Flex 4.6 XML搜索、匹配示例

效果见图

初始化界面

输入“设置”，进行搜索、匹配后界面

下面是代码 <?xml version="1.0" encoding="utf-8"?> <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" minWidth="955" minHeight="600" creationComplete="init(event)"> <fx:Script> <![CDATA[ import mx.events.FlexEvent; import mx.utils.StringUtil; import spark.events.TextOperationEvent;

        public var rawList:XML = 
            <apps name="应用程序" >
              <item name="关于"
                    icon="plugins/about_002/assets/icons/about_48.png" 
                    iconSmall="plugins/about_002/assets/icons/about_24.png" 
                    moduleUrl="plugins/about_002/Ahout_002.swf"
                    version="1.0"  date="2013-5-13"  author="way" type="plugin"
                    description="关于能源管理中心的一个说明" />

             <item name="程序管理" 
                    icon="plugins/appManager_001/assets/icons/apps_48.png" 
                    iconSmall="plugins/appManager_001/assets/icons/apps_24.png"
                    moduleUrl="plugins/appManager_001/AppManager_001.swf"
                    version="1.0"  date="2013-3-5"  author="way" type="plugin"  resizable="false"
                    description="对系统应用，及用户自定义应用进行管理"
                    shortCutCreated="true"/>

              <item name="导航设置" 
                    icon="plugins/navigatorSetting_001/assets/icons/gears_48.png" 
                    iconSmall="plugins/navigatorSetting_001/assets/icons/gears_24.png" 
                    moduleUrl="plugins/navigatorSetting_001/NavigatorSetting_001.swf"
                    version="1.0"  date="2013-3-13" author="way" type="plugin" resizable="false"
                    description="对导航进行设置"/>
              <item name="主题设置" 
                    icon="plugins/themeSetting_001/assets/icons/icon_48.png" 
                    iconSmall="plugins/themeSetting_001/assets/icons/icon_24.png" 
                    moduleUrl="plugins/themeSetting_001/ThemeSetting_001.swf"
                    version="1.0"  date="2013-3-5" author="way" type="plugin" resizable="false"
                    description="对系统的主题、样式进行设置"/>
            </apps>
            ;     

        [Bindable]
        public var rawListShow:XML = null;  //搜索过滤后的数据

        protected function init(event:FlexEvent):void
        {
            getData();
        }

        protected function textinput1_changeHandler(event:TextOperationEvent):void
        {
            getData();
        }

        //初始化数据
        private function getData():void{
            if(StringUtil.trim(textInput.text) == ""){
                rawListShow = rawList ;

            }else{
                createNewXml(textInput.text,rawList);
            }

            /* 打开或关闭指定项目下的所有树项目。如果设置 dataProvider 之后立即调用 expandChildrenOf()，
            则您可能看不到正确的行为。您应该等待对组件进行验证或调用 validateNow() 方法 */
            tree1.validateNow();

            expandtree();
        }

        //搜索过滤后,生产新的xml
        private function createNewXml(searchString:String, xml:XML):void{
            rawListShow =<apps  name="应用程序" />;

            for(var i:int = 0; i<xml.children().length(); i++)
            {
                var itemXml:XML = xml.child("item")[i];
                if(isInStr(searchString,itemXml.@name.toString())){   
                    rawListShow.appendChild(itemXml);
                }
            }
        }

        //判断search_str是否在str内 
        public function isInStr(search_str:String , str:String):Boolean{    
            var num:int= str.indexOf(search_str);
            if(num>-1){
                return true;
            }else{
                return false;
            }
        }

        //展开树
        private function expandtree():void {
            for each(var item:XML in this.tree1.dataProvider)
            this.tree1.expandChildrenOf(item,true);
        }

    ]]>
</fx:Script>
<fx:Declarations>
    <!-- 该例子由waylau.com提供-->
</fx:Declarations>
<s:TextInput prompt="请输入要搜索的字段"  x="10" y="10" 
             change="textinput1_changeHandler(event)" id="textInput"/>
<mx:Tree id="tree1" dataProvider="{rawListShow}" 
         labelField="@name" width="200" height="300" x="10" y="40">
</mx:Tree>

<s:Label text="更多例子 请关注  waylau.com" x="10" y="360"/>
</s:Application>