Book Image

Android UI Development with Jetpack Compose

By : Thomas Künneth
Book Image

Android UI Development with Jetpack Compose

By: Thomas Künneth

Overview of this book

Jetpack Compose is Android’s new framework for building fast, beautiful, and reliable native user interfaces. It simplifies and significantly accelerates UI development on Android using the declarative approach. This book will help developers to get hands-on with Jetpack Compose and adopt a modern way of building Android applications. The book is not an introduction to Android development, but it will build on your knowledge of how Android apps are developed. Complete with hands-on examples, this easy-to-follow guide will get you up to speed with the fundamentals of Jetpack Compose such as state hoisting, unidirectional data flow, and composition over inheritance and help you build your own Android apps using Compose. You'll also cover concepts such as testing, animation, and interoperability with the existing Android UI toolkit. By the end of the book, you'll be able to write your own Android apps using Jetpack Compose.
Table of Contents (16 chapters)
1
Part 1:Fundamentals of Jetpack Compose
5
Part 2:Building User Interfaces
10
Part 3:Advanced Topics

Summary

This chapter showed you how easy it is to use Jetpack Compose to enrich your apps with animations and transitions. We started by using simple animations to visualize state changes. For example, I introduced you to animateColorAsState(). We then used updateTransition() to obtain Transition instances and invoked extension functions such as animateDp() and animateFloat() to animate several values based on state changes simultaneously.

The Showing and hiding UI elements with animations section introduced you to the AnimatedVisibility() composable function, which allows you to apply enter and exit transitions. They are played back while the content appears or disappears. You also learned how to animate size changes using the animateContentSize() modifier.

In the final main section, Spicing up transitions through visual effects, we used the Crossfade() composable function to switch between two layouts with a crossfade animation. Furthermore, you learned about AnimationSpec...