Programmatically Add Custom Event in the Iphone Calendar

Programmatically add custom event in the iPhone Calendar

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 <EventKit/EventKit.h> to your code.

In my example, I have a NSString *savedEventId instance property.

To add an event:

    EKEventStore *store = [EKEventStore new];
    [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.calendar = [store defaultCalendarForNewEvents];
        NSError *err = nil;
        [store saveEvent:event span:EKSpanThisEvent commit:YES error:&err];
        self.savedEventId = event.eventIdentifier;  //save the event id if you want to access this later
    }];

Remove the event:

    EKEventStore* store = [EKEventStore new];
    [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        if (!granted) { return; }
        EKEvent* eventToRemove = [store eventWithIdentifier:self.savedEventId];
        if (eventToRemove) {
            NSError* error = nil;
            [store removeEvent:eventToRemove span:EKSpanThisEvent commit:YES error:&error];
        }
    }];

This adds events to your default calendar, if you have multiple calendars then you'll have find out which one that is

Swift version

You need to import the EventKit framework

import EventKit

Add event

let store = EKEventStore()
store.requestAccessToEntityType(.Event) {(granted, error) in
    if !granted { return }
    var event = EKEvent(eventStore: store)
    event.title = "Event Title"
    event.startDate = NSDate() //today
    event.endDate = event.startDate.dateByAddingTimeInterval(60*60) //1 hour long meeting
    event.calendar = store.defaultCalendarForNewEvents
    do {
        try store.saveEvent(event, span: .ThisEvent, commit: true)
        self.savedEventId = event.eventIdentifier //save event id to access this particular event later
    } catch {
        // Display error to user
    }
}

Remove event

let store = EKEventStore()
store.requestAccessToEntityType(EKEntityTypeEvent) {(granted, error) in
    if !granted { return }
    let eventToRemove = store.eventWithIdentifier(self.savedEventId)
    if eventToRemove != nil {
        do {
            try store.removeEvent(eventToRemove, span: .ThisEvent, commit: true)
        } catch {
            // Display error to user
        }
    }
}

iPhone Event Kit : programmatically SUBSCRIBE to a new calendar

Why not use this: How to programmatically add calendar subscriptions on iOS?

Summarizing the accepted answer:

NSString *url = @"http://server/filename.ics";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

Edit: Used this in my own app and verified that it works...

Edit by MitchR:
For those generating their own ics feeds on the server, the url must
end in .ics to receive the subscription prompt. The MIME type of the
response must also be text/calendar. My server is a .NET/MVC server so
I added a custom route so I could have the .ics on the end of the
controller action.

How to add an event in the device calendar using swift?

Note: If your app is crashing with This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSCalendarsUsageDescription key with a string value explaining to the user how the app uses this data., you'll need to add NSCalendarsUsageDescription to your info.plist. Can follow the example here.

Swift 5.0 Version

import Foundation
import EventKit

let eventStore : EKEventStore = EKEventStore()
      
// 'EKEntityTypeReminder' or 'EKEntityTypeEvent'

eventStore.requestAccess(to: .event) { (granted, error) in
  
  if (granted) && (error == nil) {
      print("granted \(granted)")
      print("error \(error)")
      
      let event:EKEvent = EKEvent(eventStore: eventStore)
      
      event.title = "Test Title"
      event.startDate = Date()
      event.endDate = Date()
      event.notes = "This is a note"
      event.calendar = eventStore.defaultCalendarForNewEvents
      do {
          try eventStore.save(event, span: .thisEvent)
      } catch let error as NSError {
          print("failed to save event with error : \(error)")
      }
      print("Saved Event")
  }
  else{
  
      print("failed to save event with error : \(error) or access not granted")
  }
}   

Reference : https://gist.github.com/mchirico/d072c4e38bda61040f91

How to add event in native IOS Calendar

See the Calendar and Reminders Programming Guide. But the basic process is:

1. Add the EventKit.Framework and EventKitUI.Framework to your project. (See Linking to a Library or Framework.)

2. Import the header:

   #import <EventKitUI/EventKitUI.h>
   

3. If creating an event, you use :

   - (IBAction)didPressCreateEventButton:(id)sender
   {
       EKEventStore *store = [[EKEventStore alloc] init];
   
       if([store respondsToSelector:@selector(requestAccessToEntityType:completion:)])
       {
           // iOS 6
           [store requestAccessToEntityType:EKEntityTypeEvent
                                 completion:^(BOOL granted, NSError *error) {
                                     if (granted)
                                     {
                                         dispatch_async(dispatch_get_main_queue(), ^{
                                             [self createEventAndPresentViewController:store];
                                         });
                                     }
                                 }];
       } else
       {
           // iOS 5
           [self createEventAndPresentViewController:store];
       }
   }
   
