Showing Image on contact List Issue

AliVireTechnologies1

2013-06-23, 14:34 #1

Member since Jun 2013 · 58 posts
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Subject: Showing Image on contact List Issue

I want to show image on contact list em using the following method in roster list but it is quit annoying that it is taking time and callback method taking time, call back method is executing after the end of all roster list items is there any faster way of getting image from vcard data, I don't want to save bitmap image in dictionary or any observation collection object ,

private void GetVcard(Jid jid)
{
var viq = new VcardIq {To=jid, Type = Matrix.Xmpp.IqType.get };
Model.Utility.xmppClient.IqFilter.SendIq(viq, VcardResponse);
}
private void VcardResponse(object sender, IqEventArgs e)
{
if (e.Iq.Type == Matrix.Xmpp.IqType.result)
{
var vc = e.Iq.Query as Vcard;
if (null != vc.Photo)
{
try
{
ContactPhoto = vc.Photo.Image.UriSource;
}
catch (Exception ex)
{
}
}
else
{
ContactPhoto = new System.Uri("/Assets/Avatar.png", UriKind.Relative);
}
}
}

This post was edited 3 times, last on 2015-08-10, 10:35 by Alex.

Alex

2013-06-23, 20:46 #2

Member since Feb 2003 · 4296 posts · Location: Germany
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you get the vcard and the picture as fast as your server is responding and your internet connection transmits the data.
You should not request the pictures on every login. You should cache them in the storage of your app and request them only once until they change.
see also: http://xmpp.org/extensions/xep-0153.html

Alex