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  • Setting icons for specific nodes in a Flex Tree control

    The following example shows you how you can override a specific node’s icon in a Flex Tree control ysing the Tree class’s setItemIcon() method.
    <?xml version="1.0" encoding="utf-8"?>
    <!-- http://blog.flexexamples.com/2007/11/29/setting-icons-for-specific-nodes-in-a-flex-tree-control/ -->
    <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
            layout
    ="horizontal"
            verticalAlign
    ="middle"
            backgroundColor
    ="white"
            creationComplete
    ="init();">

        
    <mx:Script>
            
    <![CDATA[
                [Embed("assets/folder_table.png")]
                private var FolderTableIcon:Class;

                [Embed("assets/folder_user.png")]
                private var FolderUserIcon:Class;

                [Embed("assets/folder_wrench.png")]
                private var FolderWrenchIcon:Class;

                private function init():void {
                    var nodeOne:XML = xmlListColl.getItemAt(0) as XML;
                    tree.setItemIcon(nodeOne, FolderTableIcon, FolderTableIcon);

                    var nodeTwo:XML = xmlListColl.getItemAt(1) as XML;
                    tree.setItemIcon(nodeTwo, FolderUserIcon, FolderUserIcon);

                    var nodeThree:XML = xmlListColl.getItemAt(2) as XML;
                    tree.setItemIcon(nodeThree, FolderWrenchIcon, FolderWrenchIcon);
                }
            
    ]]>
        
    </mx:Script>

        
    <mx:XMLListCollection id="xmlListColl">
            
    <mx:source>
                
    <mx:XMLList>
                    
    <node label="One">
                        
    <node label="One.1">
                            
    <node label="One.1.1">
                                
    <node label="One.1.1.1">
                                    
    <node label="One.1.1.1.1" />
                                
    </node>
                            
    </node>
                        
    </node>
                        
    <node label="One.2" />
                        
    <node label="One.3" />
                    
    </node>
                    
    <node label="Two">
                        
    <node label="Two.1" />
                        
    <node label="Two.2" />
                        
    <node label="Two.3" />
                    
    </node>
                    
    <node label="Three" />
                
    </mx:XMLList>
            
    </mx:source>
        
    </mx:XMLListCollection>

        
    <mx:Tree id="tree"
                dataProvider
    ="{xmlListColl}"
                labelField
    ="@label"
                width
    ="250"
                rowCount
    ="6"
                showScrollTips
    ="true" />

    </mx:Application>

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  • 原文地址:https://www.cnblogs.com/taobataoma/p/1034824.html
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