By Chris King
With complicated BlackBerry 6 improvement, you will get a finished examine the recent beneficial properties incorporated with SDK 6, together with the internet and widgets SDK, the net browser, and extra. you are going to additionally how you can reap the benefits of BlackBerry media functions corresponding to the digicam and video playback. The e-book additionally indicates you ways to ship and obtain textual content and multimedia messages, use robust cryptography libraries, and attach with the user's own and enterprise contacts and calendar.
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Additional info for Advanced BlackBerry 6 Development, 2nd Edition
Although you have successfully obtained a FileConnection object, opening the stream may still fail. The device generally does not check security until you attempt to access the file. The file itself also might not exist yet, or another app might hold a lock on it. Be prepared to handle SecurityException, IllegalModeException, and IOException. Once you have an appropriate stream, you can read or write to it as you would in a standard Java application. Operations on streams are synchronous and blocking.
However, if you want to run on a variety of device types and carriers, you’ll need to more carefully think about how to support those differences. info 35 36 CHAPTER 1: Getting Started appropriate settings for them; or, you can create separate versions of the app for each configuration and let users choose which one to install. Chapter 10 addresses this choice in more detail. Eclipse makes it convenient to deploy your app, but it can get a little tedious if you frequently make changes to test on the device.
Figure 2–4. A picture-taking app Capturing an image still requires obtaining a Player, but as the following pseudocode shows, the rest of the process differs from audio capture. info 53 54 CHAPTER 2: Media Capture Several things are worth noting here. initDisplayMode() can take one of two arguments. USE_GUI_PRIMITIVE returns a UI element that you can place into your screen. Field” as the second parameter to retrieve a Field. Item” to retrieve an Item that you can insert into your Form. GameCanvas”.
Advanced BlackBerry 6 Development, 2nd Edition by Chris King