Add an event into iCal in iPhone application - iphone

Question

There is a requirement in my application in which, when I take an appointment of a doctor for a particular day, that day should be added in iCal. and it should generate an alert view on that particular day.
So, I am not getting how to add an event in iCal. Please give me some answer for this.
The scenario is, I do have a string (NSString) of "date" and "notes" for that particular appointment. Then, how to insert all this information into iCal.
Code:
- (NSArray *)fetchEventsForToday {
NSDate *startDate = [NSDate date];
// endDate is 1 day = 60*60*24 seconds = 86400 seconds from startDate
NSDate *endDate = [NSDate dateWithTimeIntervalSinceNow:86400];
// Create the predicate. Pass it the default calendar.
NSArray *calendarArray = [NSArray arrayWithObject:defaultCalendar];
NSPredicate *predicate = [self.eventStore predicateForEventsWithStartDate:startDate endDate:endDate
calendars:calendarArray];
// Fetch all events that match the predicate.
NSArray *events = [self.eventStore eventsMatchingPredicate:predicate];
return events;
}
// Overriding EKEventEditViewDelegate method to update event store according to user actions.
- (void)eventEditViewController:(EKEventEditViewController *)controller
didCompleteWithAction:(EKEventEditViewAction)action {
NSError *error = nil;
EKEvent *thisEvent = controller.event;
switch (action) {
case EKEventEditViewActionCanceled:
// Edit action canceled, do nothing.
break;
case EKEventEditViewActionSaved:
// When user hit "Done" button, save the newly created event to the event store,
// and reload table view.
// If the new event is being added to the default calendar, then update its
// eventsList.
if (self.defaultCalendar == thisEvent.calendar) {
[self.eventsList addObject:thisEvent];
}
[controller.eventStore saveEvent:controller.event span:EKSpanThisEvent error:&error];
[self.tableView reloadData];
break;
case EKEventEditViewActionDeleted:
// When deleting an event, remove the event from the event store,
// and reload table view.
// If deleting an event from the currenly default calendar, then update its
// eventsList.
if (self.defaultCalendar == thisEvent.calendar) {
[self.eventsList removeObject:thisEvent];
}
[controller.eventStore removeEvent:thisEvent span:EKSpanThisEvent error:&error];
[self.tableView reloadData];
break;
default:
break;
}
// Dismiss the modal view controller
[controller dismissModalViewControllerAnimated:YES];
}
// Set the calendar edited by EKEventEditViewController to our chosen calendar - the default calendar.
- (EKCalendar *)eventEditViewControllerDefaultCalendarForNewEvents:(EKEventEditViewController *)controller
{
EKCalendar *calendarForEdit = self.defaultCalendar;
return calendarForEdit;
}
I have used these functions and delegate methods. Please give me idea that, when the user gets alerted for the reminder, how to open up that information regarding that event?

Answer 1

You need the EventKit framework. You can ask the EKEventStore for its calendars, and then use those calendars to create a predicate that lets you find events that match the criteria you're looking for. Or you can create a new EKEvent object and save it into the event store.

Answer 2

Based on Apple Documentation, this has changed a bit as of iOS 6.0.
1) You should request access to the user's calendar via "requestAccessToEntityType:completion:" and execute the event handling inside of a block.
2) You need to commit your event now or pass the "commit" param to your save/remove call
Everything else stays the same...
Add the EventKit framework and #import to your code.
To add an event:
EKEventStore *store = [[EKEventStore alloc] init];
[store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
if (!granted) { return; }
EKEvent *event = [EKEvent eventWithEventStore:store];
event.title = #"Event Title";
event.startDate = [NSDate date]; //today
event.endDate = [event.startDate dateByAddingTimeInterval:60*60]; //set 1 hour meeting
[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
}];
Remove the event:
EKEventStore* store = [[EKEventStore alloc] init];
[store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
if (!granted) { return; }
EKEvent* eventToRemove = [store eventWithIdentifier:savedEventId];
if (eventToRemove) {
NSError* error = nil;
[store removeEvent:eventToRemove span:EKSpanThisEvent commit:YES error:&error];
}
}];