从 EkCalendar 获取过去的事件 iOS

Question

我正在尝试从特定日历 (EkCalendar) 中获取过去的事件，但我可以获得的最早事件是 1 年前的。有没有办法获取超过一年的事件？

注意关于这个主题有一些问题，但答案不是很清楚或似乎不起作用。例如：Past events in EKCalendar

谢谢

Answer 1

我终于找到了解决办法，也找到了无法获取往事的原因。显然，iOS 不允许在超过 4 年的谓词上获取事件。

这里是答案： Fetch all events from EventStore EventKit iOS

NSDate *start = [[NSCalendar currentCalendar] dateByAddingComponents:dateComponents toDate:currentDate options:0];
NSDate *finish = [NSDate new];
NSArray *calendarArray = [NSArray arrayWithObject:calendar];


NSMutableDictionary *dicEvents = [NSMutableDictionary dictionaryWithCapacity:1024];

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

int seconds_in_year = 60 * 60 * 24 * 365;

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 = [self.eventStore predicateForEventsWithStartDate:currentStart endDate:currentFinish calendars:calendarArray];
    [self.eventStore enumerateEventsMatchingPredicate:predicate
                                           usingBlock: ^(EKEvent *event, BOOL *stop) {
                                               if (event) {
                                                   [dicEvents setObject:event forKey:event.eventIdentifier];
                                               }
                                           }];
    currentStart = [NSDate dateWithTimeInterval:(seconds_in_year + 1) sinceDate:currentStart];
}
return [dicEvents allValues];

从 EkCalendar 获取过去的事件 iOS

Get past events from an EkCalendar iOS

nsdate

ios