The background thread alert does not work

Hello

I have read the article http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800505/800608/... and followed the instructions to display the background thread alert. However, the alert is not displayed and IU locks (freezes). Specifically, the event of click/touch does not work, but the background thread continues to run.

Structure of my program. The main class (with the main function) extends UiApplication. I create in the function main instance of the class that extends the Application. This class starts backgorund wire. I am missing something or making the wrong way?

Sorry I have expired, I was going to write a long response to this.

But in short, remember that your automatic boot process and your user interface process, both through main with different parameters and are the BlackBerry is concerned, different applications.  So it may be an Application, the other can be a UiApplication, and both can enterTheDispatcher.

No two instances of the same Application, they are two different Applications.  They can be of different instances of the same Application class, but it is a special case.  It depends on what you create in the main routine.

You can play a merry dance with such things.  For example, having a UiApplication be started by the automatic boot process, and then the boot gui process can find it and just put in the foreground, rather than creating a new UiApplication.

Generally however people create a request and a UiApplication.  The problem with the use of these different applications, is that things like static are not shared.  Therefore, use something like RuntimeStore to share data.  It is a pain and something that if I can avoid.

It is perfectly possible to have a UiApplication, which starts when the device starts, runs Background Threads that are working in a network and is bought in the foreground by clicking on an icon.  Code is more complicated, but not much.  And you must have complicated the code when you run the network Threads background to deal with the unit off power and then power anyway.

Hope that clarifies somethings.

Tags: BlackBerry Developers

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