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Android Programming for Beginners

Android Programming for Beginners

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

Android Programming for Beginners

4.1 (47)
By: John Horton, Paresh 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 20. Paging and Swiping

Paging is the act of moving from page to page, and on Android, we do this by swiping a finger across the screen. The current page transitions in a direction and speed to match the finger movement. It is a useful and practical way to navigate around an app, but perhaps even more than this, it is an extremely satisfying visual effect for the user. Also, as with ListView, we can selectively load just the data required for the current page, and perhaps the data for the previous and next pages.

In the next screenshot, you can see the calendar app on the Nexus 5 emulator paging between months. Be sure to launch an emulator and give it a try if you are unsure how paging and swiping works:

Paging and Swiping

In the next figure, we can see the famous Angry Birds level-selection menu showing swiping/paging in action:

Paging and Swiping

The Android API, as you would have come to expect by now, has some solutions through which you can achieve paging in a quite simple manner.

In this chapter, you will...

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Android Programming for Beginners
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