Book Image

Android Programming for Beginners - Third Edition

By : John Horton
Book Image

Android Programming for Beginners - Third Edition

By: John Horton

Overview of this book

Do you want to make a career in programming but don’t know where to start? Do you have a great idea for an app but don't know how to make it a reality? Or are you worried that you’ll have to learn Java programming to become an Android developer? Look no further! This new and expanded third edition of Android Programming for Beginners will be your guide to creating Android applications from scratch. The book starts by introducing you to all the fundamental concepts of programming in an Android context, from the basics of Java to working with the Android API. You’ll learn with the help of examples that use up-to-date API classes and are created within Android Studio, the official Android development environment that helps supercharge your mobile application development process. After a crash course on the key programming concepts, you’ll explore Android programming and get to grips with creating applications with a professional-standard UI using fragments and storing user data with SQLite. This Android Java book also shows you how you can make your apps multilingual, draw on the screen with a finger, and work with graphics, sound, and animations. By the end of this Android programming book, you'll be ready to start building your own custom applications in Android and Java.
Table of Contents (30 chapters)

Encapsulation and static methods mini-app

We have looked at the intricate way that access to variables and their scope is controlled and it would serve us well to look at an example of them in action. These will not so much be practical real-world examples of variable use, more a demonstration to help understand access modifiers for classes, methods, and variables alongside the different types of variables such as reference or primitive and local or instance, along with the new concepts of static and final variables and the this keyword.

The completed code is in the Chapter 11 folder of the download bundle. It is called Access Scope This And Static.

Create a new Empty Activity project and call it Access Scope This And Static.

Create a new class by right-clicking on the existing MainActivity class in the project explorer and clicking New | Java Class. Name the new class AlienShip.

Now we will declare our new class and some member variables. Note that numShips is private...