Device from the Application context context

I am a beginner to programming of Blackberry and I'm trying to understand the different between developing countries in the device against the Application context.

My development so far has just been messing around with the listeners and figureing on their functioning on the eclipse Simulator

My current test project consists of a phonelistener that simply writes to console when a phonelistener event is fired. I think that my project as a module system, where this is not really an app its just something that I want, running in the background. But perhapse I think about evil.

I have my project to "autorun". Now, what are the benefits to my project to extend the Application?

at the moment I just:

 CustomPhoneListener extends AbstractPhoneListener

It works fine and I can see the console outputs when I simulate phone calls. I know that my sample program is very simple, but can someone shed some light on what problems might come with not extending "application"?

Thank you

Stephanie

Device vs. request context has no meaning for me.

Each Application has its own context, says Simon if you use a listener usually perform you in the streamed Application context too.

Re the difference between

CustomPhoneListeners extends the Application Implements PhoneListener
and

CustomPhoneListeners implements PhoneListener
I would ask you to think about this:

CustomPhoneListeners extends String Implements PhoneListener

What is the advantage of the extension of string?  Not really, except in certain circumstances, you need to treat your CustomPhoneListeners as a string!  Same thing with Application, if you want to treat like your own Application, then you might want to code

CustomPhoneListeners extends the Application Implements PhoneListener
Personally, I think that you don't want to have an Application also act as a PhoneListener, this does not seem a useful merger.

About the benefits of creating an Application, it has no value extending the Application If you can work in the listener.  But you can do a treatment long, or perhaps a network call.  Or maybe you are not sure of the reliability of your code.  If you run this in the context of the phone, then if he dies or hangs, it is the phone that is killed.  Not good.  Then you can consider extending the Application, it is started (enterEvent Dispatcher), and then you can pass things for her to run.

Personally, I do as little as possible in the headphones.

Tags: BlackBerry Developers

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