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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

Creating an Entity model


Room, much like an SQL database, is optionally asymmetric; what you write to it might not be in the exact same format as what you read from it. When you write to a Room database, you save Entity objects, but when you read, you can read virtually any Java object. This allows you to define object models that best suit your user interface, and load them with JOIN queries rather than resorting to one or more additional queries for each object you wish to present to the user. While JOIN queries might be overly expensive on a server, on a mobile device they are often significantly faster than a multiquery alternative. As such, when defining an entity model, it's worth considering what you will need to save in your database as well as what specific fields you will need on your user interface. The data you need to write to storage becomes your entity, while the fields on your user interface become fields in Java objects that can be queried through Room.

An Entity class in...

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