By Chris King
With complex BlackBerry 6 improvement, you will get a accomplished examine the hot gains incorporated with SDK 6, together with the internet and widgets SDK, the net browser, and extra. you are going to additionally tips on how to make the most of BlackBerry media features resembling the digicam and video playback. The e-book additionally indicates you the way to ship and obtain textual content and multimedia messages, use robust cryptography libraries, and fasten with the user's own and company contacts and calendar.
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Extra info for Advanced BlackBerry 6 Development, 2nd Edition
The Player generally advances forward, but in certain cases it can return to an earlier state, as shown in Figure 2–2. The following list shows details on each state: UNREALIZED: This indicates that you have requested the media operation, nothing more. In a sense, it “isn’t real” yet. REALIZED: Once a Player enters the REALIZED state, it knows what it has to do in order to complete the operation. Depending on the request type, it may need to communicate with the filesystem, check capabilities, or perform other initial setup.
You’ll see that you can observe all the data that comes down from the network connection. If a problem occurs, you can view the thrown exception and determine how to solve it. Launch the app again, noting the different path it takes the second time. Once you feel comfortable in the debugger view, you can move on to the actual device. Debugging on the BlackBerry Device 1. To debug on the BlackBerry, you first must load the application. The simplest way to do this is via the following steps: Stop any already running debug sessions.
READ indicates that your app will only read data from this resource. WRITE indicates that your app will only write data to this resource. READ_WRITE allows your app to both read from and write to this resource. By default, connections will open with READ_WRITE access. You generally want this mode, particularly since bugs in some early versions of BlackBerry device software cause read operations to fail if a connection is opened with only READ access. Even when you request these access levels, users still may choose to override your selection.
Advanced BlackBerry 6 Development, 2nd Edition by Chris King