gistfile1.m

- (void)addEvent
{
    CLLocation *location = [locationManager location];
    if (!location) {
        return;
    }
    
    Event *event = (Event *)[NSEntityDescription insertNewObjectForEntityForName:@"Event"
                                                          inManagedObjectContext:managedObjectContext];
    
    CLLocationCoordinate2D coordinate = [location coordinate];
    [event setLatitude:[NSNumber numberWithDouble:coordinate.latitude]];
    [event setLongitiude:[NSNumber numberWithDouble:coordinate.longitude]];
    [event setCreationDate:[NSDate date]];
    
    NSError *error = nil;
    if (![managedObjectContext save:&error]) {
        // Handle the error.
    }
    
    [eventsArray insertObject:event atIndex:0];
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
    [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] 
                          withRowAnimation:UITableViewRowAnimationFade];
    [self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
                          atScrollPosition:UITableViewScrollPositionTop
                                  animated:YES];
}