Question

This is my second day using FLEX and AS 3.0 so I am very new at this. I am trying to obtain the value of the selected item in a tree component, in this case it is just a name. Below is the tree I have created. The tree contents have been populated programmatically with an array called “cat”. The tree gets populated just fine but I can’t figure out how to get the name of the currently selected item.

<mx:Tree id="category_tree" x="10" y="80" width="160" height="169" showRoot="true" dataProvider="{cat}" labelField="name">

I have used the selectedItem.toString() function but this only seems to return the type of object and not the value. Currently it returns “object Object”
In my script I have…

category_tree.selectedItem.toString();

Any help on this would be greatly appreciated. Thank you in advance for your time.

Answer 1

You can add a change event to the tree and have use a callback similar to:

 private function changeEvt(event:Event):void {
        var lableData:*;
        var label:String;

        if (event.currentTarget.selectedItem.@data) {
           labelData = event.currentTarget.selectedItem.@data;
        }

        label = event.currentTarget.selectedItem.@label; 
     }
 }

or access the value directly

category_tree.selectedItem.@label;