如果我想EKEvent
从EKEventStore
witheventWithIdentifier
方法中检索以前保存的事件,但我总是得到空值。
这是添加事件的代码:
EKEventStore *eventStore = [[EKEventStore alloc] init];
EKEvent *newEvent = [EKEvent eventWithEventStore:eventStore];
newEvent.title = @"Test";
newEvent.availability = EKEventAvailabilityFree;
newEvent.startDate = startDate;
newEvent.endDate = endDate;
[newEvent addAlarm:[EKAlarm alarmWithRelativeOffset:-15*60]];
newEvent.calendar = [eventStore defaultCalendarForNewEvents];
NSError *err;
BOOL success = [eventStore saveEvent:newEvent span:EKSpanThisEvent commit:YES error:&err];
if (success) {
if ([newEvent respondsToSelector:@selector(calendarItemIdentifier)]) {
[[NSUserDefaults standardUserDefaults] setObject:newEvent.calendarItemIdentifier forKey:self.showId];
NSLog(@"Event ID: %@",newEvent.calendarItemIdentifier);
}
else {
[[NSUserDefaults standardUserDefaults] setObject:newEvent.UUID forKey:self.showId];
NSLog(@"Event ID: %@",newEvent.UUID);
}
}
以及删除事件的代码:
EKEventStore *eventStore = [[EKEventStore alloc] init];
NSError *err;
BOOL success = YES;
NSLog(@"Event ID: %@",[[NSUserDefaults standardUserDefaults] objectForKey:self.showId]);
EKEvent *existingEvent = [eventStore eventWithIdentifier:[[NSUserDefaults standardUserDefaults] objectForKey:self.showId]];
NSLog(@"Existing event: %@",existingEvent);
if (existingEvent != nil) {
success = [eventStore removeEvent:existingEvent span:EKSpanThisEvent error:&err];
}
if (success) {
[[NSUserDefaults standardUserDefaults] removeObjectForKey:self.showId];
}
为什么我无法从具有相同事件 ID 的日历中删除之前添加的事件?
此代码已在 iOS 5(iPad 1)和 iOS 6(新 iPad)上测试...