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Android Programming for Beginners

Android Programming for Beginners

By : John Horton, Mayani
4.1 (47)
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Android Programming for Beginners

Android Programming for Beginners

4.1 (47)
By: John Horton, Mayani

Overview of this book

Android is the most popular OS in the world. There are millions of devices accessing tens of thousands of applications. It is many people's entry point into the world of technology; it is an operating system for everyone. Despite this, the entry-fee to actually make Android applications is usually a computer science degree, or five years’ worth of Java experience. Android Programming for Beginners will be your companion to create Android applications from scratch—whether you’re looking to start your programming career, make an application for work, be reintroduced to mobile development, or are just looking to program for fun. We will introduce you to all the fundamental concepts of programming in an Android context, from the Java basics to working with the Android API. All examples are created from within Android Studio, the official Android development environment that helps supercharge your application development process. After this crash-course, we’ll dive deeper into Android programming and you’ll learn how to create applications with a professional-standard UI through fragments, make location-aware apps with Google Maps integration, and store your user’s data with SQLite. In addition, you’ll see how to make your apps multilingual, capture images from a device’s camera, and work with graphics, sound, and animations too. By the end of this book, you’ll be ready to start building your own custom applications in Android and Java.
Table of Contents (32 chapters)
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31
Index

Chapter 19. Using Multiple Fragments

Now that we have discussed the principals of MVC as well as seen how to implement a Fragment, we can take things a stage further. You will learn how to separate the data layer using a Java singleton and then we will see how Fragments can communicate with each other.

Once we have achieved both of these things, we can implement our first multi-Fragment, orientation-aware app that will put everything we know so far into practice.

Note

In this chapter, to save digital ink, I will stop giving specific instructions on how to make classes and layout files. As a reminder, to create a new class, right-click on the folder that contains all the .java files and navigate to New | Class. Type the name and click on OK. To create a new layout file, right-click on the layout folder and navigate to New | Resource layout file.

In short, we will do the following in this chapter:

  • Explore Java singletons to implement the data layer
  • Implement inter-Fragment communication...

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