BBM itemAdded warning twice

I coded to display the entries of BBM profile box and to add and remove entries using c ++ and cascades qml.

My program maintained suspended after I asked an article be added or removed from the box. Followed the program to debug, I found that the address of my page and option cointrols has been reset. Thought, it might have to do with async communications therefore reworked so I uesed my home sognals and slots, although didn't know I needed. The same problem. Then in my routine to update the page I simply said if the address of the page is output just 0. Thought that at least I wouldn't hang even if she did not.

Well, to my was, program worked perfectly - almost instantly update page.

So I go back with new.

1 load the content of the Page

2. added element application

3. receive itemAdded signal - memory already 0s but only to do with the page and its controls, the rest OK object properties.

4 load Page routine returns becuse of addresses 0

5 itemAdded received - signal memory is ok

6 load Page content - systematic is captured and updated page

7 app page is ready to intervene

Two itemRemoved signals are received when the item is deleted,

When there are already 3 items I receive from two itemAdded and itemRemoved a.

The two things that I did not undersatnd are 1) why are two signals and 2) why and how memory can be set to zero for the page and its controls, and only for these properties.

It has occurred to me that it might be another instance of my object with a page not initialized, each instance receiveing a signal, but do not know how this could happen.

Someone at - it a similar experience or know how I can know if I somehow created several instances of the object.

Mark,

Just testing my dose. I was using breakpoints which is how I knew the duplicate signals. It took a few tries to step into my program until I found the right sequence. And, just as it happened one day. My object is attached to the page, so she calls the constructor and then my program also called the manufacturer and completed initialization.

I have tried different approaches and the one that worked was let constructor call page, find the object on the page and then c ++ by completing the establishment, saving address object... before displaying the page.

Tags: BlackBerry Developers

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