Book Image

Android Programming for Beginners - Third Edition

By : John Horton
Book Image

Android Programming for Beginners - Third Edition

By: John Horton

Overview of this book

Do you want to make a career in programming but don’t know where to start? Do you have a great idea for an app but don't know how to make it a reality? Or are you worried that you’ll have to learn Java programming to become an Android developer? Look no further! This new and expanded third edition of Android Programming for Beginners will be your guide to creating Android applications from scratch. The book starts by introducing you to all the fundamental concepts of programming in an Android context, from the basics of Java to working with the Android API. You’ll learn with the help of examples that use up-to-date API classes and are created within Android Studio, the official Android development environment that helps supercharge your mobile application development process. After a crash course on the key programming concepts, you’ll explore Android programming and get to grips with creating applications with a professional-standard UI using fragments and storing user data with SQLite. This Android Java book also shows you how you can make your apps multilingual, draw on the screen with a finger, and work with graphics, sound, and animations. By the end of this Android programming book, you'll be ready to start building your own custom applications in Android and Java.
Table of Contents (30 chapters)

Adding RecyclerView, RecyclerAdapter, and ArrayList to the Note to Self project

Open the Note to Self project. As a reminder, if you want to see the completed code and working app as a result of completing this chapter, it can be found in the Chapter 16/Note to self folder.

Note

As the required actions in this chapter jump around between different files, classes, and methods, I encourage you to follow along with the files from the download bundle by keeping it open for reference in your preferred text editor.

Removing the temporary "Show Note" button and adding RecyclerView

These next few steps will get rid of the temporary code we added in Chapter 14, Android Dialog Windows, and set up our RecyclerView widget ready for binding to RecyclerAdapter later in the chapter:

  1. In the content_main.xml file, remove the temporary Button with an ID of button, which we added previously for testing purposes.
  2. In the onCreate method of the MainActivity.java file,...