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You're reading from  Asynchronous Android Programming - Second Edition

Product typeBook
Published inJul 2016
Reading LevelBeginner
PublisherPackt
ISBN-139781785883248
Edition2nd Edition
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Steve Liles
Steve Liles
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Steve Liles

Steve Liles is a self-confessed geek and has been an Android fan since the launch day of the G1. When he isn't at work building publishing systems and apps for newspapers and magazines, you'll find him tinkering with his own apps, building 3D printers, or playing RTS games. He is currently working with a start-up to build an advertising system that links the print and digital worlds using computer vision on Android and iOS devices.
Read more about Steve Liles

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Removing sticky events


In some use cases, it could be convienient to invalidate a sticky event from the Bus and prevent a cached event from getting delivered to the following Subscribers. EventBus allows us to clear the sticky events by calling the following functions:

  • removeStickyEvent(<MyEventClass>) – Removes and gets the recent sticky event for the given event type

  • removeStickyEvent(Object event) - Removes the sticky event if it equals the passed event

  • removeAllStickyEvents() - Removes the sticky events for all types

Let's use one removeStickyEvent function to remove the latest sticky LocationEvent from the bus:

// Check if the sticky event exist on the Bus  
LocationEvent evt = EventBus.getDefault().
                        getStickyEvent(LocationEvent.class);
// Check if the event is null
if ( evt != null) {
  EventBus.getDefault().removeStickyEvent(stickyEvent);
}

After we remove the sticky event from the bus, the latest LocationEvent will be removed from the bus and no event...

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Asynchronous Android Programming - Second Edition
Published in: Jul 2016Publisher: PacktISBN-13: 9781785883248

Author (1)

author image
Steve Liles

Steve Liles is a self-confessed geek and has been an Android fan since the launch day of the G1. When he isn't at work building publishing systems and apps for newspapers and magazines, you'll find him tinkering with his own apps, building 3D printers, or playing RTS games. He is currently working with a start-up to build an advertising system that links the print and digital worlds using computer vision on Android and iOS devices.
Read more about Steve Liles