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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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Using method demo apps

Here we will quickly build two apps to explore methods a bit further. First, we will explore the fundamentals with the Real World Methods app, and then we will glimpse a new topic, method overloading, with the Exploring Method Overloading app.

As usual, you can open the ready-typed code files in the usual way. The next two examples of methods can be found in the download bundle in the Chapter 9 folder and the Real World Methods and Exploring Method Overloading sub-folders.

Real-world methods

First, let's make ourselves some simple working methods complete with return type parameters and fully functioning bodies.

To get started, create a new Android project called Real World Methods, use the Empty Activity template, and leave all the other settings at their default. Switch to the MainActivity.java file by left-clicking the MainActivity.java tab above the editor and we can start coding.

First, add these three methods to the MainActivity class...

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