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

Bitmap manipulation demo app


Now we have studied the theory, let's draw and spin some bitmaps. Create a new project and call it Manipulating Bitmaps. This time, be sure to choose the Empty Activity option on the Add an Activity to Mobile screen before clicking Next. Also, be sure to uncheck Generate Layout File and Backwards Compatibility. Don't worry about naming the Activity; this is just an app to play around with we will not be returning to it.

Add the graphic to the project

Right-click and select Copy to copy the bob.png graphics file from the download bundle in the Chapter 20/Manipulating Bitmaps/drawable folder.

In Android Studio, locate the app/res/drawable folder in the project explorer window. This next screenshot makes clear where this folder can be located and what it will look like with the bob.png image in it:

Right-click on the drawable folder and select Paste to add the bob.png file to the project. Click OK twice to confirm the default options for importing the file into the...