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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
Tools
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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

Exploring the auto-generated code and assets

In the drawable folder, there are some icons, as shown in the following screenshot:

Exploring the auto-generated code and assets

These are the usual icons, but also the ones that appear in the menu of the navigation drawer. We will not take the trouble to change these, but if you want to personalize the icons in your app, it should be plain by the end of this exploration how to do so.

Next, open the res/menu folder. Notice that there is an extra file titled activity_main_drawer.xml. This next code is an excerpt from this file, so we can discuss its contents:

<group android:checkableBehavior="single">
   <item
         android:id="@+id/nav_camera"
         android:icon="@drawable/ic_menu_camera"
         android:title="Import" />
   <item
         android:id="@+id/nav_gallery"
         android:icon="@drawable/ic_menu_gallery"
         android:title="Gallery" />
   <item
         android:id="@+id...
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