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Android Programming with Kotlin for Beginners

You're reading from   Android Programming with Kotlin for Beginners Build Android apps starting from zero programming experience with the new Kotlin programming language

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Product type Paperback
Published in Apr 2019
Publisher Packt
ISBN-13 9781789615401
Length 698 pages
Edition 1st Edition
Languages
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Author (1):
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John Horton John Horton
Author Profile Icon John Horton
John Horton
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Table of Contents (31) Chapters Close

Preface 1. Getting Started with Android and Kotlin FREE CHAPTER 2. Kotlin, XML, and the UI Designer 3. Exploring Android Studio and the Project Structure 4. Getting Started with Layouts and Material Design 5. Beautiful Layouts with CardView and ScrollView 6. The Android Lifecycle 7. Kotlin Variables, Operators, and Expressions 8. Kotlin Decisions and Loops 9. Kotlin Functions 10. Object-Oriented Programming 11. Inheritance in Kotlin 12. Connecting Our Kotlin to the UI and Nullability 13. Bringing Android Widgets to Life 14. Android Dialog Windows 15. Handling Data and Generating Random Numbers 16. Adapters and Recyclers 17. Data Persistence and Sharing 18. Localization 19. Animations and Interpolations 20. Drawing Graphics 21. Threads and Starting the Live Drawing App 22. Particle Systems and Handling Screen Touches 23. Android Sound Effects and the Spinner Widget 24. Design Patterns, Multiple Layouts, and Fragments 25. Advanced UI with Paging and Swiping 26. Advanced UI with Navigation Drawer and Fragment 27. Android Databases 28. A Quick Chat Before You Go A. Other Book You May Enjoy Index

The Bitmap manipulation demo app

Now that we have studied the theory, let's draw and spin some bitmaps. First, create a new project and call it Bitmap manipulation. Choose the Empty Activity option with all the other settings as they have been throughout the book.

Adding the Bob graphic to the project

Right-click and select Copy to copy the bob.png graphics file from the download bundle in the Chapter20/Bitmap Manipulation/drawable folder. Bob, represented by bob.png, is a simple, static video game character.

In Android Studio, locate the app/res/drawable folder in the project explorer window and paste the bob.png image file into it. The following screenshot makes it clear where this folder is located and what it will look like with the bob.png image in it:

Adding the Bob graphic to the project

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

In this app, we will make the same change that we did...

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