小胖说事-------iOS利用代码添加事件到系统日历中

#import 

    //事件市场
    EKEventStore *eventStore = [[EKEventStore alloc] init];
     
    //6.0及以上通过下面方式写入事件
    if ([eventStore respondsToSelector:@selector(requestAccessToEntityType:completion:)])
    {
        // the selector is available, so we must be on iOS 6 or newer
        [eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
            dispatch_async(dispatch_get_main_queue(), ^{
                if (error)
                {
                    //错误细心
                    // display error message here
                }
                else if (!granted)
                {
                    //被用户拒绝，不允许访问日历
                    // display access denied error message here
                }
                else
                {
                    // access granted
                    // ***** do the important stuff here *****
                     
                    //事件保存到日历
                     
                     
                    //创建事件
                    EKEvent *event  = [EKEvent eventWithEventStore:eventStore];
                    event.title     = @"哈哈哈，我是日历事件啊";
                    event.location = @"我在杭州西湖区留和路";
                     
                    NSDateFormatter *tempFormatter = [[NSDateFormatter alloc]init];
                    [tempFormatter setDateFormat:@"dd.MM.yyyy HH:mm"];
                     
                    event.startDate = [[NSDate alloc]init ];
                    event.endDate   = [[NSDate alloc]init ];
                    event.allDay = YES;
                     
                    //添加提醒
                    [event addAlarm:[EKAlarm alarmWithRelativeOffset:60.0f * -60.0f * 24]];
                    [event addAlarm:[EKAlarm alarmWithRelativeOffset:60.0f * -15.0f]];
                     
                    [event setCalendar:[eventStore defaultCalendarForNewEvents]];
                    NSError *err;
                    [eventStore saveEvent:event span:EKSpanThisEvent error:&err];
                     
                    UIAlertView *alert = [[UIAlertView alloc]
                                          initWithTitle:@"Event Created"
                                          message:@"Yay!?"
                                          delegate:nil
                                          cancelButtonTitle:@"Okay"
                                          otherButtonTitles:nil];
                    [alert show];
                     
                    NSLog(@"保存成功");
                     
                }
            });
        }];
    }

原文地址：http://www.cnblogs.com/xiaobaichangan/p/5160025.html