ios中将事件同步到系统日历

//获取日历事件

EKEventStore* eventStore = [[EKEventStorealloc] init];

NSDate* ssdate = [NSDatedateWithTimeIntervalSinceNow:-3600*24*90];//事件段，开始时间

NSDate* ssend = [NSDatedateWithTimeIntervalSinceNow:3600*24*90];//结束时间，取中间

NSPredicate* predicate = [eventStore predicateForEventsWithStartDate:ssdate

endDate:ssend

calendars:nil];

NSArray* events = [eventStore eventsMatchingPredicate:predicate];//数组里面就是时间段中的EKEvent事件数组

//往日历写事件

EKEvent *event  = [EKEventeventWithEventStore:eventStore];

NSDate *startDate = [[NSDate alloc] init];

NSDate *endDate  = [[NSDate alloc] init];

event.title     = @"New event test ";

event.startDate = startDate;

event.endDate   = endDate;

event.location = @"北京市，海淀区";

//添加提醒

[event addAlarm:[EKAlarmalarmWithRelativeOffset:60.0f * -60.0f * 24]];

[event addAlarm:[EKAlarmalarmWithRelativeOffset:60.0f * -15.0f]];

[event setCalendar:[eventStore defaultCalendarForNewEvents]];

__block NSError *err;

//ios 6以后

if([eventStore respondsToSelector:@selector(requestAccessToEntityType:completion:)]) {

[eventStore requestAccessToEntityType:EKEntityTypeEvent

completion:^(BOOL granted, NSError *error) {

dispatch_async(dispatch_get_main_queue(), ^{

if (granted) {

[eventStore saveEvent:event span:EKSpanFutureEvents commit:YES error:&err];

UIAlertView *alert = [[UIAlertView alloc]

initWithTitle:@"Event Created"

message:@"Yay!?"

delegate:nil

cancelButtonTitle:@"Okay"

otherButtonTitles:nil];

[alert show];

} else {

NSLog(@"不允许访问日历");

}

});

}];

} else {

[eventStore saveEvent:event span:EKSpanThisEvent error:&err];

}