如何从我的iphone日历中检索事件

Question

如果可能的话，我想问一下如何做。你能给我一些关于如何做到这一点的示例代码或片段吗？谢谢

Answer 1

您需要查看事件工具包，其中包含示例代码以及读取日历事件的文档。

Answer 2

获取所有事件的代码。有关更多信息，您可以使用上面的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];