同步iPhone日历事件删除与事件存储在应用程序

Question

我有一个问题，如果我通过应用程序在日历中添加事件，如果从simuloter日历删除按钮添加事件。那么它也会从应用程序中删除，这可能吗？ 感谢

Answer 1

我张贴在这里粗略的算法，同步与存储在您的应用程序事件的iCal事件：

//model class for DB Events 
@interface EventEntity 

@property(strong) NSString *eventID; 
@property(strong) NSString *eventText; 

@end 

NSMutableArray *dbEvents; //array of EventEntity objects 
NSArray *iCalEvents; //array of events fetched from iCal 

NSMutableArray *eventsToDelete = [NSMutableArray array]; //We will add events in this array, needed to be deleted from db. 

for(EventEntity *entity in dbEvents) { 
    bool found = NO; //to keep track if this event has been found in iCal or not 

for(EkEvent *event in iCalEvents) { 
    if([event.eventidentifier isEqualToString:entity.eventID]) { 
    found = YES; //event is present in Cal. Ignore and break 
     break; 
    } 
} 

    if(!found) { //If not found, it means event has been deleted from iCal. Remove it from DB. 
    [eventsToDelete addObject:entity]; 
    } 
} 

//Now delete items one by one from db 
for(EventEntity *entity in eventsToDelete) { 

//make query something like this: Delete event where EventID = entity.eventID 

//after successful deletion, remove from dbEvents 
[dbEvents removeObject:entity]; 
} 

//refresh your UI for calendar/events if needed. 

希望它能帮助！