自定义Flash/Flex事件对象

Question

我在Flex Mobile应用程序项目中。我需要将事件分派给FlexGlobals.topLevelApplication，并且它必须包含一条自定义消息。

我试图让一个对象，并派遣这样说：

//create the event Object 

var receivedObjMsg:Object = new Object(); 
receivedObjMsg.name = "receivedMessage"; 
receivedObjMsg.message = messagevarhere; 

FlexGlobals.topLevelApplication.dispatchEvent(receivedObjMsg); 

，然后接受它像这样在这样的另一种观点：

FlexGlobals.topLevelApplication.addEventListener("receivedMessage", receiveMsgHandler); 


protected function receiveMsgHandler(event:Event):void 
{ 
trace("IT WORKED!"); 
} 

但它说它不能使对象到事件：

Type Coercion failed: cannot convert Object@5a507911 to flash.events.Event. 

我也试图把这个主APPLICAT底部离子mxml在哪里我创建的事件;

<fx:Metadata> 
[Event(name="receivedMessage", type="flash.events.Event")] 
</fx:Metadata> 

我真的不能找到一个示例来说明我在做什么。任何想法如何让这个工作？

Answer 1

dispachEvent()只接受Event对象。你需要制作自己的课ReceivedObjMsg。

有关在previous question of yours的答案中创建自己的班级的详细信息。

您的问题基本上是在这里：

var receivedObjMsg:Object = new Object(); 
receivedObjMsg.name = "receivedMessage"; 
receivedObjMsg.message = messagevarhere; 

FlexGlobals.topLevelApplication.dispatchEvent(receivedObjMsg); 

解析Object通过dispatchEvent()

Answer 2

dispatchEvent需要一个Event

创建自己的类，它扩展Event，然后派遣这一点。

看看this article，它讨论了如何分派自定义事件。

class MyOwnEvent extends Event 
{ 
    public static const RECEIVED_EVENT:String = "receivedEvent"; 
    public string name; 
    public string message; 

    public MyOwnEvent (type:String, bubbles:Boolean = false, cancelable:Boolean = false) 
    { 

    } 

} 

而且当你想分派它。

var myevent:MyOwnEvent = new MyOwnEvent(MyOwnEvent.RECEIVED_EVENT); 
myevent.name = "whatever"; 
myevent.message = "another whatever"; 
FlexGlobals.topLevelApplication.dispatchEvent(myevent); 

从topLevelApplication中，确保您侦听相同的事件。

FlexGlobals.topLevelApplication.addEventListener(MyOwnEvent.RECEIVED_EVENT, receiveMsgHandler); 

在receiveMsgHandler采取MyOwnEvent类型的对象。

protected function receiveMsgHandler(event:MyOwnEvent):void 
{ 
    trace(event.name); 
    trace(event.message); 
}