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)
Part 1:Fundamentals of Jetpack Compose
Part 2:Building User Interfaces
Part 3:Advanced Topics


In this chapter, we looked at the interoperability APIs of Jetpack Compose, which allow you to mix composable functions and traditional Views. We started by incorporating a traditional View hierarchy from a third-party library in a Compose app, using AndroidView(). As recent apps favor View Binding over the direct use of findViewById(), I also showed you how to embed layouts in a composable with View Binding and AndroidViewBinding(). Once you have embedded a View in a Compose UI, you need to share data between the two worlds. The Sharing data between Views and composable functions section explained how to achieve this with ViewModels. The final main section, Embedding composables in View hierarchies, discussed how to include a Compose UI in existing apps using ComposeView.

Chapter 10, Testing and Debugging Compose Apps, focuses on testing your Compose apps. You will learn how to use ComposeTestRule and AndroidComposeTestRule. Also, I will introduce you to the semantics tree...