UISearchBar - 删除行

Question

我使用 tableview 并使用 UISearchBar 来搜索它。当我必须删除一行时，我使用以下代码：

- (void)tableView:(UITableView *)tv commitEditingStyle:(UITableViewCellEditingStyle)editingStyle 
forRowAtIndexPath:(NSIndexPath *)indexPath {

    if(editingStyle == UITableViewCellEditingStyleDelete) {

//Get the object to delete from the array.

    Coffee *coffeeObj = nil;

    if (tv == self.searchDisplayController.searchResultsTableView)
    {
        coffeeObj = [appDelegate.coffeeArrayFiltered objectAtIndex:indexPath.row];
    }
    else
    {
        coffeeObj = [appDelegate.coffeeArray objectAtIndex:indexPath.row];
    }


    appDelegate.countRowNumber -= 1;
    NSString *txtmessage2an = [NSString stringWithFormat:@"%@", coffeeObj.price];
    float priceFn = [txtmessage2an floatValue];
    NSString *txtmessage3a = [NSString stringWithFormat:@"%0.2f", priceFn];
    float stringDouble1 = [txtmessage3a floatValue];
    float stringDouble2 = appDelegate.countPriceNumber;
    float stringDoubleSum = stringDouble2 - stringDouble1;
    appDelegate.countPriceNumber = stringDoubleSum;
    [appDelegate removeCoffee:coffeeObj];

    //Delete the object from the table.

            [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
            [self.tableView reloadData];

    if([appDelegate.searchTerm isEqualToString:@"!"]){
        NSLog(@"Not in search...");
    }
    else
    {
        NSLog(appDelegate.searchTerm);
        [self.searchDisplayController.searchBar setText:appDelegate.searchTerm];
    }
}
}

基本上它可以工作，但是当 [self.searchDisplayController.searchBar setText:appDelegate.searchTerm];被调用，然后我收到以下错误：

2012-01-05 15:36:05.769 iTaxFriend[9261:707] -[NSIndexPath getCharacters:range:]: 无法识别的选择器发送到实例 0x3ab490 2012-01-05 15:36:05.771 iTaxFriend[9261:707] *** 终止应用程序到期 未捕获异常“NSInvalidArgumentException”，原因： '-[NSIndexPath getCharacters:range:]: 发送到的无法识别的选择器 实例0x3ab490'

我调用 [self.searchDisplayController.searchBar setText:appDelegate.searchTerm]; 来刷新 UISearch 结果。当我注释这一行并手动执行此操作，在搜索字段中重新键入时，它正在工作而不会崩溃！

有什么想法如何刷新结果吗？