我想从我的应用程序打开 native IOS 日历 (ical) 并添加事件。 有什么方法可以打开特定事件的日历吗？

我也关注Open iphone calendar app programmatically但还没有成功。

最佳答案

参见 Calendar and Reminders Programming Guide .但基本流程是:

1. 将 EventKit.Framework 和 EventKitUI.Framework 添加到您的项目中。 (参见 Linking to a Library or Framework。)

2. 导入标题:

   #import <EventKitUI/EventKitUI.h>
   

3. 如果创建一个事件，您使用:

   - (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. 您的 View Controller 应符合 EKEventEditViewDelegate 协议(protocol):

   @interface ViewController () <EKEventEditViewDelegate>
   

   并实现didCompleteWithAction方法:

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

5. 显然，您可以按照自己的方式创建事件。例如，这是在下周查找具有适当标题的事件，如果没有找到，则创建一个新事件(四小时后开始的一小时长的事件):

   - (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;
   }
   

关于ios - 如何在原生 IOS 日历中添加事件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15742231/