Custom Flash/Flex Event object

Question

I'm in a Flex Mobile application project. I need to dispatch an event to the FlexGlobals.topLevelApplication and it has to contain a custom message.

I'm trying to make an object and dispatch it like this:

//create the event Object

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

FlexGlobals.topLevelApplication.dispatchEvent(receivedObjMsg);

and then receive it like this on the other view like this:

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


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

But its saying it cant make an object into an event:

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

I also tried putting this in the bottom of the main application mxml where i created the event;

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

I can't really seem to find an example that demonstrates what im trying to do. Any ideas how I can get this to work?

Answer 1

dispatchEvent takes an Event

Create your own class that extends Event and then dispatch that.

Take a look at this article that discusses how to dispatch a custom event.

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)
    {

    }

}

And when you want to dispatch it.

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

From the topLevelApplication, make sure that you listen for the same event.

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

In the receiveMsgHandler take an object of type MyOwnEvent.

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

Answer 2

dispachEvent() only accepts an Event object. You'll need to make your own class ReceivedObjMsg.

Details on creating your own class in an answer on a previous question of yours.

Your issue is basically here:

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

FlexGlobals.topLevelApplication.dispatchEvent(receivedObjMsg);

Parsing Object through dispatchEvent()