Book Image

Hands-On Android UI Development

By : Jason Morris
Book Image

Hands-On Android UI Development

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 (21 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
13
Activity Lifecycle

Coordinating the Overview Screen


The Overview screen you built in Chapter 7, Creating Overview Screens, is a perfect candidate for a CoordinatorLayout. To start with, the allowance overview bar can be made to collapse, and unfold as the user scrolls. This allows more space for the claim items on the screen as they are scrolling, and by expanding the overview again when they scroll upward, the user doesn't have to scroll all the way to the top to get the overview back.

This behavior won't just use the CoordinatorLayout, but will also need the help of the AppBarLayout and CollapsingToolbarLayout classes as you'll need to take control of the Material Design scaffolding to make it work. Follow these steps to move the allowance overview into the header bar and make it collapse:

  1. First, open the AndroidManifest file from the manifests folder in the project tree (use the Android perspective).
  2. Find the OverviewActivity entry and add a theme attribute that will tell the system not to provide a system...