You could also use this LoadingImageView view to load an image from a url:
http://blog.blundellapps.com/imageview-with-loading-spinner/
Once you have added the class file from that link you can instantiate a url image view:
in xml:
In code:
final LoaderImageView image = new LoaderImageView(this, "http://developer.android.com/images/dialog_buttons.png");
And update it using:
image.setImageDrawable("http://java.sogeti.nl/JavaBlog/wp-content/uploads/2009/04/android_icon_256.png");