Question

我有一个自定义的tableview单元格，其中包含文本字段和两个标签

TableViewCell：

@interface CartTableViewCell : UITableViewCell

@property (weak, nonatomic) IBOutlet UILabel *proCost;
@property (weak, nonatomic) IBOutlet UITextField *txtQtyCount;
@property (weak, nonatomic) IBOutlet UILabel *lblTotalCost;

@end

ViewController.h

@interface CartViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,UITextFieldDelegate,UITabBarControllerDelegate>
@property (weak, nonatomic) IBOutlet UITableView *tblView;
@end

ViewController.m

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
CGPoint origin = textField.frame.origin;
    CGPoint point = [textField.superview convertPoint:origin toView:self.tblView];

    NSIndexPath * indexPath = [self.tblView indexPathForRowAtPoint:point];
    NSLog(@"%ld",(long)cartCell.txtQtyCount.tag);
    [self.tblView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];

    qty = cartCell.txtQtyCount.text;
    quanty = [qty doubleValue];
    double qua = price * quanty;
    qtotal =[[NSString alloc] initWithFormat:@"%.2f",qua];
    [dictionary setObject:qtotal forKey:@"qtotal"];
    [dictionary setObject:qty forKey:@"qty"];

    [self.tblView beginUpdates];
   NSArray *indexPaths = [[NSArray alloc] initWithObjects:indexPath, nil];
    [self.tblView reloadRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationNone];
  [self.tblView endUpdates];
    [cartCell.txtQtyCount resignFirstResponder];

    return YES;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{


    cartCell =[self.tblView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    NSDictionary *tmpDict = [myObject objectAtIndex:indexPath.row];
    NSMutableString *name;
    name = [NSMutableString stringWithFormat:@"%@ ",
              [tmpDict objectForKey:@"name"]];


    qty = [NSMutableString stringWithFormat:@"%@ ",
             [tmpDict objectForKey:@"qty"]];

    NSString *qtot = [NSString stringWithFormat:@"%@",[tmpDict objectForKey:@"qtotal"]];


    NSMutableString *qcost;
    qcost = [NSMutableString stringWithFormat:@"%@ ",
                [tmpDict objectForKey:@"total"]];

    cartCell.txtQtyCount.tag = indexPath.row;
    cartCell.proCost.text = qcost;
    cartCell.txtQtyCount.text = qty;
    cartCell.lblTotalCost.text = qtot;
}

实际上我有一个proCost，其中包含一个双倍值txtQtyCount，我可以更新数量，以便我将价格与数量相乘，并希望将相乘值保存在{{1}中}。我不清楚如何获取已编辑行的值（索引路径）。

Answer 1

只需查看更新的数据源数组（myObject），即可检索所需的任何值。

显然你需要保持更新，所以当用户输入新数量时，请确保以相应的索引更新“qty”tmpDict。

Answer 2

对此有类似的问题。我认为我真正需要的是正确单元格中该视图的indexPath

所以..我做了一个UITakeView category并且有这样的方法：

 -(NSIndexPath *)indexPathForCellContaininView:(UIView *)view
    {
        while (view != nil){

            if ([view isKindOfClass:[UITableViewCell class]]){

                    return [self indexPathForCell:(UITableViewCell *)view];
            }else {
                        view = [view superview];
            }
        }

        return nil;
    }

然后你可以在对你的用例有意义的UITextFields代表中使用它 - 启用：

-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSIndexPath *indexPath = [self.tableView indexPathForCellContaininView:textField];

/// do something with the index path - you have the exact cell / uitextfield being edited // 

return YES; 
}

自定义表格视图单元格中的可编辑文本字段

2 个答案: