Question

我有一个UITableViewCell，其文本字段应该是DatePicker。我需要制作一个自定义按钮来保存日期。但每当我选择任何UITableViewCell TextField时，都会出现按钮。这是为什么？

我只是想把它“提交”到文本字段，这样我就可以保存它。

由于

    - (void)textFieldDidBeginEditing:(UITextField *)dateFieldText
{    

    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]
                                   initWithTitle:@"Save Date"
                                   style:UIBarButtonItemStyleDone
                                   target:self
                                   action:@selector(flipView)];
    self.navigationItem.rightBarButtonItem = doneButton;
    UIDatePicker *datePicker = [[UIDatePicker alloc] init];
    datePicker.datePickerMode = UIDatePickerModeDateAndTime;
    [datePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged];
    [self.dateFieldText setInputView:datePicker];


}

更新

使用if else阻止解决了我的问题。

- (void)textFieldDidBeginEditing:(UITextField *)sender
{
    sender.delegate = self;
        if([sender isEqual:dateFieldText])
        {
            UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]
                                           initWithTitle:@"Save"
                                           style:UIBarButtonItemStyleDone
                                           target:self
                                           action:@selector(saveDate)];
            self.navigationItem.rightBarButtonItem = doneButton;
            UIDatePicker *datePicker = [[UIDatePicker alloc] init];
            datePicker.datePickerMode = UIDatePickerModeDateAndTime;
            [datePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged];
            [self.dateFieldText setInputView:datePicker];
        }
        else{
            UIBarButtonItem *submitButton = [[UIBarButtonItem alloc]
                                           initWithTitle:@"Done"
                                           style:UIBarButtonItemStyleDone
                                           target:self
                                           action:@selector(submitList)];
            self.navigationItem.rightBarButtonItem = submitButton;
        }  
    }

感谢您的帮助。

Answer 1

您是否在重复使用表格视图？您可以考虑为日期字段创建一个新单元格，并为其提供与其他单元格不同的重用标识符。

Answer 2

你应该将datePicker设置为预期的文本字段i.f你应该添加一个if条件，只将datePicker添加到所需的字段，而不是所有的字段。

Answer 3

- (void)textFieldDidBeginEditing:(UITextField *)sender
{
    sender.delegate = self;
        if([sender isEqual:dateFieldText])
        {
            UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]
                                           initWithTitle:@"Save"
                                           style:UIBarButtonItemStyleDone
                                           target:self
                                           action:@selector(saveDate)];
            self.navigationItem.rightBarButtonItem = doneButton;
            UIDatePicker *datePicker = [[UIDatePicker alloc] init];
            datePicker.datePickerMode = UIDatePickerModeDateAndTime;
            [datePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged];
            [self.dateFieldText setInputView:datePicker];
        }
        else{
            UIBarButtonItem *submitButton = [[UIBarButtonItem alloc]
                                           initWithTitle:@"Done"
                                           style:UIBarButtonItemStyleDone
                                           target:self
                                           action:@selector(submitList)];
            self.navigationItem.rightBarButtonItem = submitButton;
        }  
    }

为什么此按钮出现在所有UITextField选项中？

3 个答案: