iphone - 如何从 NSMutableDictionary 中删除字典数组？

Question

我有数组字典(里面还有数组和字典)。

我在我的 UITableView 中添加了 UITableViewCellEditingStyleDelete，所以我想从字典中删除特定的字典数组。

数据的控制台 View :

{
        A =     (
                   {
                    address = "Talala (gir)";
                    "main_id" = 1;
                    mobile = 8878876884;
                    name = "Amit Patel";
                   },
                   {
                    address = "Junagdh";
                    "main_id" = 5;
                    mobile = 4894679865;
                    name = "Arjun Patel";
                   }
                );
            J = (
                    {
                    address = "Taveli";
                    "main_id" = 6;
                    mobile = 87886356085878;
                    name = "Jasmin Patel";
                    },
                    {
                    address = "Gujarat";
                    "main_id" = 4;
                    mobile = 6636633368;
                    name = "Jatin ";
                   }
               );
            R =     (
                        {
                    address = "Mumbai";
                    "main_id" = 2;
                    mobile = 999686322;
                    name = "Rajan Patel";
                }
            );
            S =     (
                        {
                    address = "Rajkot";
                    "main_id" = 3;
                    mobile = 8866086549;
                    name = "Sumit Patel";
                }
            );
        }

我想删除，例如:数组的索引是1，来自键为A的字典

我必须尝试使用​​以下代码

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete)
    {

        NSDictionary *dic = [[self.finalPDic objectForKey:[self.listOfHeader objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];

        NSLog(@"%@",dic);

        [self.finalPDic removeObjectForKey:dic];

        NSLog(@"%@",self.finalPDic);

        [self.tblView reloadData];
    }
    if (editingStyle == UITableViewCellEditingStyleInsert)
    {
    }
}

但是我无法从主 NSMutableDictionary 中删除任何记录。

Answer 1

试试这个

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete)
    {
        NSString *key = self.listOfHeader[indexPath.section];

        NSMutableArray *users = [self.finalPDic[key] mutableCopy];

        [users removeObjectAtIndex:indexPath.row];
        if (users){
          self.finalDic[key] = users;
        }else{
        [self.finalDic removeObjectForKey:key];
        }
        [self.tblView reloadRowsAtIndexPaths:@[indexPath]
                                withRowAnimation:UITableViewRowAnimationAutomatic];
    }
    if (editingStyle == UITableViewCellEditingStyleInsert){
    }
}