XmlPullParser loading images

Hi guys, I'm trying to parse rss feed from one website but I got stuck with parsing images. I want to replace my placeholders with images from that website and when I try to do that nothing happens my placeholders ar still there and here is my code from FeedService class: ` try
{
WebRequest webRequest = WebRequest.Create(url);
WebResponse webResponse = webRequest.GetResponse();

        Stream stream = webResponse.GetResponseStream();
        XmlDocument xmlDocument = new XmlDocument();

        xmlDocument.Load(stream);

        XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDocument.NameTable);
        nsmgr.AddNamespace("dc", xmlDocument.DocumentElement.GetNamespaceOfPrefix("dc"));
        nsmgr.AddNamespace("content", xmlDocument.DocumentElement.GetNamespaceOfPrefix("content"));

        XmlNodeList itemNodes = xmlDocument.SelectNodes("rss/channel/item");

        for (int i = 0; i < itemNodes.Count; i++)
        {
            FeedItem feedItem = new FeedItem();

            if (itemNodes[i].SelectSingleNode("title") != null)
            {
                feedItem.Title = itemNodes[i].SelectSingleNode("title").InnerText;
            }
            if (itemNodes[i].SelectSingleNode("image") != null)
            {
                feedItem.Title = itemNodes[i].SelectSingleNode("image").InnerText;
            }

            if (itemNodes[i].SelectSingleNode("link") != null)
            {
                feedItem.Link = itemNodes[i].SelectSingleNode("link").InnerText;
            }

            if (itemNodes[i].SelectSingleNode("pubDate") != null)
            {
                feedItem.PubDate = Convert.ToDateTime(itemNodes[i].SelectSingleNode("pubDate").InnerText);
            }

            if (itemNodes[i].SelectSingleNode("dc:creator", nsmgr) != null)
            {
                feedItem.Creator = itemNodes[i].SelectSingleNode("dc:creator", nsmgr).InnerText;
            }

            if (itemNodes[i].SelectSingleNode("category") != null)
            {
                feedItem.Category = itemNodes[i].SelectSingleNode("category").InnerText;
            }

            if (itemNodes[i].SelectSingleNode("description") != null)
            {
                feedItem.Description = itemNodes[i].SelectSingleNode("description").InnerText;
            }

            if (itemNodes[i].SelectSingleNode("content:encoded", nsmgr) != null)
            {
                feedItem.Content = itemNodes[i].SelectSingleNode("content:encoded", nsmgr).InnerText;
            }
            else
            {
                feedItem.Content = feedItem.Description;
            }

            feedItemsList.Add(feedItem);
        }
    }
    catch (Exception)
    {
        throw;
    }

    return feedItemsList;
}

}
} and this is the code from FeedItemListAdapter class where I tried to replace placeholders with images from the website: public override View GetView(int position, View convertView, ViewGroup parent)
{
var feedItem = this.feedsList[position];

    var view = (convertView ?? context.LayoutInflater.Inflate(Resource.Layout.FeedItemListItemLayout, parent, false)) as LinearLayout;

    view.FindViewById<TextView>(Resource.Id.title).Text = feedItem.Title.Length < 51 ? feedItem.Title : feedItem.Title.Substring(0, 50) + "...";
    view.FindViewById<TextView>(Resource.Id.creator).Text = feedItem.Creator;
    view.FindViewById<TextView>(Resource.Id.pubDate).Text = feedItem.PubDate.ToString("dd/MM/yyyy HH:mm");

    ImageView imageView = view.FindViewById<ImageView>(Resource.Id.placeholder); 
    Koush.UrlImageViewHelper.SetUrlDrawable (imageView, feedItem.Image, Resource.Drawable.Placeholder);

    return view;
}

}
}`
and this is how it locks after I run it!

https://www.dropbox.com/s/xceek2w7xwg84ci/xamarin.png?dl=0#

Can someone give advice? Thanks!

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