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我正在尝试从特定日历中仅获取事件。在我的iPhone上,我添加了一个日历“CalendarTest”。我想要做的是在我的应用程序只从该日历中获取事件。我正在做以下事情。从IOS中的特定日历中获取事件
self.defaultCalendar = [eventStore calendarWithIdentifier:@"CalendarTest"];
NSArray *calendarArray = [NSArray arrayWithObject:defaultCalendar];
// asynchronous callback on the main thread
[events removeAllObjects];
NSLog(@"Fetching events from EventKit between %@ and %@ on a GCD-managed background thread...", fromDate, toDate);
dispatch_async(eventStoreQueue, ^{
NSDate *fetchProfilerStart = [NSDate date];
NSPredicate *predicate = [eventStore predicateForEventsWithStartDate:fromDate endDate:toDate calendars:calendarArray];
NSArray *matchedEvents = [eventStore eventsMatchingPredicate:predicate];
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"Fetched %d events in %f seconds", [matchedEvents count], -1.f * [fetchProfilerStart timeIntervalSinceNow]);
[events addObjectsFromArray:matchedEvents];
[delegate loadedDataSource:self];
});
});
但是,当我建立和运行我得到以下错误它崩溃与以下错误。
2012-11-20 11:45:35.445 CalendarApp[2685:1d03] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]'
有人有想法吗?亲切的问候!
你能看到任何nslog输出吗? – jimpic
不,它在这行崩溃NSArray * calendarArray = [NSArray arrayWithObject:_defaultCalendar]; – Steaphann
然后就是没有日历标识符“CalendarTest” – jimpic