Tree uses an XMLListCollection object as the data source: : Tree Data « Components « Flex






Tree uses an XMLListCollection object as the data source:

Tree uses an XMLListCollection object as the data source:
      
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<!-- dpcontrols\UseXMLDP.mxml -->
<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"
    width="650">
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <fx:Declarations>
        <fx:XML id="capitals">
            <root>
                <Capitals label="U.S. State Capitals">
                    <capital label="AL" value="Montgomery" />
                    <capital label="AK" value="Juneau" />
                    <capital label="AR" value="Little Rock" />
                    <capital label="AZ" value="Phoenix" />
                </Capitals>
                <Capitals label="Canadian Province Capitals">
                    <capital label="AB" value="Edmonton" />
                    <capital label="BC" value="Victoria" />
                    <capital label="MB" value="Winnipeg" />
                    <capital label="NB" value="Fredericton" />
                </Capitals>
            </root>
        </fx:XML>
        <!--
            Create an XMLListCollection representing the Tree nodes.
            capitals.Capitals is an XMLList with both Capitals elements.
        -->
        <mx:XMLListCollection id="capitalColl" source="{capitals.Capitals}" />
    </fx:Declarations>
    <s:Label
        text="These two Tree controls appear identical, although their data sources are different." />
    <s:HGroup>
        <!--
            When you use an XML-based data provider with a tree you must specify
            the label field, even if it is "label". The XML object includes the
            root, so you must set showRoot="false". Remember that the Tree will
            not, by default, reflect dynamic changes to the XML object.
        -->
        <mx:Tree id="Tree1" dataProvider="{capitals}" labelField="@label"
            showRoot="false" width="300" />
        <!-- The XMLListCollection does not include the XML root. -->
        <mx:Tree id="Tree2" dataProvider="{capitalColl}" labelField="@label"
            width="300" />
    </s:HGroup>
</s:Application>

   
    
    
    
    
    
  








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