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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

Building a Fragment pager/slider app

We can put complete Fragments as pages in PagerAdapter. This is quite powerful because as we know, a Fragment can have a lot of functionality, even a full-fledged UI.

To keep the code short and straightforward, we will add a single TextView to each Fragment layout, just to demonstrate that the pager is working. When we see how easy it is to get a reference to TextView, however, it should be clear as to how we could easily add any layout that we have learned about so far and then let the user interact with it.

The first thing we will do is build the content for the slider. In this case, of course, the content is Fragment. We will build one simple class called SimpleFragment and one really simple layout called fragment_layout.

This implies that each slide will be identical in appearance, but we will use the Fragment ID passed in by FragmentManager at the instantiation as the text for the one and only TextView. This way, when we flip/swipe through Fragments...

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