Q:

decryption code for taggable friends id of facebook in ios

I want to post comments on friends wall. all i am doing there is accessing taggable_friends id to post on that friends wall. but for every session the friends id is getting changed. Is there any need to decrypt the id or any other possible solution. I am working on graph api, ios 7, json.

A:

taggable_friends does not return actual user ids, it returns tokens that you can use to tag friends in status updates etc. There is no way to convert these tokens to real user ids and is part of an effort to increase privacy.
I assume that you are using v2.0 of the Graph API, so your only option would be the /me/friends edge. This will return a list of all friends of the user that also use your app.
As far as I know the IDs returned there can be used to post on the timeline if you have all required permissions.

