Question

我想在UItable视图单元格上验证emailId。所以我已经这样做了：

   let cell = (tableView.dequeueReusableCellWithIdentifier("QuestionWithEmailField", forIndexPath: indexPath) as? QuestionWithEmailField)!

            cell.model = model
            cell.indexPath = indexPath
            cell.TexitFieldEmail.delegate = self
            cell.lblEmail.text = model.labelText
            return cell

此单元格用于电子邮件，还有其他单元格用于电话号码和邮政编码。不同类型的字段有不同的单元格。现在我如何验证Emailand使用 DidEndEditingTextField 。

在我的QuestionWithEmailField.swift中，我已经这样做了：

 @IBOutlet weak var lblEmail: UILabel!

@IBOutlet weak var TexitFieldEmail: UITextField!

  override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }
//email validations functions
func isValidEmail(testStr:String) -> Bool
{
    let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
    let range = testStr.rangeOfString(emailRegEx, options:.RegularExpressionSearch)
    let result = range != nil ? true : false
    return result
}

@IBAction func DidEndEditingTextField(sender: AnyObject) {

    let validEmailAddress = isValidEmail(TexitFieldEmail.text!)
    if validEmailAddress
    {
     print("Valid Email Address")
    }
    else{
        print("InvalidAddrss")
    }

}

但我无法验证此UITextField的电子邮件。现在我想在按下发送按钮后验证该字段。我可以这样做吗?? ??

Answer 1

您只需要在包含该文本字段的TableviewCell内进行验证。

您可能会注意到在键盘上按didEndEditing时将不会调用return。因此，您必须使用textFieldShouldReturn中的UITextFieldDelegate来触发didEndEditing。

extension String {
    var isEmail: Bool {
        do {
           let regex = try NSRegularExpression(pattern:"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}", options: .caseInsensitive)
           return regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.characters.count)) != nil
        }
       catch {
          return false
       }
    }
}


class TextFieldTableViewCell: UITableViewCell, UITextFieldDelegate {

    @IBOutlet weak var textField: UITextField!
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
        textField.delegate = self
    }

    @IBAction func didEndEditing(_ sender: UITextField) {
        if sender.text!.isEmail {
            print("YES")
        } else {
            print("NO")
        }
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        self.endEditing(true)
        return false
    }

}

电子邮件的UITable视图单元验证

1 个答案: