How to get width and height from Loader object

Question

package
{
    import flash.display.*;
    import flash.events.*;
    import flash.net.URLRequest;

    public class Main extends MovieClip
    {
        // state
        private var iname:String = "image.gif";
        private var w:int;
        private var h:int;
        private var loader:Loader;

        // constructor
        public function Main():void
        {
            loadImage( iname ); 
            trace( w + " " + h );

        }

        // methods
        private function loadImage( filename:String ):void
        {
            loader = new Loader();
            loader.contentLoaderInfo.addEventListener( Event.COMPLETE, completeHandler );
            loader.contentLoaderInfo.addEventListener( Event.COMPLETE, someHandler );
            var request:URLRequest = new URLRequest( filename );
            loader.load( request );
            this.addChild( loader );        
        }



        // event handlers
        private function completeHandler( event:Event ):void
        {           
            trace( "image loaded\n" + event.target.url );
            trace( event.target );
        }           

        private function someHandler( event:Event ):void
        {
            w = loader.contentLoaderInfo.width;
            h = loader.contentLoaderInfo.height;            
        }
    }
}

But when i ran i get 0 0 for width and height. How can i get the correct values ? Also if the picture is loaded correctly and after i attach it to a movieclip why i cannot take the width and height from movieclip object?

Answer 1

The loading of your image is not instantaneous.
Trace the width and height in one of your Event.COMPLETE handlers and it will work just fine!

Answer 2

Is it just me or are you asking for the width and height before the Complete event fires? What results do you get if you move your w and h trace into the "someHandler" function, after you set them?

Answer 3

You're asking for the contentLoaderInfo.height... you should be asking for the content height.

h = event.target.content.height;
w = event.target.content.width;