如何从我的iphone日历中检索事件？

Question

我想问一下如果可能，怎么做。 你可以给我一些示例代码或片段如何做到这一点？谢谢。

Answer 1

你想看看Event Kit，它有示例代码以及有关阅读日历事件的文档。

Answer 2

获取所有事件的代码。有关更多信息，可以使用上述Event Kit苹果文档。

NSDate *start = ... 
NSDate *finish = ... 

// use Dictionary for remove duplicates produced by events covered more one year segment 
NSMutableDictionary *eventsDict = [NSMutableDictionary dictionaryWithCapacity:1024]; 

NSDate* currentStart = [NSDate dateWithTimeInterval:0 sinceDate:start]; 

int seconds_in_year = 60*60*24*365; 

// enumerate events by one year segment because iOS do not support predicate longer than 4 year ! 
while ([currentStart compare:finish] == NSOrderedAscending) { 

    NSDate* currentFinish = [NSDate dateWithTimeInterval:seconds_in_year sinceDate:currentStart]; 

    if ([currentFinish compare:finish] == NSOrderedDescending) { 
     currentFinish = [NSDate dateWithTimeInterval:0 sinceDate:finish]; 
    } 
    NSPredicate *predicate = [eventStore predicateForEventsWithStartDate:currentStart endDate:currentFinish calendars:nil]; 
    [eventStore enumerateEventsMatchingPredicate:predicate 
             usingBlock:^(EKEvent *event, BOOL *stop) { 

              if (event) { 
               [eventsDict setObject:event forKey:event.eventIdentifier]; 
              } 

             }];  
    currentStart = [NSDate dateWithTimeInterval:(seconds_in_year + 1) sinceDate:currentStart]; 

} 

NSArray *events = [eventsDict allValues];