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ios - 如何检查输入的电子邮件是电子邮件格式

转载 作者：搜寻专家 更新时间：2023-11-01 06:06:20 36 4
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<分区>

如何检查输入的邮件是否格式正确。比如 somename@gmail.com 或任何。

这是我的代码。我试过了，但我的 if 语句出现错误

import UIKit

extension String {
    func matchPattern(patStr:String)->Bool {
        var isMatch:Bool = false
        do {
            let regex = try NSRegularExpression(pattern: patStr, options: [.CaseInsensitive])
            let result = regex.firstMatchInString(self, options: NSMatchingOptions(rawValue: 0), range: NSMakeRange(0, characters.count))

            if (result != nil)
            {
                isMatch = true
            }
        }
        catch {
            isMatch = false
        }
        return isMatch
    }
}

class RegisterVC: UIViewController {



    @IBOutlet weak var EmailField: UITextField!


    @IBOutlet weak var LocationField: UITextField!

    @IBOutlet weak var userNameField: UITextField!



    @IBOutlet weak var passWordField: UITextField!



    @IBOutlet weak var confirmPasswordField: UITextField!
override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
@IBAction func SignUpBtnPress(sender: AnyObject) {
        let Email:NSString = EmailField.text!
        let Location:NSString = LocationField.text!
        let username:NSString = userNameField.text!
        let password:NSString = passWordField.text!
        let confirm_password:NSString = confirmPasswordField.text!

        if (Email.matchPattern("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,4}$")==true)
        {
            print("this is e-mail!")
        }

        else if ( Email.isEqualToString("") || Location.isEqualToString("") || username.isEqualToString("") || password.isEqualToString("") || confirm_password.isEqualToString("") ) {


            let alertController = UIAlertController(title: "Alert", message: "All Field Are Mnditory.", preferredStyle: UIAlertControllerStyle.Alert)
            let DestructiveAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default) { (result : UIAlertAction) -> Void in
                print("Settings")
            }

            alertController.addAction(DestructiveAction)

            self.presentViewController(alertController, animated: true, completion: nil)



        } else if ( !password.isEqual(confirm_password) ) {

            let alertController = UIAlertController(title: "Alert", message: "Password Din't Match.", preferredStyle: UIAlertControllerStyle.Alert)
            let DestructiveAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default) { (result : UIAlertAction) -> Void in
                print("Password Din't Match")
            }

            alertController.addAction(DestructiveAction)

            self.presentViewController(alertController, animated: true, completion: nil)

        }




        print("login sucess")
}

我需要的是，如果任何用户开始绑定(bind)电子邮件 ID 的格式错误，我需要显示警报。

谢谢

36 4 0
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