通知

訂閱通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(eventStoreChanged:) name:EKEventStoreChangedNotification object:nil];

發送通知

- (void)eventStoreChanged:(NSNotification *)note
{
  [[NSNotificationCenter defaultCenter] postNotificationName:KalDataSourceChangedNotification object:nil];
}