Couldn't you put the list component in a movieclip and add attach the
movieclip to the scrollPane (which is a lot easier).
Also, what is your 'createUniqueInstanceName()' function ?
Matt Bennett wrote:
Hello Flashcoders,
I'm building a scrollable list, and I keep track of the list items
with a Collection. I'm having trouble adding items to it - I think I'm
overwriting some instance variables somewhere.
In the code below, listContainer is a reference to the contents of a
ScrollPane component:
var listContainer = scrollPane.content;
Here's my function to add a list item:
function addListItem(symbolName, props)
{
// Create the content (instance name: _itemX)
var instanceName = this.createUniqueInstanceName();
var item = listContainer.createClassObject(symbolName,
instanceName,
this.getNextHighestDepth(), props);
//add to list items
listItems.addItem(item);
trace("////////////////////////////////////////////");
trace("debugging addItem");
var iterator = listItems.getIterator();
while(iterator.hasNext()) {
var thisitem = iterator.next();
trace("this item: "+thisitem+"; type:
"+thisitem.className);
}
trace("////////////////////////////////////////////");
return item;
}
After adding 3 items, the debug trace looks like this:
////////////////////////////////////////////
debugging addItem
this item: ; type: undefined
this item: ; type: undefined
this item: _level0.QUESTION
PAD.contentWidget.questionList.scrollPane.spContentHolder._item2;
type: View
////////////////////////////////////////////
I assumed that I was overwriting an instance name somewhere, but I
also traced the contents of listContainer with a for-in loop. This is
the output after the first item is added:
////////////////////////////////////////////
this item: 2441; type: undefined; text: undefined
...other irrelevant stuff
this item: true; type: undefined; text: undefined
this item: _level0.QUESTION
PAD.contentWidget.questionList.scrollPane.spContentHolder._item0;
type: View; text: question 1
////////////////////////////////////////////
And this the output after the second item is added:
////////////////////////////////////////////
this item: 2441; type: undefined; text: undefined
...other irrelevant stuff
this item: true; type: undefined; text: undefined
this item: _level0.QUESTION
PAD.contentWidget.questionList.scrollPane.spContentHolder._item1;
type: View; text: question 2
////////////////////////////////////////////
So it looks to me like I'm actually overwriting each _itemX instance
on listContainer - and hence the references in the Collection become
null pointers.
Does anyone have any experience with this?
Many thanks,
Matt.
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