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Android Programming for Beginners

You're reading from   Android Programming for Beginners Learn all the Java and Android skills you need to start making powerful mobile applications

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Product type Paperback
Published in Dec 2015
Publisher Packt
ISBN-13 9781785883262
Length 698 pages
Edition 1st Edition
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Authors (2):
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Paresh Mayani Paresh Mayani
Author Profile Icon Paresh Mayani
Paresh Mayani
John Horton John Horton
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John Horton
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Toc

Table of Contents (32) Chapters Close

Preface 1. The First App FREE CHAPTER 2. Java – First Contact 3. Exploring Android Studio 4. Designing Layouts 5. Real-World Layouts 6. The Life and Times of an Android App 7. Coding in Java Part 1 – Variables, Decisions, and Loops 8. Coding in Java Part 2 – Methods 9. Object-Oriented Programming 10. Everything's a Class 11. Widget Mania 12. Having a Dialogue with the User 13. Handling and Displaying Arrays of Data 14. Handling and Displaying Notes in Note To Self 15. Android Intent and Persistence 16. UI Animations 17. Sound FX and Supporting Different Versions of Android 18. Design Patterns, Fragments, and the Real World 19. Using Multiple Fragments 20. Paging and Swiping 21. Navigation Drawer and Where It's Snap 22. Capturing Images 23. Using SQLite Databases in Our Apps 24. Adding a Database to Where It's Snap 25. Integrating Google Maps and GPS Locations 26. Upgrading SQLite – Adding Locations and Maps 27. Going Local – Hola! 28. Threads, Touches, Drawing, and a Simple Game 29. Publishing Apps 30. Before You Go Index

Introducing OOP


In Chapter 1, The First App, we mentioned that Java was an object-oriented language. An object-oriented language requires us to use object-oriented programming.

Tip

My ten-year-old son has been especially helpful in devising a unique way of remembering OOP. He suggests simply reversing its letters. I will let the reader decide whether to use this particular memory jogger or one of his or her own.

Let's find out a little bit more.

What is OOP exactly?

OOP is a way of programming that involves breaking our requirements down into chunks that are more manageable than the whole.

Each chunk is self-contained yet potentially reusable by other programs, while working together as a whole with the other chunks.

These chunks are what we have been referring to as objects. When we plan/code an object, we do so with a class. A class can be thought of as the blueprint of an object.

We implement an object of a class. This is called an instance of a class. Think about a house blueprint. You can't...

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