Box problems

I have problems to call the function c ++ for the
OnCheckedchanged {}
Whenever I call a function,
Example: _app.sum (...)
the console says: could not find the application variable

But I am able to use the same function in buttons with {onClicked}
Sum function is defined as ApplicationUI::sum (QString) voi...

Oh! Lol, I just responded to someone on WhatsApp who asked the exact same question, I would copy and paste of my response.

You should treat your listItem, as if she lives in a different world and all they know is their parent (ListView). So, if you want to use the Q_PROPERTY foo in bar class that you have setContextProperty() with the name _bar, you can't use _bar.foo
Instead, create a property in your ListView that point to it, like this:
property variant foo: _bar.foo

And in your listItem, use this:
Title: mainItemName.ListItem.view.foo

(mainItemName is the ID that you will give to your content in your ListItemComponent, it's usually a StandardListItem or a container)

You can see an example in this code:
https://github.com/RodgerLeblanc/tutorial/BLOB/master/assets/tutorial/TutorialSheet.QML

Tags: BlackBerry Developers

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