[
https://issues.apache.org/jira/browse/FLEX-27575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mark Kessler resolved FLEX-27575.
---------------------------------
Resolution: Not A Problem
Using test app below, problem does not appear to exist with the SDK 4.10.
<?xml version="1.0" encoding="utf-8"?>
<!---
Test application
-->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009";
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" >
<fx:Script>
<![CDATA[
import spark.events.IndexChangeEvent;
protected function handleIndexChange(event:IndexChangeEvent):void
{
dataProvider.refresh();
}
]]>
</fx:Script>
<fx:Declarations>
<s:ArrayCollection id="dataProvider">
<fx:Number>1</fx:Number>
<fx:Number>2</fx:Number>
<fx:Number>3</fx:Number>
</s:ArrayCollection>
</fx:Declarations>
<s:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"
gap="0" />
</s:layout>
<s:Group width="500" height="500" horizontalCenter="0" verticalCenter="0">
<s:DropDownList dataProvider="{dataProvider}" selectedIndex="0"
change="handleIndexChange(event)" />
</s:Group>
</s:Application>
> Cannot refresh DataProvider for Spark DropDownList
> --------------------------------------------------
>
> Key: FLEX-27575
> URL: https://issues.apache.org/jira/browse/FLEX-27575
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: DropDownList
> Affects Versions: Adobe Flex SDK 4.5 (Release)
> Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Language Found: English
> Reporter: Adobe JIRA
> Assignee: Mark Kessler
> Labels: easytest
>
> Steps to reproduce:
> 1. Use the following test Application
> <?xml version="1.0" encoding="utf-8"?>
> <s:Application
> xmlns:fx="http://ns.adobe.com/mxml/2009";
> xmlns:s="library://ns.adobe.com/flex/spark">
>
> <fx:Declarations>
> <s:ArrayCollection id="dataProvider">
> <fx:Number>1</fx:Number>
> <fx:Number>2</fx:Number>
> <fx:Number>3</fx:Number>
> </s:ArrayCollection>
> </fx:Declarations>
>
> <fx:Script>
> <![CDATA[
> import spark.events.IndexChangeEvent;
>
>
> private function handleIndexChange(event:
> IndexChangeEvent): void {
> dataProvider.refresh();
> }
>
> ]]
> >
> </fx:Script>
>
> <s:Group width="500" height="500" horizontalCenter="0"
> verticalCenter="0">
> <s:DropDownList
> dataProvider="{dataProvider}" selectedIndex="0"
> change="handleIndexChange(event)"
> />
> </s:Group>
> </s:Application>
> 2. Select value from DropDownList
>
> Actual Results:
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> at
> Function/<anonymous>()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components\List.as:1398]
>
> Expected Results:
> -
>
> Workaround (if any):
> -
> Notes:
> List.dataProviderRefreshed() creates functions which in their turn use
> optional "dataGroup" skin part. SkinPart is already removed by the time
> aforementioned function executes.
>
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