actionscript-3 - 在浏览器关闭或更改页面(AS3)上通知Flash Player

Question

我必须在闪存中检测用户是否关闭了浏览器或转到了另一个页面，并且闪存不再可用。我该如何实现？

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 );
        }
    }
} 

我不记得我从哪里得到的，但是我已经使用了它，并且效果很好。当然，并非所有浏览器都可以合作，但是总比没有好……