Email Phone Validation in Swift

Question

i am using the following code for phone number validation  But i am getting the following error  I cant able to proceed further  Help us to take it forward   class PhoneNumberValidation  Validation       let PHONE REGEX       d 3 -  d 3 -  d 4         func validate value  String  - gt   Bool  ValidationErrorType            if let phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX                if phoneTest evaluateWithObject value                    return  true   NoError                            return  false   PhoneNumber                    return  false   PhoneNumber            Error   swift 15 28  Bound value in a conditional binding must be of Optional type

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Updated version of iksnae s awesome answer  It s not a regex  but I think it s the best solution to validate all countries  phone numbers as it is smart enough to know if the country s phone extension code is valid as well  extension String       public var validPhoneNumber  Bool           let types  NSTextCheckingResult CheckingType     phoneNumber          guard let detector   try  NSDataDetector types  types rawValue  else   return false           if let match   detector matches in  self  options      range  NSMakeRange 0  self count   first  phoneNumber               return match    self           else               return false                    print  quot    quot  96  123  456-0990 quot  validPhoneNumber  quot     returns false  smart enough to know if country phone code is valid as well  print  quot    quot  994  123  456-0990 quot  validPhoneNumber  quot     returns true because  994 country code is an actual country phone code print  quot    quot  123  456-0990 quot  validPhoneNumber  quot     returns true print  quot    quot 123-456-0990 quot  validPhoneNumber  quot     returns true print  quot    quot 1234560990 quot  validPhoneNumber  quot     returns true

User · Answer

You can create separate class for validation as below   enum AIValidationRule  Int   case EmptyCheck  MinMaxLength  FixedLength  EmailCheck  UpperCase  LowerCase  SpecialCharacter  DigitCheck  WhiteSpaces  None      let ValidationManager   AIValidationManager sharedManager   func validateTextField txtField AITextField  forRule rule AIValidationRule  withMinimumChar minChar Int  andMaximumChar maxChar Int  - gt   isValid Bool  errMessage String  txtFieldWhichFailedValidation AITextField          switch rule        case  EmptyCheck          return  txtField text  characters count    0     false  Please enter   txtField placeholder  lowercased     txtField    nil       case  MinMaxLength          return  txtField text  characters count  lt  minChar    txtField text  characters count  gt  maxChar     false    txtField placeholder   should be of   minChar  to   maxChar  characters  txtField    nil      case  FixedLength          return  txtField text  characters count    minChar     false    txtField placeholder   should be of   minChar  characters  txtField    nil       case  EmailCheck          return    txtField text  isValidEmail         false  Please enter valid email  txtField    nil       case  UpperCase          return   txtField text  as NSString  rangeOfCharacter from  NSCharacterSet uppercaseLetters  location    NSNotFound     false    txtField placeholder   should contain atleast one uppercase letter  txtField    nil       case  LowerCase          return   txtField text  as NSString  rangeOfCharacter from  NSCharacterSet lowercaseLetters  location    NSNotFound     false    txtField placeholder   should contain atleast one lowercase letter  txtField    nil       case  SpecialCharacter          let symbolCharacterSet   NSMutableCharacterSet symbol           symbolCharacterSet formUnion with  NSCharacterSet punctuationCharacters          return   txtField text  as NSString  rangeOfCharacter from  symbolCharacterSet as CharacterSet  location    NSNotFound     false    txtField placeholder   should contain atleast one special letter  txtField    nil       case  DigitCheck          return   txtField text  as NSString  rangeOfCharacter from  NSCharacterSet charactersIn   0123456789   as CharacterSet  location    NSNotFound     false    txtField placeholder   should contain atleast one digit letter  txtField    nil      case  WhiteSpaces          return  txtField text  containsAdjacentSpaces      txtField text  isLastCharcterAWhiteSpace       false    txtField placeholder   seems to be invalid  txtField    nil      case  None          return nil              func validateTextField txtField AITextField  forRules rules  AIValidationRule   - gt   isValid Bool  errMessage String  txtFieldWhichFailedValidation AITextField         return validateTextField txtField  txtField  forRules  rules  withMinimumChar  0  andMaximumChar  0       func validateTextField txtField AITextField  forRules rules  AIValidationRule   withMinimumChar minChar Int  andMaximumChar maxChar Int  - gt   isValid Bool  errMessage String  txtFieldWhichFailedValidation AITextField          var strMessage String          for eachRule in rules            if let result   validateTextField txtField  txtField  forRule  eachRule  withMinimumChar  minChar  andMaximumChar  maxChar                if eachRule    AIValidationRule EmptyCheck                   return result              else                  strMessage       strMessage characters count    0          n n     result errMessage                                     return strMessage characters count  gt  0    false strMessage txtField    nil

