Try this
let nextrequest: FBSDKGraphRequest = FBSDKGraphRequest(graphPath:"me/friends", parameters: ["fields": "name, id, gender"], httpMethod: "GET")
nextrequest.start { (connection, result, error) -> Void in
guard let result = result as? [String:[AnyObject]], let listOfFriends = result["data"] else {
return
}
}
}