Ios 如何检查输入的电子邮件是否为电子邮件格式
如何检查输入的电子邮件是否正确。喜欢somename@gmail.com或者任何 这是我的代码。我试过了,但在if语句中出现了错误Ios 如何检查输入的电子邮件是否为电子邮件格式,ios,regex,swift,email,Ios,Regex,Swift,Email,如何检查输入的电子邮件是否正确。喜欢somename@gmail.com或者任何 这是我的代码。我试过了,但在if语句中出现了错误 import UIKit extension String { func matchPattern(patStr:String)->Bool { var isMatch:Bool = false do { let regex = try NSRegularExpression(pattern:
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,如果任何用户开始使用错误格式绑定电子邮件id,我需要显示警报
谢谢你可以试试这个
-(BOOL)isValidEmailAddress:(NSString *)email
{
BOOL stricterFilter = YES;
NSString *stricterFilterString = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSString *laxString = @".+@.+\\.[A-Za-z]{2}[A-Za-z]*";
NSString *emailRegex = stricterFilter ? stricterFilterString:laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
快速版本
func isValidEmail(testStr:String) -> Bool {
println("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
var emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
var result = emailTest?.evaluateWithObject(testStr)
return result!
}
电子邮件验证的使用:
if isValidEmail(textField.text)
{
println("Validate EmailID")
}
else
{
println("invalide EmailID")
}
更多信息您可以试试这个
-(BOOL)isValidEmailAddress:(NSString *)email
{
BOOL stricterFilter = YES;
NSString *stricterFilterString = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSString *laxString = @".+@.+\\.[A-Za-z]{2}[A-Za-z]*";
NSString *emailRegex = stricterFilter ? stricterFilterString:laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
快速版本
func isValidEmail(testStr:String) -> Bool {
println("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
var emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
var result = emailTest?.evaluateWithObject(testStr)
return result!
}
电子邮件验证的使用:
if isValidEmail(textField.text)
{
println("Validate EmailID")
}
else
{
println("invalide EmailID")
}
更多信息这应该很好
func isValidEmail(testStr:String) -> Bool {
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
用法:
if isValidEmail("xxxx@gmail.com"){
//email is valid
}
这应该很好用
func isValidEmail(testStr:String) -> Bool {
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
用法:
if isValidEmail("xxxx@gmail.com"){
//email is valid
}
希望有帮助:
func isValidEmail(testStr:String) -> Bool {
print("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
在代码中:
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.
}
func isValidEmail(testStr:String) -> Bool {
print("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
@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 isValidEmail(Email) == 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")
}
希望有帮助:
func isValidEmail(testStr:String) -> Bool {
print("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
在代码中:
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.
}
func isValidEmail(testStr:String) -> Bool {
print("validate emilId: \(testStr)")
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"
let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
let result = emailTest.evaluateWithObject(testStr)
return result
}
@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 isValidEmail(Email) == 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")
}
我是从斯威夫特开始的ios新手。如果可能的话,请使用swift。这将是帮助。询问swift的完整问题如何使用上述解决方案代码显示警报?以及那是什么
rdfsdfsd
?@user5513630它是字符串!!!我是从斯威夫特开始的ios新手。如果可能的话,请使用swift。这将是帮助。询问swift的完整问题如何使用上述解决方案代码显示警报?以及那是什么rdfsdfsd
?@user5513630它是字符串!!!“if语句中出现错误”是一个无用的问题描述。哪个if语句和什么错误?除了实际联系主机并查看它是否会接受电子邮件之外,实在没有验证电子邮件地址的好方法。请参阅本文:“if语句中出现错误”是一个无用的问题描述。哪个if语句和什么错误?除了实际联系主机并查看它是否会接受电子邮件之外,实在没有验证电子邮件地址的好方法。看这篇文章:我只是复制了你的func方法,但是当我输入一封未格式化的电子邮件时,它并没有闪现??没关系,但是我如何在我的signupbutton pressd方法中调用这个方法呢?你需要稍微扩展一下正则表达式emailRegEx=“[a-Z0-9a-z.\u%+-]+@[a-Za-Z0-9.-+\[a-Za-z]{2,15}”
-很多域结尾现在都超过4个字符。我只是复制了你的func方法,但当我输入一封未格式化的电子邮件时它不会闪现??没关系,但是我如何在我的signupbutton pressd方法中调用这个方法呢?你需要稍微扩展正则表达式emailRegEx=“[A-Z0-9a-z.\U%+-]+@[A-Za-Z0-9.-+\.[A-Za-z]+\.[A-z]{2,15}”
-现在许多域结尾超过4个字符。错误。以下电子邮件有效,本测试表明无效j@proseware.com9
,js#internal@proseware.com,j_9@[129.126.118.1]
,`js@proseware.com9`与之相反的是:j.@server1.prosware.com
,j。。s@proseware.com
,js@proseware..com
,js@proseware..com
False。以下电子邮件有效,本测试表明无效j@proseware.com9
,js#internal@proseware.com,j_9@[129.126.118.1]
,`js@proseware.com9`与之相反的是:j.@server1.prosware.com
,j。。s@proseware.com
,js@proseware..com
,js@proseware..com