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)

Linking back to the main menu

Finally, for this layout, we will add a button that links back to the menu, as follows:

  1. Add another TableRow via the Component Tree.
  2. Drag a button onto the new TableRow.
  3. Edit its layout_column attribute to 1 so that it is in the middle of the row.
  4. Edit its text attribute to Menu and edit its onClick attribute to match our already existing loadMenuLayout method.

You can now run the app and switch back and forth between the different layouts.

If you want to, you can add some meaningful titles and data to the table by editing all the text attributes of the TextView, as I have done in the following screenshot, which shows the TableLayout running in the emulator:

Figure 4.35 – Adding some significant titles and data to the table by editing all the text attributes of the TextView

Note

The author admits that the preceding data might be considered overly optimistic.

As a final thought, think...