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Android Design Patterns and Best Practice

You're reading from   Android Design Patterns and Best Practice Create reliable, robust, and efficient Android apps with industry-standard design patterns

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Product type Paperback
Published in Dec 2016
Publisher Packt
ISBN-13 9781786467218
Length 370 pages
Edition 1st Edition
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Author (1):
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Kyle Mew Kyle Mew
Author Profile Icon Kyle Mew
Kyle Mew
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Table of Contents (14) Chapters Close

Preface 1. Design Patterns FREE CHAPTER 2. Creational Patterns 3. Material Patterns 4. Layout Patterns 5. Structural Patterns 6. Activating Patterns 7. Combining Patterns 8. Composing Patterns 9. Observing Patterns 10. Behavioral Patterns 11. Wearable Patterns 12. Social Patterns 13. Distribution Patterns

Chapter 6. Activating Patterns

The chapters up to this point have served as an extended introduction, exploring the practicalities of Android development and the theory of design pattern application. We have covered many of the fundamental components of an Android app and seen how some of the most useful patterns are made, but we have not yet put the two together.

In this chapter, we will build one of the main sections of our app, an ingredient selection menu. This will involve a scrollable list of fillings that can be selected, expanded, and dismissed. On the way, we will also take a look at the collapsible toolbar and one or two other handy support library features, adding functionality to action buttons, a floating action button, and an alert dialog.

At the heart of this code, we will apply a simple factory pattern to create each ingredient. This will demonstrate nicely how this pattern hides creational logic from client classes. In this chapter, we will create only a single...

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