Question

I have to detect in my flash if the user closes his browser or goes to another page and the flash is not accessible anymore. How do i achieve that ?

Answer 1

ExternalInterfaceUtil.addExternalEventListener(“window.onunload”, handleLogout, “unloadFlex”);

package
{
    import flash.external.ExternalInterface;

    public class ExternalInterfaceUtil
    {
        public static function addExternalEventListener( qualifiedEventName:String, callback:Function,callBackAlias:String ):void
        {
            // 1. Expose the callback function via the callBackAlias
            ExternalInterface.addCallback( callBackAlias, callback );
            // 2. Build javascript to execute
            var jsExecuteCallBack:String = "document.getElementsByName('"+ExternalInterface.objectID+"')[0]."+callBackAlias+"()";
            var jsBindEvent:String = "function(){"+qualifiedEventName+"= function(){"+jsExecuteCallBack+"};}";
            // 3. Execute the composed javascript to perform the binding of the external event to the specified callBack function
            ExternalInterface.call( jsBindEvent );
        }
    }
} 

I don’t remember where I got this from, but I’ve used it and it works pretty well. Of course not all browsers are going to cooperate, but it is better than nothing…