   - (void)createEventAndPresentViewController:(EKEventStore *)store
   {
       EKEvent *event = [self findOrCreateEvent:store];
   
       EKEventEditViewController *controller = [[EKEventEditViewController alloc] init];
       controller.event = event;
       controller.eventStore = store;
       controller.editViewDelegate = self;
   
       [self presentViewController:controller animated:YES completion:nil];
   }
   

4. Your view controller should conform to the EKEventEditViewDelegate protocol:

   @interface ViewController () <EKEventEditViewDelegate>
   

   and implement the didCompleteWithAction method:

   - (void)eventEditViewController:(EKEventEditViewController *)controller didCompleteWithAction:(EKEventEditViewAction)action
   {
       [self dismissViewControllerAnimated:YES completion:nil];
   }
   

5. You can obviously create your event any way you want. For example, this is looks for an event in the next week with the appropriate title, and if it doesn't find it, create a new event (hour long event that starts in four hours):

   - (EKEvent *)findOrCreateEvent:(EKEventStore *)store
   {
       NSString *title = @"My event title";
   
       // try to find an event
   
       EKEvent *event = [self findEventWithTitle:title inEventStore:store];
   
       // if found, use it
   
       if (event)
           return event;
   
       // if not, let's create new event
   
       event = [EKEvent eventWithEventStore:store];
   
       event.title = title;
       event.notes = @"My event notes";
       event.location = @"My event location";
       event.calendar = [store defaultCalendarForNewEvents];
   
       NSCalendar *calendar = [NSCalendar currentCalendar];
       NSDateComponents *components = [[NSDateComponents alloc] init];
       components.hour = 4;
       event.startDate = [calendar dateByAddingComponents:components
                                                   toDate:[NSDate date]
                                                  options:0];
       components.hour = 1;
       event.endDate = [calendar dateByAddingComponents:components
                                                 toDate:event.startDate
                                                options:0];
   
       return event;
   }
   
   - (EKEvent *)findEventWithTitle:(NSString *)title inEventStore:(EKEventStore *)store
   {
       // Get the appropriate calendar
       NSCalendar *calendar = [NSCalendar currentCalendar];
   
       // Create the start range date components
       NSDateComponents *oneDayAgoComponents = [[NSDateComponents alloc] init];
       oneDayAgoComponents.day = -1;
       NSDate *oneDayAgo = [calendar dateByAddingComponents:oneDayAgoComponents
                                                     toDate:[NSDate date]
                                                    options:0];
   
       // Create the end range date components
       NSDateComponents *oneWeekFromNowComponents = [[NSDateComponents alloc] init];
       oneWeekFromNowComponents.day = 7;
       NSDate *oneWeekFromNow = [calendar dateByAddingComponents:oneWeekFromNowComponents
                                                          toDate:[NSDate date]
                                                         options:0];
   
       // Create the predicate from the event store's instance method
       NSPredicate *predicate = [store predicateForEventsWithStartDate:oneDayAgo
                                                               endDate:oneWeekFromNow
                                                             calendars:nil];
   
       // Fetch all events that match the predicate
       NSArray *events = [store eventsMatchingPredicate:predicate];
   
       for (EKEvent *event in events)
       {
           if ([title isEqualToString:event.title])
           {
               return event;
           }
       }
   
       return nil;
   }
   

Create event based on dates in a text field

To add an event programmatically, read Apple's Event Kit Programming Guide. Maybe you want to make it easier on yourself by using an EKEventViewController, but you can do everything in code as well.

To transform an NSString from the text property of your text field into an NSDate you will have to use an NSDateFormatter. There are good examples in the class documentation.

iOS - Add custom URI of our app to the event stored in calendar programmatically

You are very close ;-) . Assuming you have defined your custom URL scheme in your .plist, add a 'host' and 'path' to your custom URL scheme being placed in event.notes. (eg. myapp://myhost/mypath) Then something like...

-(BOOL)application:(UIApplication*)application handleOpenURL:(NSURL*)url { - deprecated
-(BOOL) application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {

    if (!url) {
        return NO;
    }

    if([[url host] isEqualToString:@"myhost"])
    {
        //can also check [url path] if you want to
        //do whatever
    }

    return YES;
}

PS: deprecated method worked for me with iOS6/7, haven't tried new method.

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