How can I programmatically create an iCal event in the default calendar?
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User
How can I use Objective-C to programmatically create an iCal event in the default calendar? I want to check whether the event already exists and set the button state accordingly.
An example of how to programmatically create an iCAL event in the default calendar, using Objective-C. The code checks if the event already exists, and sets the button state accordingly. Here is the code by @codeburger:
-(void)initCalendar {
// An array of 1 dictionary object, containing START and END values. NSMutableArray* pvDict = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:PV_URL ]];
// Check if the private view event already exists in the default calendar. // Then set the calendar button state.
// Get a entry point to the Calendar database. self.store = [[EKEventStore alloc ] init ];
// Get an array of all the calendars. NSArray *calendars = store.calendars;
// Get the default calendar, set by the user in preferences. EKCalendar *defaultCal = store.defaultCalendarForNewEvents;
// Find out if this calendar is modifiable. BOOL isDefaultCalModifiable = defaultCal.allowsContentModifications ;
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An example of how to programmatically create an iCAL event in the default calendar, using Objective-C. The code checks if the event already exists, and sets the button state accordingly. Here is the code by @codeburger:
ReplyDelete-(void)initCalendar {
// An array of 1 dictionary object, containing START and END values.
NSMutableArray* pvDict = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:PV_URL ]];
// Check if the private view event already exists in the default calendar.
// Then set the calendar button state.
// Get a entry point to the Calendar database.
self.store = [[EKEventStore alloc ] init ];
// Get an array of all the calendars.
NSArray *calendars = store.calendars;
// Get the default calendar, set by the user in preferences.
EKCalendar *defaultCal = store.defaultCalendarForNewEvents;
// Find out if this calendar is modifiable.
BOOL isDefaultCalModifiable = defaultCal.allowsContentModifications ;
// Create an event in the default calendar.
self.event = [ EKEvent eventWithEventStore:store ];
self.event.title = CHELSEA_SPACE ;
self.event.location = CHELSEA_ADDRESS ;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyy-MM-dd HH:mm:ss.S"];
NSString *startString = [[ pvDict objectAtIndex:0] objectForKey:@"starts" ];
NSDate *dateStart = [dateFormatter dateFromString:startString];
NSString *endString = [[ pvDict objectAtIndex:0] objectForKey:@"ends" ];
NSDate *dateEnd = [dateFormatter dateFromString:endString];
self.event.startDate = dateStart;
self.event.endDate = dateEnd;
self.event.calendar = defaultCal ;
// Alternative code to add 2.5 hours to start time.
// [[NSDate alloc] initWithTimeInterval:9000 sinceDate:event.startDate];
// Search for events which match this date/time start and end.
// Compare the matched events by event TITLE.
NSPredicate *predicate = [store predicateForEventsWithStartDate:event.startDate
endDate:event.endDate calendars:calendars];
NSArray *matchingEvents = [store eventsMatchingPredicate:predicate];
self.calendarButton.enabled = NO;
if( ! isDefaultCalModifiable ) {
// The default calendar is not modifiable
return ;
}
if ( [ matchingEvents count ] > 0 ) {
// There are already event(s) which match this date/time start and end.
// Check if this event is the PV
EKEvent *anEvent;
int j;
for ( j=0; j < [ matchingEvents count]; j++) {
anEvent = [ matchingEvents objectAtIndex:j ] ;
if([ CHELSEA_SPACE isEqualToString: anEvent.title ]) {
// PV event already exists in calendar.
return;
}
}
[ anEvent release ];
}
self.calendarButton.enabled = YES;
[ pvDict release ];
}
-(void)addEventToCalendar:(id)sender {
NSError *error;
BOOL saved = [self.store saveEvent:self.event span:EKSpanThisEvent error:&error];
NSLog(@"Saved calendar event = %@\n", (saved ? @"YES" : @"NO"));
self.calendarButton.enabled = NO;
}
I've seen this question with no answer and felt like it should be edited giving full credit to @codeburger.