[flexcoders] Problem using ArrayCollection source as XML

Mon, 26 Jun 2006 06:23:32 -0700

Hi,

Can anyone please help me with ArrayCollection ?

I am trying to set an XML result from the server as a source to the
ArrayCollection and use it to dynamically generate ComboBoxes, if the
XML result contains repeating tags, it works, otherwise, the
ArrayCollection does not seem to set itself to the source and I
cannot access any property like the "Length" etc., Here is the actionscript and XML extract :

Note that if there are multiple <categoryHierarchy> tags in my xml, it works fine.

ActionScript:

var acCategoryHierarchy:ArrayCollection = new ArrayCollection();
     acCategoryHierarchy.source = result.row.categoryHierarchy;

     // Get all hierarchy names
returned by the server and form Label & Combo boxes
     for (var i:int = 0; i <  acCategoryHierarchy.length ; i++)  {
      
                  var cbCategoryLevel1:ComboBox = new ComboBox();
                 
                  cbCategoryLevel1.x=10;
                  cbCategoryLevel1.width=200;
                  cbCategoryLevel1.dataProvider =  acCategoryHierarchy.getItemAt(i).categoryHierarchyLevel1;
                  cbCategoryLevel1.labelField = "categoryHierarchyLevelName";
                  cbCategoryLevel1.addEventListener(flash.events.Event.CHANGE,hierarchyComboChange);
                 
                   var  lblCategoryHierarchy:Label = new Label();
     
                 lblCategoryHierarchy.text = String(acCategoryHierarchy.getItemAt(i).categoryHierarchyName);

                  assignCategoryForm.addChild(lblCategoryHierarchy);
                  assignCategoryForm.addChild(cbCategoryLevel1);


XML :

<row>
  <categoryHierarchy>
   <categoryHierarchyID> 1 </categoryHierarchyID>
   <categoryHierarchyName> Chicken </categoryHierarchyName>
   <categoryHierarchyLevel1> 

    <categoryHierarchyLevelID>1 </categoryHierarchyLevelID>
   
 <categoryHierarchyLevelName>Leg</categoryHierarchyLevelName>
   </categoryHierarchyLevel1>       
      <categoryHierarchyLevel1>
    <categoryHierarchyLevelID>2 </categoryHierarchyLevelID>
   
 <categoryHierarchyLevelName>Thigh</categoryHierarchyLevelName>
 
   </categoryHierarchyLevel1>   
   <categoryHierarchyLevel1>
    <categoryHierarchyLevelID>3 </categoryHierarchyLevelID>
   
 <categoryHierarchyLevelName>Breast</categoryHierarchyLevelName>
   </categoryHierarchyLevel1>  </categoryHierarchy>

 </row>

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