Book Image

Android Programming for Beginners - Third Edition

By : John Horton
Book Image

Android Programming for Beginners - Third Edition

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)

Chapter 27: Android Databases

If we are going to make apps that offer our users significant features, then we are almost certainly going to need a way to manage, store, and filter significant amounts of data.

It is possible to store very large amounts of data efficiently with JSON, but when we need to use that data selectively rather than simply restricting ourselves to the options of "save everything" and "load everything," we need to think about what other options are available.

A good computer science course would probably teach you about the algorithms necessary to handle sorting and filtering our data, but the effort involved would be quite extensive, and what are the chances of us coming up with a solution that is as good as something made by the people who gave us the Android API?

As is so often the case, it makes the most sense to use the solutions provided in the Android API. As we have seen, the JSON and SharedPreferences classes have their place...