Add Event To Calendar IOS

 NSCalendar* calendar=[NSCalendar currentCalendar];
        
        NSDateComponents* dateComps=[[NSDateComponents alloc] init];
        
        [dateComps setYear:2014];
        [dateComps setMonth:1];
        [dateComps setDay:21];
        
        NSDate* startDate=[calendar dateFromComponents:dateComps];
        
        
        [dateComps setYear:2014];
        [dateComps setMonth:1];
        [dateComps setDay:28];
        
        NSDate* endDate=[calendar dateFromComponents:dateComps];
        
        EKEventStore *store = [[EKEventStore alloc] init];
        [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
            if (!granted) { return; }
            EKEvent *event = [EKEvent eventWithEventStore:store];
            event.title = @"event name goes here";
            event.startDate = startDate;
            event.endDate = endDate;
            [event setCalendar:[store defaultCalendarForNewEvents]];
            NSError *err = nil;
            [store saveEvent:event span:EKSpanThisEvent commit:YES error:&err];
            NSString *savedEventId = event.eventIdentifier;  //this is so you can access this event later
        }];