You're reading from Learning Java by Building Android Games Learn Java and Android from scratch by building five exciting games

Product type Paperback

Published in Mar 2021

Publisher Packt

ISBN-13 9781800565869

Length 686 pages

Edition 3rd Edition

Languages

Java

Tools

Android

Concepts

Mobile Game Development

Author (1):

John Horton

View More author details

Table of Contents (24) Chapters

Preface

1. Chapter 1: Java, Android, and Game Development

2. Chapter 2: Java – First Contact FREE CHAPTER

3. Chapter 3: Variables, Operators, and Expressions

4. Chapter 4: Structuring Code with Java Methods

5. Chapter 5: The Android Canvas Class – Drawing to the Screen

6. Chapter 6: Repeating Blocks of Code with Loops

7. Chapter 7: Making Decisions with Java If, Else, and Switch

8. Chapter 8: Object-Oriented Programming

9. Chapter 9: The Game Engine, Threads, and the Game Loop

10. Chapter 10: Coding the Bat and Ball

11. Chapter 11: Collisions, Sound Effects, and Supporting Different Versions of Android

12. Chapter 12: Handling Lots of Data with Arrays

13. Chapter 13: Bitmap Graphics and Measuring Time

14. Chapter 14: Java Collections, the Stack, the Heap, and the Garbage Collector

15. Chapter 15: Android Localization – Hola!

16. Chapter 16: Collections and Enumerations

17. Chapter 17: Manipulating Bitmaps and Coding the Snake Class

18. Chapter 18: Introduction to Design Patterns and Much More!

19. Chapter 19: Listening with the Observer Pattern, Multitouch, and Building a Particle System

20. Chapter 20: More Patterns, a Scrolling Background, and Building the Player's Ship

21. Chapter 21: Completing the Scrolling Shooter Game

22. Chapter 22: What Next?

23. Other Books You May Enjoy

The Android Studio Profiler tool

The Android Studio Profiler tool is quite complex and deep. However, it is very simple to do some really significant measurements with our game. We can see how many device resources our app is using and therefore attempt to improve the efficiency of our game to make it run more efficiently and use fewer resources. By resources, I am talking about CPU and memory usage.

Code optimization is beyond the scope of this book, but a look at how we begin to monitor our game's performance is a good introduction. Select View from the main Android Studio menu and then select Tool Windows | Profiler.

You will see the following window in the lower area of Android Studio:

Figure 13.3 – The Android Profiler window

To get started using the profiler, run the Bullet Hell app. The profiler should begin to display graphs and data as shown in the following diagram.

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