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  • Book Overview & Buying BlackBerry Java Application Development
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BlackBerry Java Application Development

BlackBerry Java Application Development

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BlackBerry Java Application Development

BlackBerry Java Application Development

4 (1)
Buy this Book

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)
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BlackBerry Java Application Development
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BlackBerry Java Application Development
Credits
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Credits
About the Author
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About the Author
Acknowledgement
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Acknowledgement
About the Reviewers
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About the Reviewers
Preface
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Preface
Lock Free Chapter
1
Introducing BlackBerry Application Development
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Introducing BlackBerry Application Development
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Expectations of this book
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General device capabilities
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Two different approaches to application development
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Choosing an SDK version
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What you can expect
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Summary
2
Installing the Development Environment
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Installing the Development Environment
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System requirements
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Development Environments
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Time for action - downloading the Java Development Kit
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Time for action - installing the Java Development Kit (JDK)
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Introducing the BlackBerry Developer Zone
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Time for action - downloading Eclipse with the JDE plugin
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Time for action - installing the JDE plugin for Eclipse Full installer
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Time for action - installing other JDE component packages over-the-air
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Summary
3
Getting Familiar with the Development Environment
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Getting Familiar with the Development Environment
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Starting the Eclipse IDE
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Time for action - launching Eclipse for the first time
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Importing the hello world project
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Time for action - importing the HelloWorldDemo sample application
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Running the application
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Time for action - running an application in the simulator
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Debugging the application
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Time for action - starting the debugger
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Introducing Eclipse perspectives
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Time for action - changing the perspective
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Time for action - displaying the Help
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Summary
4
Creating your First BlackBerry Project
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Creating your First BlackBerry Project
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Choosing the SDK version
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Time for action - creating a new project
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Time for action - creating a new project
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Start at the beginning
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Time for action - adding the UiApplication class
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Time for action - expanding TipCalcApplication
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Time for action - adding a MainScreen
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Time for action - expanding the TIpCalcMainScreen
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Time for action - adding more to the MainScreen
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Time for action - adding a menu to the MainScreen
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Time for action - selecting the right component package
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Time for action - running your new application
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Giving TipCalc some polish
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Time for action - adding an icon
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Time for action - changing the application title
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Time for action - fixing the bill amount field
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Time for action - disabling the "save" dialog
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Summary
5
Learning the Basics About the UI
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Learning the Basics About the UI
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Getting to know other Field classes
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SeparatorField
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Time for action - creating a SeparatorField
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LabelField
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Time for action - creating a LabelField
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BitmapField
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Time for action - creating a BitmapField
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ChoiceField
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Time for action - creating an ObjectChoiceField
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Time for action - creating a NumericChoiceField
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GaugeField
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Time for action - creating a GaugeField
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DateField
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Time for action - creating a DateField
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CheckboxField
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Time for action - creating a CheckboxField
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RadioButtonField
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Time for action - creating a RadioButtonField
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TextField
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Time for action - creating a BasicEditField
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Time for action - creating an EditField
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Time for action - creating a PasswordEditField
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Time for action - creating an EmailAddressField
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Time for action - creating an AutoTextEditField
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Time for action - creating an ActiveAutoTextEditField
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Time for action - creating a RichTextField
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Time for action - creating an ActiveRichTextField
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Summary
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Going Deeper into the UI
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Going Deeper into the UI
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ButtonField
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Time for action - creating a ButtonField
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Time for action - creating a ListField
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TreeField
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Time for action - creating a TreeField
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MapField
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Time for action - creating a MapField
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Displaying another screen
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Time for action - creating an "About Screen"
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Displaying a dialog
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Time for action - collecting information with a common dialog
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Time for action - collecting information with custom buttons on a dialog
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Time for action - collecting information with a list on a dialog
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Listeners and callbacks
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Layout managers
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Summary
7
Storing Data
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Storing Data
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Laying the ground work
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Creating a data class
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The Java way: RMS
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Time for action - creating and opening a RecordStore
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Time for action - adding a record
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Time for action - retrieving records
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Time for action - deleting records
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The BlackBerry way: Persistent Store
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PersistentStore and PersistentObject
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Time for action - preparing the JournalEntry class
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Time for action - getting a PersistentObject
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Time for action - accessing the PersistentObject data
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Time for action - accessing the PersistentObject data
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Accessing removable storage
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Time for action - storing data to a file
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Time for action - reading data from a file
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Summary
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Interfacing with Applications
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Interfacing with Applications
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Introducing PIM
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Laying the ground work
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Time for action - creating test contacts
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Expanding your test contacts
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Time for action - adding telephone numbers
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Expanding even more
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Time for action - adding e-mail addresses
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Finishing the test contacts
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Time for action - adding e-mail addresses
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Embedding the address book into your application
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Time for action - embedding the address book
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Adding the event to your calendar
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Time for action - adding an event to the calendar
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Recurring events
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Sending e-mail
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Time for action - sending an e-mail from an application
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Summary
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Networking
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Networking
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Threading
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Connector class
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HTTP basics
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Time for action - ‑ HTTP Basics
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Time for action - calling a web service
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Time for action - parsing the response
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The transport—so many possibilities
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Debugging with the MDS simulator
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Testing for availability of transports
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Time for action - testing for availability
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Moving beyond HTTP connections
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Summary
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Advanced Topics
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Advanced Topics
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Introducing the Global Positioning System
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Time for action - acquiring a location
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Time for action - expanding Hansel
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Alternate entry points
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Time for action - creating an alternate entry point project
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Time for action - adding a focus icon to Hansel
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Summary
11
Wrapping It All Up
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Wrapping It All Up
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Using resources for localization
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Time for action - adding a resource file
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Resource bundles
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Time for action - adding a second resource file
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Time for action - populating a resource file and configuring the project
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Time for action - using a resource in your code
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Code signing your application
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Time for action - configuring projects to allow access
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Time for action - installing the code-signing keys
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Time for action - code-signing the application
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Distributing your application through BlackBerry App World
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Summary
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Pop Quiz Answers
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Pop Quiz Answers
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Chapter 2
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Chapter 3
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Chapter 4
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Chapter 5
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Chapter 6
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Chapter 7
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Chapter 8
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Chapter 9
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Chapter 10
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Chapter 11

PersistentStore and PersistentObject

The PersistentStore and PersistentObject classes work hand-in-hand to get access to data in the PersistentStore. All of the methods in the PersistentStore class are static, which means that you won't ever create an instance of the PersistentStore class. Instead, the PersistentStore class primarily exists so that you can get a PersistentObject, which in turn allows you to get your data.

A PersistentObject represents the object being stored in the PersistentStore. It is a wrapper class that handles the serialization and storage of the data for you. As a wrapper it is possible for a PersistentObject to actually reference no object or to have a null value. This is the case when a new PersistentObject is created.

You can store as many instances of PersistentObject in the PersistentStore as you want, limited by device memory of course. Each object in the PersistentStore must be given a unique key value by you and this key value is used to reference the object...

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