHandle:(NSString *_Nonnull)handle;

  • Removes all observers for a single status. \param status A StorageTaskStatus to remove all listeners for.

    Declaration

    Objective-C

    - (void)removeAllObserversForStatus:(enum FIRStorageTaskStatus)status;

  • Removes all observers.

    Declaration

    Objective-C

    - (void)removeAllObservers;