Book Image

BlackBerry Java Application Development

Book Image

BlackBerry Java Application Development

Overview of this book

BlackBerry Smartphone was once the domain of jet-setting business users with power suits. Now you can hardly go anywhere without seeing someone using a BlackBerry to check their messages or make a call. It's this kind of explosive growth that makes the BlackBerry ecosystem a great place to develop and market applications through the BlackBerry App World store—this book shows you how to do just that! This step-by-step guide gives you a hands-on experience of developing innovative Java applications for your BlackBerry. With the help of this book, you will learn to build your own applications to illustrate the platform, and the various capabilities that developers can use in their programs. It explores the powers of Blackberry and helps you develop professional and impressive Java applications. The book teaches how to write rich, interactive, and smart BlackBerry applications in Java. It expects the readers to know Java but not Java Mobile or the BlackBerry APIs. We will learn to build rich, interactive, and smart Java applications for the BlackBerry. The book will cover UI programming, data storage, programming network, and internet API apps. As we move on, we will learn more about the BlackBerry's device features, such as messaging, GPS, multimedia, contacts and calendar, and so on.This book also helps you build your own applications to illustrate the platform, and the various capabilities that developers can use in their programs.
Table of Contents (18 chapters)
BlackBerry Java Application Development
Credits
About the Author
Acknowledgement
About the Reviewers
Preface

Time for action - creating a LabelField


Creating a LabelField is just as simple as creating a SeparatorField except that the label text is also needed. So, add the following code to the createFields method and run the application to see the label.

add(new LabelField("Label Field"));
// A separator field between each type of control
add(new SeparatorField());

What just happened?

At this point, we can see the LabelField that we just added on the screen under the SeparatorField that we saw last time and followed by another SeparatorField. Each time we add a new field to the screen we will continue to follow this pattern so that each field is separated out, making it easier to see each field as we add them. Also, notice that we still can't scroll the cursor around because none of the fields on the screen can receive focus.