[FLEX-24159] The dropdown in the ComboBox controll does not get updated when the dataprovider gets assinged a new collection (e.g. an ArrayCollection)

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 3.5 (Release)
• Fix Version/s: Apache Flex 4.11.0
• Component/s: mx: ComboBox
• Environment: Affected OS(s): Windows; Browser: Internet Explorer 7.x; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 08/Jun/10 02:03
• Updated: 13/Sep/13 00:38
• Resolved: 13/Sep/13 00:38

Description

Steps to reproduce:
1. Create a mx:ComboBox on a panel and bind a data provider to it
...
[Bindable] public var comboBoxDataArray:ArrayCollection = null;
...
<mx:ComboBox labelField="name" dataProvider="

{comboBoxDataArray}

" width="130"></mx:ComboBox>

2. Create 2 ArrayCollection-s of id, name pairs
...
var peopleArray:ArrayCollection = new ArrayCollection(
[

{id:"1", name:"Bob"}

,

{id:"2", name:"Fred"}

,

{id:"3", name:"Petey"}

]);
...
...
var animalArray:ArrayCollection = new ArrayCollection(
[

{id:"4", name:"Dog"}

,

{id:"5", name:"Cat"}

,

{id:"6", name:"Bird"}

,

{id:"7", name:"Fish"}

]);
...

3. First assign one ArrayCollection at runtime and then assign the second ArrayCollection, also at runtime. You can trigger this with a button and you can swap back and forth if you want...

Actual Results: Using Flex SDK 3.5.0 the content of the dropdown (the list) is not updated correctly after swapping/assigning between the two array collections.

Expected Results: In Flex SDK 3.2.0 and 3.3.0 it works correctly and the dropdown is updated.

Workaround (if any): Downgrade the SDK to a previous version (have not tried this in 3.4.0)