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You're reading from  Android Studio 4.1 Development Essentials – Java Edition

Product typeBook
Published inMay 2021
PublisherPackt
ISBN-139781801815161
Edition1st Edition
Tools
Android Studio
Concepts
Android Development
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Author (1)
Neil Smyth
Neil Smyth
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Neil Smyth

Neil Smyth has over 25 years of experience in the IT industry, including roles in software development and enterprise-level UNIX and Linux system administration. In addition to a bachelor’s degree in information technology, he also holds A+, Security+, Network+, Project+, and Microsoft Certified Professional certifications and is a CIW Database Design Specialist. Neil is the co-founder and CEO of Payload Media, Inc. (a technical content publishing company), and the author of the Essentials range of programming and system administration books.
Read more about Neil Smyth

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38.4 Lifecycle States and Events

When the status of a lifecycle owner changes, the assigned Lifecycle object will be updated with the new state. At any given time, a lifecycle owner will be in one of the following five states:

•Lifecycle.State.INITIALIZED

•Lifecycle.State.CREATED

•Lifecycle.State.STARTED

•Lifecycle.State.RESUMED

•Lifecycle.State.DESTROYED

As the component transitions through the different states, the Lifecycle object will trigger events on any observers that have been added to the list. The following events are available for implementation within the lifecycle observer:

•Lifecycle.Event.ON_CREATE

•Lifecycle.Event.ON_START

•Lifecycle.Event.ON_RESUME

•Lifecycle.Event.ON_PAUSE

•Lifecycle.Event.ON_STOP

•Lifecycle.Event.ON_DESTROY

•Lifecycle.Event.ON_ANY

Annotations are used within the observer class to associate methods with lifecycle events. The...

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Android Studio 4.1 Development Essentials – Java Edition
Published in: May 2021Publisher: PacktISBN-13: 9781801815161
© 2021 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Neil Smyth

Neil Smyth has over 25 years of experience in the IT industry, including roles in software development and enterprise-level UNIX and Linux system administration. In addition to a bachelor’s degree in information technology, he also holds A+, Security+, Network+, Project+, and Microsoft Certified Professional certifications and is a CIW Database Design Specialist. Neil is the co-founder and CEO of Payload Media, Inc. (a technical content publishing company), and the author of the Essentials range of programming and system administration books.
Read more about Neil Smyth

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