In my iOS app, I get an access token using the following code:
[self.facebook authorize:[NSArray arrayWithObjects:@\"user_events\",
@\"friends_events\", nil
Use /me/events for getting the events the user has responded to, and /me/events/not_replied for the others.
For example (assuming you have created a session):
[FBRequestConnection startWithGraphPath:@"/me/events/not_replied" completionHandler:^(FBRequestConnection *connection, id result, NSError *error)
{
FBGraphObject* data = (FBGraphObject*)result;
NSMutableArray* array = [data objectForKey:@"data"];
//parse data etc..
}];
See https://developers.facebook.com/docs/graph-api/reference/v2.0/user/events/ for more info.