how to listen for vcard changes of any of my roster entries

Question

is there is any way in smack library that make me able to be updated with changes in vcard of any of my contacts I tried roster listener and packets listeners which listen for Iq packets but I couldn't get any thing

Answer 1

Short answer: No.

Long answer: With the currently deployed vCard spec, you can't get notifications of changes. You can however, detect when the embedded avatar changes.

In the new, vCard4-based spec, this is solved by re-using PEP for notifications. Unfortunately, it isn't widely deployed yet.