Android: Caricare un'immagine dal web

public Bitmap getRemoteImage(final URL aURL) {

      try {

            final URLConnection conn = aURL.openConnection();

            conn.connect();

            final BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());

            final Bitmap bm = BitmapFactory.decodeStream(bis);

            bis.close();

            return bm;

      } catch (IOException e) {

            [...]

      }

      return null;

}