How to create a calendar using Xcode 4.5

Question

I am new to xcode and trying to create a calendar in one of the tabs in a tab based application. I dont know what needs to be added in the view area, but from my searching net I have come to know that using eventkit.h one can create a calender. So I added Eventkit.framework in my Framework folder.
Then in calendarviewcontroller.h
#import <EventKit/EventKit.h>
#import <UIKit/UIKit.h>
@interface CalenderViewController : UIViewController
@end
and in .m I somehow found out to insert following
-(IBAction)AddEvent:(id)sender{
EKEventStore *eventDB = [[[EKEventStore alloc] init] autorelease];
EKEvent *holidayEvent  = [EKEvent eventWithEventStore:eventDB];
holidayEvent.title     = [self.item customValueForKey:@"title"];
holidayEvent.startDate = startDate;
holidayEvent.endDate   = endDate;
holidayEvent.allDay = YES;
[holidayEvent setCalendar:[eventDB defaultCalendarForNewEvents]];
NSError *error;
[eventDB saveEvent:holidayEvent span:EKSpanThisEvent error:&error];
if (error == noErr)
    [self sendDidFinish];
    return NO;
else
    [self sendDidFailWithError:error];
but I dont know what needs to be added before this code in .m file.
Kindly suggest

Answer 1

from my searching net I have come to know that using eventkit.h one can create a calender. So I added Eventkit.framework in my Framework folder.
That code fragment does not create a calendar, it adds a calendar event to the default calendar.
If you need a visual calendar control, Cocoa does not include that. Various 3rd-party controls are available to provide a calendar UI. I recommend selecting one based on your specific requirements. For example, this one has a similar appearance to the Calendar app.
https://github.com/klazuka/Kal
You probably have two broad requirement areas: (1) Manage the calendar and event data, which can be done with Event Kit. (2) The user interface to view the calendar and event data, which can be custom developed, optionally using a 3rd-party library.  Be sure to fully understand your requirements before selecting a 3rd-party control.
If you are a new Objective-C developer, expect a learning curve.