[FLEX-34647] DataGrid columns Can't initialize by ActionScript

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Apache Flex 4.12.0, Apache Flex 4.13.0
• Component/s: Spark: DataGrid
• Environment: win8 ,flashBuilder4.7 ,Apache Flex SDK4.13, Adobe Air
• Assignee: Unassigned
• Reporter: moketing
• Created: 26/Nov/14 09:57
• Updated: 26/Nov/14 10:05
• Resolved: 26/Nov/14 10:05

Description

DataGrid columns Can't initialize from actionscript,but mxml work fine!
code below do not show the columns been add!
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationComplete="_creationCompleteHandler(event)">
<fx:Script>
<![CDATA[
import mx.collections.ArrayList;
import mx.events.FlexEvent;

import spark.components.gridClasses.GridColumn;

protected function _creationCompleteHandler(event:FlexEvent):void
{
var cols:ArrayList = new ArrayList();
for(var i:int=0;i<6;i++)

{ var col:GridColumn = new GridColumn(); col.dataField="value"; col.headerText="Column"+i; cols.addItem(col); }

dataGrid.columns = cols;
}

]]>
</fx:Script>
<fx:Declarations>
</fx:Declarations>

<fx:Declarations>
</fx:Declarations>
<s:DataGrid id="dataGrid" verticalCenter="0" horizontalCenter="0" requestedRowCount="4" requireSelection="true"/>
</s:WindowedApplication>