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Learning Java by Building Android Games

Learning Java by Building Android Games

By : John Horton
4 (13)
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Learning Java by Building Android Games

Learning Java by Building Android Games

4 (13)
By: John Horton

Overview of this book

Android is one of the most popular mobile operating systems today. It uses the most popular programming language, Java, as one of the primary languages for building apps of all types. Unlike most other Android books, this book doesn’t assume that you have any prior knowledge of Java programming, instead helps you get started with building Android games as a beginner. This new, improved, and updated third edition of Learning Java by Building Android Games helps you to build Android games from scratch. Once you've got to grips with the fundamentals, the difficulty level increases steadily as you explore key Java topics, such as variables, loops, methods, object-oriented programming (OOP), and design patterns while working with up-to-date code and supporting examples. At each stage, you'll be able to test your understanding by implementing the concepts that you’ve learned to develop a game. Toward the end, you’ll build games such as Sub Hunter, Retro Pong, Bullet Hell, Classic Snake, and Scrolling Shooter. By the end of this Java book, you'll not only have a solid understanding of Java and Android basics but will also have developed five cool games for the Android platform.
Table of Contents (24 chapters)
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10
Chapter 10: Coding the Bat and Ball
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13
Chapter 13: Bitmap Graphics and Measuring Time
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15
Chapter 15: Android Localization – Hola!
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Chapter 17: Manipulating Bitmaps and Coding the Snake Class
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Chapter 22: What Next?
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The Bob (player's) class

This is the final class for this project. As a reminder, we need to make Bob teleport every time the player touches the screen and he should teleport to the location of the touch. I predict a teleport method is quite likely. As we code this class, we will also see how to use a .png file to represent Bob instead of just using boring rectangles, as we have done so far.

The first thing we will do is add the graphics (bob.png) file to the project.

Add the Bob graphic to the project

Right-click and select Copy to copy the bob.png graphics file on the GitHub repo in the Chapter 13/drawable folder.

In Android Studio, locate the app/res/drawable folder in the project explorer window. The following screenshot makes it clear where this folder can be located:

Figure 13.1 – Locating the drawable folder

Right-click on the drawable folder and select Paste to add the bob.png file to the project. Click OK twice to confirm the...

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