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)

Laying out data with TableLayout

Now, we will build a layout that resembles a spreadsheet. It will have neatly aligned cells with titles and data. In a real-world app, you would most likely use real live data from the user. As we are just practicing with different layouts, we will not go to this extent.

Follow these steps:

  1. In the project window, expand the res folder. Now, right-click the layout folder and select New. Notice that there is an option for Layout resource file.
  2. Select Layout resource file, and you will see the New Resource File dialog window.
  3. In the File name: field, enter my_table_layout. This is the same name we used in the call to setContentView within the loadTableLayout method.
  4. Notice in the Root element: field that it has selected by default …ConstraintLayout as the option. Delete …ConstraintLayout and type TableLayout.
  5. Click the OK button, and Android Studio will generate a new TableLayout in an XML file called my_table_layout...