编辑UITableviewCell--Editing

    self.navigationItem.rightBarButtonItem = self.editButtonItem;

- (void)setEditing:(BOOL)editing animated:(BOOL)animated
{
    [super setEditing:editing animated:animated];
    [self.countriesTableView setEditing:editing animated:animated];
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        Country * delegateCountry = self.countries[indexPath.row];
        [self.countries removeObject:delegateCountry];
        
        [self.countriesTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
    }
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if ((indexPath.row%2) == 0) {
        return UITableViewCellEditingStyleInsert;
    }
    return UITableViewCellEditingStyleDelete;
}

}else if (editingStyle == UITableViewCellEditingStyleInsert){
        Country * copiedCountry = self.countries[indexPath.row];
        Country * newCountry = [[Country alloc] init];
        newCountry.name = copiedCountry.name;
        newCountry.flag = copiedCountry.flag;
        newCountry.capital = copiedCountry.capital;
        newCountry.motto = copiedCountry.motto;
        [self.countries insertObject:newCountry atIndex:indexPath.row+1];
        [self.countriesTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:indexPath.row + 1 inSection:indexPath.section]] withRowAnimation:UITableViewRowAnimationRight];
    }

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    return YES;
}

- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
    [self.countries exchangeObjectAtIndex:sourceIndexPath.row withObjectAtIndex:destinationIndexPath.row];
    [self.countriesTableView reloadData];
}