<?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">    <fx:Declarations>        <!-- 将非可视元素（例如服务、值对象）放在此处 -->    </fx:Declarations>    <fx:Script>        <![CDATA[            import mx.controls.Alert;            import mx.collections.ArrayCollection;            [Embed(source="qq.png")]            private var icon1:Class;             [Bindable]            private var user1:ArrayCollection = new ArrayCollection([                {label:"lee",data:1,tool:"ps",icon:icon1},                {label:"lei",data:2,tool:"java",icon:icon1},                {label:"huang",data:3,tool:"c#",icon:icon1}            ])             private function changeFn(e:Event):void{                //Alert.show(cbx1.selectedItem.tool.toString());            }        ]]>    </fx:Script>                <mx:ComboBox id="cbx1" height="50" selectedIndex="1"     dataProvider="{user1}" width="150" change="changeFn(event)" /></s:Application>

<?xml version="1.0"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">        <mx:Script>        <![CDATA[                        private var backBool:Boolean=true;                        private function backHandler():void{                                backBtn.addEventListener(Event.ENTER_FRAME,enterFrameHandler);                            }                        private function enterFrameHandler(event:Event):void{                                if(backBool){                                        if(btnGroup.y>-30){                                                btnGroup.y-=5;                                                                                                if(btnGroup.y==-30){                                                        backBool=!backBool;                                                        backBtn.removeEventListener(Event.ENTER_FRAME,enterFrameHandler);                                                    }                                            }                                            }else{                                        if(btnGroup.y<0){                                                btnGroup.y+=5;                                                if(btnGroup.y==0){                                                        backBool=!backBool;                                                        backBtn.removeEventListener(Event.ENTER_FRAME,enterFrameHandler);                                                    }                                            }                                    }                            }                    ]]>            </mx:Script>        <mx:VBox id="btnGroup" y="0" width="100%" backgroundColor="#eeeeee" paddingTop="5" paddingLeft="5" paddingRight="5" paddingBottom="5">                 <mx:HBox>                            <mx:Button id="searchButton" label="Search Panel"                                              click="myViewStack.selectedChild=search;"/>                        <mx:Button id="cInfoButton" label="Customer Info Panel"                                              click="myViewStack.selectedChild=custInfo;"/>                        <mx:Button id="aInfoButton" label="Account Panel"                                              click="myViewStack.selectedChild=accountInfo;"/>                    </mx:HBox>                <mx:Button id="backBtn" label="back" click="backHandler()"/>            </mx:VBox>                <mx:ViewStack y="70" id="myViewStack" borderStyle="solid" width="100%" height="80%">                                <mx:Canvas id="search" backgroundColor="#FFFFCC" label="Search" width="100%" height="100%">                        <mx:Label text="Search Screen" color="#000000"/>                    </mx:Canvas>                                <mx:Canvas id="custInfo" backgroundColor="#CCFFFF" label="Customer Info" width="100%" height="100%">                        <mx:Label text="Customer Info" color="#000000"/>                    </mx:Canvas>                                <mx:Canvas id="accountInfo" backgroundColor="#FFCCFF" label="Account Info" width="100%" height="100%">                        <mx:Label text="Account Info" color="#000000"/>                    </mx:Canvas>            </mx:ViewStack>            </mx:Application>

<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" >    <mx:XMLList id="myXMLList"> <!-- 添加菜单项 -->        <menuiem id="menu1">            <menuiem id="SubMenu11" type="radio" groupName="one"/>            <menuiem id="SubMenu12" type="radio" groupName="one"/>        </menuiem>                <menuiem id="menu2">            <menuiem id="SubMenu21" type="radio" groupName="two"/>            <menuiem id="SubMenu22" type="radio" groupName="two"/>        </menuiem>                <menuiem id="menu3">            <menuiem id="SubMenu31" type="radio" groupName="three"/>            <menuiem id="SubMenu32" type="radio" groupName="three"/>        </menuiem>                <menuiem id="menu4">            <menuiem id="SubMenu41" type="radio" groupName="four"/>            <menuiem id="SubMenu42" type="radio" groupName="four"/>        </menuiem>    </mx:XMLList>            <!-- 设置菜单项的状态 -->    <mx:states>        <mx:State name="index1">                    <!--新建“index1”状态-->            <mx:AddChild position="lastChild">                <!--添加VBox组件，组件颜色为“#FFFFFF”，透明度为0.5-->                <mx:VBox id="myVBox1" x="{myMenuBar.x}" y="{myMenuBar.y+myMenuBar.height}" width="{myMenuBar.width}"                         height="248" backgroundColor="#FFFFFF" backgroundAlpha="0.5" fontSize="12">                </mx:VBox>            </mx:AddChild>        </mx:State>        <mx:State name="index2">                    <!--新建“index2”状态-->            <mx:AddChild position="lastChild">                <!--添加VBox组件，组件颜色为“#F5E531”，透明度为0.5-->                <mx:VBox id="myVBox2" x="{myMenuBar.x}" y="{myMenuBar.y+myMenuBar.height}" width="{myMenuBar.width}"                         height="248" backgroundColor="#F5E531" backgroundAlpha="0.5">                </mx:VBox>            </mx:AddChild>        </mx:State>    </mx:states>            <!--定义一级菜单切换效果-->    <mx:transitions>        <!--可以重复-->        <mx:Transition id="myTransition1" fromState="*" toState="index1">            <mx:Parallel target="{myVBox1}">                <mx:WipeDown duration="2000"/>                <mx:Dissolve alphaFrom="0.0" alphaTo="1.0" duration="2000"/>            </mx:Parallel>        </mx:Transition>        <mx:Transition id="myTransition5" fromState="*" toState="index2"><!-- 从状态*到状态index2 -->            <mx:Parallel target="{myVBox2}">                <mx:Blur blurXFrom="0" blurXTo="50" duration="2000"/><!--横坐标向外模糊50个像素 -->                <mx:Dissolve alphaFrom="0.0" alphaTo="1.0" duration="2000"/>            </mx:Parallel>        </mx:Transition>    </mx:transitions>    <mx:Script> <!-- 定义状态的切换-->        <![CDATA[            import mx.events.MenuEvent;            private function menuClickHandle(e:MenuEvent):void {                if (e.label == "menu1"||e.label =="menu2"||e.label =="menu3"||e.label =="menu4")                    currentState = "index1";                else if (e.label == "SubMenu11"||e.label == "SubMenu12"||e.label == "SubMenu21"||e.label == "SubMenu22"||e.label == "SubMenu31"||e.label == "SubMenu32"||e.label == "SubMenu41"||e.label == "SubMenu42")                    currentState = "index2";            }        ]]>    </mx:Script>    <mx:MenuBar id="myMenuBar" y="40" width="414" dataProvider="{myXMLList}" labelField="@id" showRoot="false" horizontalCenter="0" change="menuClickHandle(event)" height="36">    </mx:MenuBar></mx:Application>