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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

Coding TitlesFragment

We are really close to being able to actually show a photo in our Photos app. We need to load a list of photo titles from our database into ListView, provided by ListFragment, and handle what happens when the user clicks on a list item.

Some of the code in here won't make complete sense until we finish coding MainActivity, which will, of course, handle the communication between TitlesFragment and ViewFragment, as well as TagsFragment and TitlesFragment.

Let's add two new members to TitlesFragment—a Cursor member to load some data into and an instance of our new interface.

Add the two highlighted member variables where shown:

public class TitlesFragment extends ListFragment {

  private Cursor mCursor;
  private ActivityComs mActivityComs;

  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
  }

Next, in the onCreate method, we do the following:

  • Get a string to represent the tag from Bundle, using getArguments...

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