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Hands-On Android UI Development

Hands-On Android UI Development

By : Jason Morris
3.8 (4)
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Hands-On Android UI Development

Hands-On Android UI Development

3.8 (4)
By: Jason Morris

Overview of this book

A great user interface (UI) can spell the difference between success and failure for any new application. This book will show you not just how to code great UIs, but how to design them as well. It will take novice Android developers on a journey, showing them how to leverage the Android platform to produce stunning Android applications. Begin with the basics of creating Android applications and then move on to topics such as screen and layout design. Next, learn about techniques that will help improve performance for your application. Also, explore how to create reactive applications that are fast, animated, and guide the user toward their goals with minimal distraction. Understand Android architecture components and learn how to build your application to automatically respond to changes made by the user. Great platforms are not always enough, so this book also focuses on creating custom components, layout managers, and 2D graphics. Also, explore many tips and best practices to ease your UI development process. By the end, you'll be able to design and build not only amazing UIs, but also systems that provide the best possible user experience.
Table of Contents (15 chapters)
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13
Activity Lifecycle

Navigating using Fragments


So far in the book, you've mostly been navigating users from one Activity to another Activity, and this is in fact how most applications are built. However, there is another option, which is often much more flexible and allows you to build even more modular applications--navigation using Fragment instances. So far, we've only really looked at Fragments as little blocks of your application that can be assembled to form parts of a screen, but they can be so much more than that.

The tabbed Activity classes both provide a sort of navigation using the ViewPager class and the FragmentPagerAdapter class. In these cases, each of the pages that the user can swipe to is a complete Fragment, with its life cycle that is paused and resumed, stopped, and started as the user swipes the Fragment in or out of view.

If you look into the FragmentPagerAdapter class, you'll find that it doesn't add and remove the Fragment view instances directly to the ViewPager object. Instead, it uses...

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