Book Image

Android Programming for Beginners

By : John Horton, Paresh Mayani
Book Image

Android Programming for Beginners

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 (37 chapters)
Android Programming for Beginners
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Adding locations and maps to Where it's Snap


We want to add a feature to our app where the user can click on the SHOW MAP button while viewing a photo, and the app will then show a map with the location of where the photo was taken in the world.

We have a good insight into this already from the previous chapter, when we viewed a specific GPS location on Google Maps.

The functionality we need to add and the issues we need to overcome are as follows:

  • To capture and store the location each time a photo is taken

  • When the SHOW MAP button is clicked on, we launch a map screen of that location

  • Change the Photo class and database structures to store GPS locations

  • Modify DataManager and helper methods to store and retrieve the extra bit of data

  • Add the Google Maps functionality to the SHOW MAP button

Initially, in the context of simply developing an app, this might seem straightforward. Now, imagine that our app is already published. We have a million users with lots of photos already stored in their database...