Facebook and Flash -- getting an embedded Flash app to work with getURL() or navigateToURL()

Long story short, you can't use getURL() or navigateToURL() with Flash when you embed the piece with fb:swf. The Flash security sandbox prohibits this in a flash movie loaded from a different domain. You can use an iframe but that causes other issues with Facebook. The folks at Facebook decided to resolve this by using a localConnection instead.

To use it add this FBML tag to the page where your FB:swf tag is:

fb:fbjs_bridge

I then created a util function called getURL() to remind me of the good old days. This function first checks to see if it can make the navigateToURL() directly and if not uses the lc instead. This way the same movie will work as a standalone and on Facebook too:

public static function getURL(thisURL:String):void{
var request:URLRequest = new URLRequest(thisURL);
try{
navigateToURL(request);
}catch(er:Error){
// for Facebook
var conn: LocalConnection = new LocalConnection(); ;
conn.send("callFBJS", "document.setLocation",[thisURL]);
}

}

Here is more info onthe genesis of the problem:

http://bugs.developers.facebook.com/show_bug.cgi?id=994#c28