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)

Building a UI with CardView and ScrollView

Create a new project in the usual way and choose the Empty Activity project template. Name the project CardView Layout.

We will design our CardView masterpiece inside a ScrollView layout, which, as the name suggests, allows the user to scroll through the contents of the layout.

Expand the folders in the project explorer window so you can see the res folder. Expand the res folder to see the layout folder.

Right-click the layout folder and select New. Notice there is an option for Layout resource file. Select Layout resource file and you will see the New Resource File dialog window.

In the File name field, enter main_layout. The name is arbitrary, but this layout is going to be our main layout, so the name makes that plain.

Notice it is set to …ConstraintLayout in the Root element field. Change it to ScrollView. This layout type appears to work just like LinearLayout; the difference is that when there is too much content...