Book Image

Modern Android 13 Development Cookbook

By : Madona S. Wambua
5 (1)
Book Image

Modern Android 13 Development Cookbook

5 (1)
By: Madona S. Wambua

Overview of this book

Android is a powerful operating system widely used in various devices, phones, TVs, wearables, automobiles, and more. This Android cookbook will teach you how to leverage the latest Android development technologies for creating incredible applications while making effective use of popular Jetpack libraries. You’ll also learn which critical principles to consider when developing Android apps. The book begins with recipes to get you started with the declarative UI framework, Jetpack Compose, and help you with handling UI states, Navigation, Hilt, Room, Wear OS, and more as you learn what's new in modern Android development. Subsequent chapters will focus on developing apps for large screens, leveraging Jetpack’s WorkManager, managing graphic user interface alerts, and tips and tricks within Android studio. Throughout the book, you'll also see testing being implemented for enhancing Android development, and gain insights into harnessing the integrated development environment of Android studio. Finally, you’ll discover best practices for robust modern app development. By the end of this book, you’ll be able to build an Android application using the Kotlin programming language and the newest modern Android development technologies, resulting in highly efficient applications.
Table of Contents (15 chapters)

Creating your first button

In this recipe, we will create our first button in Wear OS to explore the principles and best practices of building in Wear OS.

Getting ready

You need to have completed the previous recipe to get started on this one. We will be building upon our already created WearOSExample project.

How to do it…

To create your first button on Wear OS in Jetpack Compose, you can follow these steps:

  1. Using the already-created project, we will be adding a new button. Let’s go ahead and remove some of the already provided code, fun Greeting(greetingName: String):
Figure 10.7 – A screenshot showing what to be deleted

Figure 10.7 – A screenshot showing what to be deleted

  1. Removing the Greeting() function called in WearOSExampleTheme will complain; go ahead and remove that too.
  2. Then create a new Composable function that will define your button. You can use the Button function provided by Jetpack Compose:
    @Composable
    fun SampleButton() {
       ...