flex4.6事件分派+组件+参数传递

<?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"

			   xmlns:hz="com.hz.*"

			   creationComplete="initHandler(event)">

	<fx:Script>

		<![CDATA[

			import Event.AddStuEvent;

			

			import mx.collections.ArrayCollection;

			import mx.controls.Alert;

			import mx.events.FlexEvent;

			

			protected function initHandler(event:FlexEvent):void

			{

				stuInfo.stuColl=new ArrayCollection();

				addEventListener(AddStuEvent.ADD_USER,addBtn);

			}

			

			protected function addBtn(event:AddStuEvent):void

			{

				

				if(stuMana.stuName.text!=""&&stuMana.stuAge.text!="")

				{

				stuInfo.stuColl.addItem(event.object);

				}

				else

				{

					Alert.show("两项都要填三！","温馨提示");

				}

			}

			

		]]>

	</fx:Script>

	<fx:Declarations>

		<!-- 将非可视元素（例如服务、值对象）放在此处 -->

	</fx:Declarations>

	<s:layout>

		<s:HorizontalLayout gap="30" paddingBottom="30" paddingLeft="30" paddingRight="30" paddingTop="30"/>

	</s:layout>

	<hz:StuInfo id="stuInfo" width="50%" height="100%"/>

	<hz:StuManager id="stuMana" width="50%" height="100%"/>

</s:Application>

上面是主application文件：

<?xml version="1.0" encoding="utf-8"?>

<s:Panel xmlns:fx="http://ns.adobe.com/mxml/2009" 

		 xmlns:s="library://ns.adobe.com/flex/spark" 

		 xmlns:mx="library://ns.adobe.com/flex/mx"

		 title="添加学生"

		 creationComplete="initHandler(event)">

	<fx:Script>

		<![CDATA[

			import Event.AddStuEvent;

			

			import mx.events.FlexEvent;

			

			public function initHandler(event:FlexEvent):void

			{

				addBtn.addEventListener(MouseEvent.CLICK,addBtnHandler);

			}

			

			protected function addBtnHandler(event:MouseEvent):void

			{

				var object:Object=new Object();

				object={sName:stuName.text,sAge:stuAge.text};

				dispatchEvent(new AddStuEvent(AddStuEvent.ADD_USER,object))

			}

			

		]]>

	</fx:Script>

	<fx:Declarations>

		<!-- 将非可视元素（例如服务、值对象）放在此处 -->

	</fx:Declarations>

		<s:Form width="100%" height="100%">

			<s:FormItem label="学生姓名:" required="true" width="100%">

				<s:TextInput id="stuName" width="100%"/>

			</s:FormItem>

			<s:FormItem label="学生年龄" required="true" width="100%">

				<s:TextInput id="stuAge" width="100%"/>

			</s:FormItem>

		</s:Form>

		<s:controlBarContent>

			<s:Button label="添加学生:" id="addBtn"/>

			<s:Button label="修改信息" id="updateBtn"/>

		</s:controlBarContent>

		<s:controlBarLayout>

			<s:HorizontalLayout horizontalAlign="center" gap="50" paddingTop="9" paddingBottom="9"/>

		</s:controlBarLayout>

</s:Panel>

   下面是自定义事件：定义了一个常量和要传递的参数，event属性只设置了string，bubble默认为false。

package Event

{

	import flash.events.Event;

	

	public class AddStuEvent extends Event

	{

		public static const ADD_USER:String="addUser"; 

		private var _object:Object=null;

		public function AddStuEvent(type:String, object:Object)

		{

			super(type,true);

			_object=object;

		}



		public function get object():Object

		{

			return _object;

		}



		public function set object(value:Object):void

		{

			_object = value;

		}

		override public function clone():Event

		{

			return new AddStuEvent(type,object);

		}

	}

}

<?xml version="1.0" encoding="utf-8"?>

<s:Panel xmlns:fx="http://ns.adobe.com/mxml/2009" 

		 xmlns:s="library://ns.adobe.com/flex/spark" 

		 xmlns:mx="library://ns.adobe.com/flex/mx"

		 title="学生列表"

		 creationComplete="initHandler(event)">

	<fx:Script>

		<![CDATA[

			import mx.collections.ArrayCollection;

			import mx.events.FlexEvent;

			[Bindable]

			public var stuColl:ArrayCollection=null;

			protected function initHandler(event:FlexEvent):void

			{

				// TODO Auto-generated method stub

				

			}

			private function stuArr(item:Object):String

			{

				var str:String=item.sName+"哈哈"+item.sAge;

				return str;

			}

		]]>

	</fx:Script>

	<fx:Declarations>

		<!-- 将非可视元素（例如服务、值对象）放在此处 -->

	</fx:Declarations>

		<s:List id="stuList" width="100%" height="100%" dataProvider="{stuColl}" labelFunction="stuArr">

			

		</s:List>

		<s:controlBarContent>

			<s:Button label="删除学生" id="deleteBtn"/>

		</s:controlBarContent>

</s:Panel>