How do I resize a loaded jpg image?

Posted on 2010-09-20
Last Modified: 2013-11-11

I'm loading an image (from XML, decoded to a ByteArray) into a Sprite (see the code). I need to size it according to the width and height in the XML. How is this done?


var badgeholderPhotoBA:ByteArray = Base64.decodeToByteArray(badgeDataXML.BADGEREQUEST.PHOTO);

var badgeholderImageHolder:Sprite = new Sprite();

var badgeholderImageLoader:Loader = new Loader();



badgeholderImageHolder.x = object.X;

badgeholderImageHolder.y = object.Y;

//this messes it do I scale/resize the image????

badgeholderImageHolder.width = object.WIDTH as int;

badgeholderImageHolder.height = object.HEIGHT as int;


Open in new window

Question by:BlueKarana

Accepted Solution

ActionScript_Helper earned 300 total points
ID: 33723366
May be you can try resizing badgeholderImageLoader or badgeholderImageLoader.content.
badgeholderImageLoader.width = object.WIDTH as int;
badgeholderImageLoader.height = object.HEIGHT as int;


badgeholderImageLoader.content.width = object.WIDTH as int;
badgeholderImageLoader.content.height = object.HEIGHT as int;

Another scenario may be that loadBytes are taking some time, and before that you are trying to scale image. So may be you should track complete event and than you should resize the image:

badgeholderImageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, imageLoaded);

function imageLoaded(evt:Event):void
{ = object.WIDTH as int; = object.HEIGHT as int;

Assisted Solution

bupper earned 200 total points
ID: 33726285
You can definitely resize it to a specific size, but you may loose the proportions. Bad idea, unless the size in the XML is adjusted perfectly for that.

Instead, use the scale property:
yourmv.xscale = XSCALE;
yourmv.yscale = YSCALE;

Oh, and make sure you specify the forceSmoothing property (otherwise it will look grainy):
yourmv.forceSmoothing = true;

Author Comment

ID: 33727099
Both suggestions offer good advice (the loader event listener and smoothing), but there are a few details I was missing. I found help in a piece of code at (see code for credit).

BTW, my photos are cropped to a certain aspect ratio for layout on a badge. If the user didn't crop at this point (print preview or print) the'll get a warning.

Smoothing is done differently in AS3 though. See onComplete in code. I did add smoothing for good measure.

If I "get it" fully, what I was missing was putting the loader, through the use of a LoaderInfo object, into a displayObject and changing the width and height of that. (Probably not using correct terminology. Still trying to figure this AS thing out!


 * Adapted from ~~


 * DATE: 19/April/2010

 * Dynamic Image load and resize

 * Email: midhund[at]

 * Web:



	import flash.display.DisplayObject;

	import flash.display.Loader;

	import flash.display.LoaderInfo;

	import flash.display.Sprite;



	import flash.utils.ByteArray;

	import com.dynamicflash.util.Base64;


	 public class ImageLoader extends Sprite{

	 // loader vaiable to hold the image

	 protected var loader:Loader;

	 // set the image resize max width and max height.

	 //protected var maxW:Number = 400, maxW:Number = 500;

	 protected var newW:Number, newH:Number;

	 protected var newX:Number, newY:Number;


	 public function ImageLoader(imageString:String, designW:Number, designH:Number, designX:Number, designY:Number):void {

		 newW = designW;

		 newH = designH;

		 newX = designX;

		 newY = designY;



	 public function loadImage(imageString:String):void {

		// create the loader instance from Loader class.

		 loader =  new Loader();

		//decode the photo from the encoded string and put it in a byte array

		var PhotoBA:ByteArray = Base64.decodeToByteArray(imageString);

		// create the loader instance from Loader class.

		 // add the event listener to the onComplete event.

		loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);

		 // event listener for the IO error

		loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);

		 // load the image to the loader component



		// create a new sprite to hold the loader.

		 var container:Sprite = new Sprite();;, 0, newW, newH);

		 // place image according to badge design

		 container.x = newX;

		 container.y = newY;


		 // add the loader to the sprite.


		 // add the container to the stage.




	 private function ioErrorHandler(event:IOErrorEvent):void {

		 trace("ioErrorHandler: " + event);


	 private function onComplete(event:Event):void {

		 // remove the complete listener from the loader component.

		 loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onComplete); = true; //This is a Bitmap object

		 var loaderInfo:LoaderInfo = as LoaderInfo;

		 var dispObj:DisplayObject = loaderInfo.content;


		 dispObj.width = newW;

		 dispObj.height = newH;

		 //align the display object to its container

		 dispObj.x = 0;

		 dispObj.y = 0;





Open in new window


Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is primarily concerned with ActionScript 3 and generally specific to AVM2.  Most suggestions would apply to ActionScript 2 as well, and I've noted those tips that differ between AS2 and AS3. With the advent of ActionS…
In my long career of working as an actionscript developer, I had spent sleepless night often working hard to solve some small problems which actually took a lot of my development time; later found out the solutions to be a line or two. Here are s…
The goal of the tutorial is to teach the user how to select the video input device. Make sure you have an input device that in connected and work and recognized by Adobe Flash Media Live Encoder and select it in the “video input” menu.
This Micro Tutorial will teach to how to utilize bit rate in Adobe Flash Media Live Encoder.

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now