Create BlackBerry applications with open source tools, Part 3: Building a social-networking application

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Next steps

Before wrapping up, here are a few additional notes.

Application signing

Some of the programming interfaces used in the sample application require that the application be signed in order for it to run on a real BlackBerry device. For more information on how to sign an application, please see Part 1 of this series.

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Error handling

Error handling is omitted from this tutorial for the sake of brevity and clarity. Of course, any production-ready code should have a healthy dose of error handling and instructions for the user in the event that something goes awry.

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Multiple recipients

The sample application lets you share your event with only one friend. As a straightforward enhancement, you could add multiple recipients to the e-mail invitation by repeatedly calling the contactList.choose() method until a null response is returned. For each valid contact received from the choose method invocation, add the contact to a vector. Then, for each contact entry, add an individual address, which is then added to the message. Presto! Multiple invites for one event.

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