code: public void loadImage(String uri, ImageSize targetImageSize, ImageLoadingListener listener) {
  		loadImage(uri, targetImageSize, null, listener, null);
  	}
docs: Adds load image task to execution pool. Image will be returned with
  {@link ImageLoadingListener#onLoadingComplete(String, android.view.View, android.graphics.Bitmap)} callback}.
  <br />
  <b>NOTE:</b> {@link #init(ImageLoaderConfiguration)} method must be called before this method call
  
  @param uri             Image URI (i.e. "http://site.com/image.png", "file:///mnt/sdcard/image.png")
  @param targetImageSize Minimal size for {@link Bitmap} which will be returned in
  {@linkplain ImageLoadingListener#onLoadingComplete(String, android.view.View,
  android.graphics.Bitmap)} callback}. Downloaded image will be decoded
  and scaled to {@link Bitmap} of the size which is <b>equal or larger</b> (usually a bit
  larger) than incoming targetImageSize.
  @param listener        {@linkplain ImageLoadingListener Listener} for image loading process. Listener fires
  events on UI thread if this method is called on UI thread.
  @throws IllegalStateException if {@link #init(ImageLoaderConfiguration)} method wasn't called before