I am looking for a solution which can provide me user id from profile url or fb username
example :http://facebook.com/username
get userid of this url
and also when I try to read friends (I have friend related permission), I am getting blank data array ex:
graph api requ: https://graph.facebook.com/v2.1/me/friends?access_token=xxxxx
response:
{
"data": [
],
"summary": {
"total_count": 455
}
}
Please let me know how can I get friend list and userid using username in Facebook graph api v2.1