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Hands-On Android UI Development

You're reading from   Hands-On Android UI Development Design and develop attractive user interfaces for Android applications

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781788475051
Length 348 pages
Edition 1st Edition
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Author (1):
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Jason Morris Jason Morris
Author Profile Icon Jason Morris
Jason Morris
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Table of Contents (15) Chapters Close

Preface 1. Creating Android Layouts 2. Designing Form Screens FREE CHAPTER 3. Taking Actions 4. Composing User Interfaces 5. Binding Data to Widgets 6. Storing and Retrieving Data 7. Creating Overview Screens 8. Designing Material Layouts 9. Navigating Effectively 10. Making Overviews Even Better 11. Polishing Your Design 12. Customizing Widgets and Layouts 13. Activity Lifecycle
14. Test Your Knowledge Answers

Activity Lifecycle

Every Activity within an app runs within the App Process, but each Activity is also subject to its own lifecycle. These are methods that are triggered by the platform when the Activity is about to change states, for example, when the user exits the Activity temporarily to use another Activity (whether it's in the same application, or another one). Fragment objects are also subject to a lifecycle, and while it mostly follows the same pattern as the Activity lifecycle, it also has the notion of being "attached" and "detached" from its parent Activity.

The following workflow explains the Activity lifecycle in detail:

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