Book Image

Android Programming for Beginners - Second Edition

By : John Horton
Book Image

Android Programming for Beginners - Second Edition

By: John Horton

Overview of this book

Are you trying to start a career in programming, but haven't found the right way in? Do you have a great idea for an app, but don't know how to make it a reality? Or maybe you're just frustrated that in order to learn Android, you must know Java. If so, then this book is for you. This new and expanded second edition of Android Programming for Beginners will be your companion to create Android Pie applications from scratch. We will introduce you to all the fundamental concepts of programming in an Android context, from the basics of Java to working with the Android API. All examples use the up-to-date API classes, and 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 and store your user's data with SQLite. In addition, you'll see how to make your apps multilingual, draw to the screen with a finger, 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 (35 chapters)
Android Programming for Beginners - Second Edition
Contributors
Preface
Other Books You May Enjoy
Index

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 based on completing this chapter, it can be found in the Chapter 16/Note to self folder.

Note

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

Removing the temporary Show Note button and adding the 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 ready for binding to the 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 MainActivity.java, delete the Button declaration and initialization, along with the anonymous class...