Book Image

Android Programming with Kotlin for Beginners

By : John Horton
5 (1)
Book Image

Android Programming with Kotlin for Beginners

5 (1)
By: John Horton

Overview of this book

Android is the most popular mobile operating system in the world and Kotlin has been declared by Google as a first-class programming language to build Android apps. With the imminent arrival of the most anticipated Android update, Android 10 (Q), this book gets you started building apps compatible with the latest version of Android. It adopts a project-style approach, where we focus on teaching the fundamentals of Android app development and the essentials of Kotlin by building three real-world apps and more than a dozen mini-apps. The book begins by giving you a strong grasp of how Kotlin and Android work together before gradually moving onto exploring the various Android APIs for building stunning apps for Android with ease. You will learn to make your apps more presentable using different layouts. You will dive deep into Kotlin programming concepts such as variables, functions, data structures, Object-Oriented code, and how to connect your Kotlin code to the UI. You will learn to add multilingual text so that your app is accessible to millions of more potential users. You will learn how animation, graphics, and sound effects work and are implemented in your Android app. By the end of the book, you will have sound knowledge about significant Kotlin programming concepts and start building your own fully featured Android apps.
Table of Contents (33 chapters)
Android Programming with Kotlin for Beginners
Contributors
Preface
Index

Exploring the Android emulator


As we progress, it helps to be familiar with exactly how to use the Android emulator. If you haven't used the latest version of Android, some of the ways to achieve even simple tasks (such as viewing all the apps) can be different to how your current device works. In addition, we want to know how to use the extra controls that come with all emulators.

The emulator control panel

You probably noticed the mini control panel that appears beside the emulator when you run it. Let's go through some of the most useful controls. Take a look at this screenshot of the emulator control panel. I have annotated it to aid the discussion:

I will just mention the more obvious controls and go into a bit more depth when necessary:

  1. These are the window controls. They minimize or close the emulator window.

  2. From top to bottom, the first button is used to power-off the emulator, to simulate powering off the actual device. The next two icons raise and lower the volume.

  3. These two buttons...