Can't load image in swf - actionscript-3

Question

I get error with load image into swf file. Here is my code:
private var loader:Loader = new Loader( );
public function Battle()
{
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("http://www.google.com.vn/images/srpr/logo4w.png"));
}
private function onComplete(event:Event):void
{
addChild(loader);
}
e very thing is OK, logo of Google appeared. But I need to manipulate pixel the image have loaded. I add a image Bitmap :
private var loader:Loader = new Loader( );
private var image:Bitmap;
public function Battle()
{
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("http://www.google.com.vn/images/srpr/logo4w.png"));
}
private function onComplete(event:Event):void
{
image = Bitmap(loader.content);
this.addChild(image);
}
There is nothing appear. I can't find any solution on internet. I try and detect :
private function onComplete(event:Event):void
{
image = Bitmap(loader.content);
//after above line, rest of function never run
addChild(image); // <-- no run ##
trace("this no run"); // <-- no run ##
}
I use Flash Builder 4 and have no error or any warning.
Can somebody show me a solution, please?
Thank for reading.

Answer 1

You can't access pixel data of an image if image is in different domain than your application (and there is no crossdomain policy file)

Answer 2

1 You need crossdomain.xml on Google site :)
2 You need use checkpolicy:
var context:LoaderContext = new LoaderContext();
context.checkPolicyFile = true;
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("http://www.google.com.vn/images/srpr/logo4w.png"), context);
but it works only if Google add crossdomain.
3 You can use little serverside proxy on your domain. Flash call proxy to get file with your url, proxy download it and return to flash...