objective-c - uitableviewにテキストフィールドを追加する場合、textfieldはそのデリゲートメソッドを呼び出しません

Question

このコードを使用している場合、はそのメソッドUITextFieldを呼び出しません。delegateこのコードでは、にを追加しUITextFieldていUITableViewます。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{  
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];

        if (cell == nil)
        {          
            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:nil];
            cell.accessoryType = UITableViewCellAccessoryNone;

            if (indexPath.row!=7) 
            {

            [cell.textLabel setTextColor:[UIColor blackColor]];
            [cell.textLabel setTextColor:[UIColor blackColor]];

            //Creating Lable

            UILabel *lblText= [[UILabel alloc]  initWithFrame:CGRectMake(53, 30, 150, 35)];


            [lblText setFont:[UIFont boldSystemFontOfSize:15.0]];
            lblText.backgroundColor=[UIColor clearColor];

            lblText.textColor=[UIColor blackColor];


            lblText.text = [labelArray objectAtIndex:indexPath.row];



            //creating a the textField 

            UITextField *txtField = [[UITextField alloc] init];
            [txtField setFrame:CGRectMake(50, 56, 220, 31)];

            [txtField setBackgroundColor:[UIColor whiteColor]];


            [txtField setBorderStyle:UITextBorderStyleRoundedRect];
            txtField.delegate=self;
            [txtField setFont:[UIFont systemFontOfSize:14.0]];
            txtField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
                txtField.userInteractionEnabled=YES;
                txtField.enabled=YES;                


            if (indexPath.row==2)
            {
                txtField.keyboardType=UIKeyboardTypeNumbersAndPunctuation;
            }
            else if(indexPath.row==3)
            {
                txtField.keyboardType=UIKeyboardTypeEmailAddress;

            }else
                {

                    txtField.keyboardType=UIKeyboardTypeDefault;

                }

                if (indexPath.row==6 ||indexPath.row==5) 
                {
                    [txtField setSecureTextEntry:YES];
                }

            txtField.tag=indexPath.row;
            [cell addSubview:txtField];

            [cell addSubview:lblText];  
        } 
    }

    return cell;
}