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Android Programming for Beginners

Android Programming for Beginners

By : John Horton
4.2 (12)
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Android Programming for Beginners

Android Programming for Beginners

4.2 (12)
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)
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Implementing a particle system effect

A particle system is a system that controls particles. In our case, ParticleSystem is a class we will write that will spawn instances (lots of instances) of the Particle class (also a class we will write) that will create a simple explosion-like effect.

Here is an image of some particles controlled by a particle system:

Figure 22.1 – Particle system effect

Just for clarification, each of the colored squares is an instance of the Particle class and all the Particle instances are controlled and held by the ParticleSystem class. In addition, the user will create multiple (hundreds) of ParticleSystem instances by drawing with their finger. The particles will appear as dots or blocks until the user taps the pause button, when they will come to life. We will examine the code closely enough that you will be able to set, in code, the size, color, speed, and quantity of Particle and ParticleSystem instances.

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