Flex : 自定义 Event

最新推荐文章于 2023-03-11 09:00:00 发布

goby2008

最新推荐文章于 2023-03-11 09:00:00 发布

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分类专栏： flex 文章标签： Flex Adobe Flash XML Blog

本文链接：https://blog.youkuaiyun.com/goby2008/article/details/83533291

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本文介绍了一个使用Flash开发的事件处理案例，定义了两个自定义事件类型，并通过MXML界面触发这些事件进行处理。代码展示了如何创建自定义事件类TestEvent，并在TestEventComp组件中通过按钮点击触发eventA事件。

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//myEvents\events\TestEvent.as

package myEvents . events
{
// Writed by Aslan Shek
// http://www.slsay.com/archives/25
import flash.events . Event ;
public class TestEvent extends Event
{
public static const EVENT_A : String = "eventA" ;
public static const EVENT_B : String = "eventB" ;
public function TestEvent ( type : String )
{
super ( type ) ;
}
}
}

//myEvents\TestEventComp.mxml

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

<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml"
width="400" height="300" >
<mx:Script>
<![CDATA[
// http://www.slsay.com/archives/25
import myEvents.events.TestEvent;
]]>
</mx:Script>
<mx:Metadata >
[Event(name="eventA", type="myEvents.events.TestEvent")]
</mx:Metadata >
<mx:Button label="Test Event"
click="dispatchEvent(new TestEvent(TestEvent.EVENT_A));" />
</mx:Canvas >

//test.mxml

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

< mx : Application xmlns : mx= "http://www.adobe.com/2006/mxml"
layout= "absolute"
xmlns : myEvents= "myEvents.*" >
< mx : Script >
<! [ CDATA [
// Writed by Aslan Shek
// http://www.slsay.com/archives/25
import myEvents . events . TestEvent ;
private function testEventHandler ( evt : TestEvent ) : void
{
trace ( "asdf" ) ;
}
] ] >
</ mx : Script >
< myEvents : TestEventComp eventA= "testEventHandler(event);" />
</ mx : Application >