Custom Item Renderer Issue for List

Question

Hi,
I have a List that uses a custom renderer that contains a
combo box and a checkbox.
If i define the data provider inline in MXML both the
combobox and the checkbox render values correctly.
However, if I switch the dataprovider to an AS 3.0
ArrayCollection using same name/value pairs, the checkbox renders
properly but the combo box doesn't show text values. What is weird
is that if I trace the data, the value is accessible but it won't
show in combo.text of control.
Any ideas?

Answer 1

The creationComplete event is called ONCE and that's it. But
each time an itemRenderer is recycled it will have its data
property reset with new a new record from the dataProvider. Thus
overriding the set data function lets you inspect the data and do
what you want with it.
Data binding in MXML <mx:Image source="{data.image}" />
is set up by the Flex compiler. When the data property is reset it
will trigger the data binding notifications. The Flex
compiler-generated code will intercept that and update the Image
source property.
If you use MXML, then use data binding. If you write your
itemRenderer in ActionScript, override the set data
function.