i want to fectch fb friends list that have not used or installed my app. and is there any other way that i fetch Friend unique id. because withour friend id i can't send invitation to use my app or game. please help me.
. I have used FacebookSDk 4.0 and Graph API 2.3..both are latest.
Try using the taggable_friends endpoint: https://developers.facebook.com/docs/graph-api/reference/v2.0/user/taggable_friends