Question

在我看来，我面临一个独特的问题，我已经提到了以下链接 link 1＆amp; link 2 已经但我无法完全解决我的问题，所以在这里发布我的查询。我正在使用11种不同类型的原型单元实现40行的UITableview。其中一个原型单元有一个UILabel和一个UITextfield。现在因为我正在使用标识符重用这个原型单元格，我想做以下事情：对于单击文本字段的第0行，我想显示一个datepicker视图。对于第1行单击文本字段我想进行正常编辑。对于单击文本字段的第2行，我想进行正常编辑。对于单击文本字段的第3行，我想显示选择器视图。并且对于特定行重复类似的模式。我的问题在于如何获取有关委托传递给哪一行的信息。这是我的代码：

if (0 == indexPath.row)
    {
            cellIdentifier = @"CellLabelText";
            cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
            cellLabel = (UILabel *)[cell viewWithTag:101];
            cellLabel.text = [self.modelDataObj.labelTextArray objectAtIndex:indexPath.row];
            textField1 = (UITextField *)[cell viewWithTag:102];
            rowNum = indexPath.row;
            textField1.delegate = self;
            /*  
             placeholder text value is current date set (TBD)
             */

        }
        else if ((1 == indexPath.row) ||(2 == indexPath.row)||(3 == indexPath.row)||
                 (4 == indexPath.row) ||(6 == indexPath.row)||(10 == indexPath.row)||
                 (11 == indexPath.row)||(28 == indexPath.row)||(41 == indexPath.row))
        {
            cellIdentifier = @"CellLabelText";
            cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
            cellLabel = (UILabel *)[cell viewWithTag:101];
            cellLabel.text = [self.modelDataObj.labelTextArray objectAtIndex:indexPath.row];
            rowNum = indexPath.row;
            switch (indexPath.row) {
                case 1:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 2:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 3:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 4:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 6:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 10:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 11:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                case 41:

                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;

                case 28:
                            textField1 = (UITextField *)[cell viewWithTag:102];
                            textField1.delegate = self;
                            break;
                default:
                    break;
            }
        }

这是我的textShouldBeginEditing方法代码：

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    [textField resignFirstResponder];
    NSLog(@"In textFieldShouldBeginEditing");
    BOOL finalReturn;
    NSLog(@"row selected is %d", rowNum);
    UIViewController *vc = [[UIViewController alloc] init];
    UINavigationController *navc = [[UINavigationController alloc] initWithRootViewController:vc];

    if (0 == rowNum)//)
    {
        UIDatePicker *datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(5, 5, 300, 600)];
        datePicker.datePickerMode = UIDatePickerModeDate;
        datePicker.hidden = NO;
        datePicker.date = [NSDate date];
        [datePicker addTarget:self
                    action:@selector(changeDateInLabel:)
                    forControlEvents:UIControlEventValueChanged];

        [self.view addSubview:datePicker];

        UIBarButtonItem *donebtn = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissPopoverAnimated:)];

        vc.navigationItem.rightBarButtonItem  = [[UIBarButtonItem alloc] init];
        [vc.navigationItem setRightBarButtonItem:donebtn animated:NO];
        [vc.view setBackgroundColor:[UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0]];
        [vc.view addSubview:datePicker];

        self.popvc = [[UIPopoverController alloc] initWithContentViewController:navc];

        [self.popvc setPopoverContentSize:CGSizeMake(datePicker.bounds.size.width+(datePicker.frame.origin.y*2),250+(datePicker.frame.origin.x*2))];
            //NSLog(@"Height of the picker view while embedding in popover %f", pickerView.bounds.size.height);

        [self.popvc presentPopoverFromRect:textField.frame inView:textField.superview permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

        finalReturn = NO;
    }
    else if ((1 == rowNum) || (2 == rowNum))
    {
        finalReturn = YES;
    }
    else
    {
    finalReturn = YES;
    }
return finalReturn;
}

问题是rowNum被设置为当前可见且已执行satement的行的值。因此，如果在第12行期间发生了对rowNum赋值的最后一个语句，我将无法使用它来为textFieldShouldBeginEditing中的第0行触发一个日期选择器，因为当它设置为0时，没有单击textfield并且当它被单击时rowNum被设定为12左右。基本上我如何为第0行触发一个日期选择器，为第3行触发uipicker，对第1行和第1行进行正常编辑。 2等等。我无法解决问题，我仍在尝试各种角度。非常感谢任何帮助。

Answer 1

在textFieldShouldBeginEditing中，尝试获取textField的superview，它是表视图单元格的内容视图，并获取其superview，它应该是一个表视图单元格。

之后，您可以找到该特定表视图单元格的indexPath，并根据indexPath行确定要显示的内容。

如何在tableview中的不同条件下单击文本字段时显示日期选择器，uipickerview和常规键盘编辑？

1 个答案: