Book Image

Android UI Development with Jetpack Compose - Second Edition

By : Thomas Künneth
5 (1)
Book Image

Android UI Development with Jetpack Compose - Second Edition

5 (1)
By: Thomas Künneth

Overview of this book

Compose has caused a paradigm shift in Android development, introducing a variety of new concepts that are essential to an Android developer’s learning journey. It solves a lot of pain points associated with Android development and is touted to become the default way to building Android apps over the next few years. This second edition has been thoroughly updated to reflect all changes and additions that were made by Google since the initial stable release, and all examples are based on Material 3 (also called Material You). This book uses practical examples to help you understand the fundamental concepts of Jetpack Compose and how to use them when you are building your own Android applications. You’ll begin by getting an in-depth explanation of the declarative approach, along with its differences from and advantages over traditional user interface (UI) frameworks. Having laid this foundation, the next set of chapters take a practical approach to show you how to write your first composable function. The chapters will also help you master layouts, an important core component of every UI framework, and then move to more advanced topics such as animation, testing, and architectural best practices. By the end of this book, you’ll be able to write your own Android apps using Jetpack Compose and Material Design.
Table of Contents (18 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...