FBSession.session.accessTokenData.userID always nil - objective-c

Question

Been using FBConnect for selecting friends, but the FBSession's accessTokenData never has the userID of the user that started the session (also isn't present in their login demo). FBFriendPickerViewController returns friend users with their Ids just fine, but I don't see anything about the current user. Is it possible to get the current user's Id from the FB active session, accessTokenData, or some other means?
EDIT:
Is it possible to get the user's Id returned from this call?
[FBSession openActiveSessionWithReadPermissions:#[#"public_profile", #"user_friends"]
It'll be much nicer to do it all in one step.

Answer 1

You have to request to "/me" to get an 'user_id' since access_token property is encrypted and you couldn't access it from that way.

Answer 2

Here's what I ended up doing:
if (!FBSession.activeSession.isOpen) {
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:#[#"public_profile", #"user_friends"]
allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
else if (session.isOpen) {
if ([session.declinedPermissions containsObject:#"user_friends"]) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"friends"
message:#"Must allow accessing friends"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
else {
[[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
else {
NSLog(#"name %# id %#", user.first_name, user.objectID);
[[FBRequest requestForMyFriends] startWithCompletionHandler: ^(FBRequestConnection *connection,
NSDictionary* result,
NSError *error) {
NSArray* friends = [result objectForKey:#"data"];
NSLog(#"Found: %i friends", friends.count);
for (NSDictionary<FBGraphUser>* friend in friends) {
NSLog(#"I have a friend named %# with id %#", friend.name, friend.objectID);
}
}];
}
}];
}
}
}];