User · Answer

Swift 4    You can use simplified regex    6-9   d 9            Match the beginning of the string  6-9   Match a 6  7  8 or 9   d    Match a digit  0-9 and anything else that is a  digit  in the regex engine   9     Repeat the previous   d  9 times  9 digits         Match the end of the string   From Reference  Indian 10 Digit Mobile validation can start with 6 7 8 9  -  extension String       var isValidContact  Bool           let phoneNumberRegex      6-9   d 9            let phoneTest   NSPredicate format   SELF MATCHES      phoneNumberRegex          let isValidPhone   phoneTest evaluate with  self          return isValidPhone            Usage -  print  9292929292  isValidContact   true print  5454545454  isValidContact   false   For email validation you can check this

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another solution for variety sake    public extension String       public var validPhoneNumber Bool           let types NSTextCheckingType     PhoneNumber          guard let detector   try  NSDataDetector types  types rawValue  else   return false            if let match   detector matchesInString self  options      range  NSMakeRange 0  characters count   first  phoneNumber               return match    self          else              return false                      and use like so  if  16465551212  validPhoneNumber       print  valid phone number

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Yes your Error is below in XCode 6 1    This error is occurs because of if conditional have to Bool return type  but in Your if condition Return type is NSPredicate so that you got error swift  Bound value in a conditional binding must be of Optional type you can solve as below       var phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX           if phoneTest evaluateWithObject value                      return  true   NoError                                  return  false   PhoneNumber                  Email-Validations in Swift       func isValidEmail testStr String  - gt  Bool               print  validate emilId    testStr                let emailRegEx                               t      r  n       t                                 -A-Za-z0-9     amp                         -A-Za-z0-9     amp                                                   -Z -                        t   -                                         A-Za-z0-9     -A-Za-z0-9  0 61  A-Za-z0-9           A-Za-z0-9     -A-Za-z0-9  0 61  A-Za-z0-9                             0-9      1-9  0-9      1 0-9  0-9      2 0-4  0-9      25 0-5        3     0-9      1-9  0-9      1 0-9  0-9      2 0-4  0-9      25 0-5                    -Z -                Vv  0-9A-Fa-f      -A-Za-z0-9      amp                                              t      r  n       t                                      let emailTest   NSPredicate format  SELF MATCHES      emailRegEx              let result   emailTest evaluateWithObject testStr              return result              Use of Email-validation       if isValidEmail  kirit gmail com                print  Validate EmailID                     else              print  invalide EmailID               Phone-Number Validation in Swift      func validate value  String  - gt  Bool               let PHONE REGEX       d 3 -  d 3 -  d 4                let phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX              let result   phoneTest evaluate with  value              return result

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The following code works in xcode 6 3 beta   func isValidEmail testStr String  - gt  Bool       let emailRegEx     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2 4      let range   testStr rangeOfString emailRegEx  options  RegularExpressionSearch     let result   range    nil   true   false    return result      how to use it    Ex    if isValidEmail email text     false    your code here

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Swift 4 2 and Xcode 10 1    For mobile number validation func isValidPhone phone  String  - gt  Bool        let phoneRegex       0091      91  0   6789  1   d 9         let valid   NSPredicate format   SELF MATCHES      phoneRegex  evaluate with  phone      return valid      For email validation func isValidEmail candidate  String  - gt  Bool        let emailRegex     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2 4       var valid   NSPredicate format   SELF MATCHES      emailRegex  evaluate with  candidate      if valid           valid    candidate contains                 return valid     Use like this    Button Action  IBAction func onClickRegrBtn   sender  UIButton          Check net connection here     let networkReachability   Reachability forInternetConnection       let networkStatus Int    networkReachability  currentReachabilityStatus     rawValue     if networkStatus    NotReachable rawValue           let msg   SharedClass sharedInstance noNetMsg         SharedClass sharedInstance alert view  self  title      message  msg   Display alert message       else            let mobileTrimmedString   mobileNoTF text  trimmingCharacters in   whitespaces    Trim white spaces          if mobileTrimmedString                     if isValidPhone phone  mobileTrimmedString      false                   SharedClass sharedInstance alert view  self  title      message   Please enter valid mobile number                 else                   UserDefaults standard set mobileTrimmedString  forKey   mobile     setObject                 sendMobileNumber    Call function                             else               mobileNoTF text                    Call alert function             SharedClass sharedInstance alert view  self  title      message   Please enter mobile number

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Swift 3 Validate Email  class func validateEmail email  String  - gt  Bool       let emailRegex     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2 6        return NSPredicate format   SELF MATCHES      emailRegex  evaluate with  email       Phone Number Validation  class func validatePhoneNumber value  String  - gt  Bool        let PHONE REGEX       d 3 -  d 3 -  d 4        let phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX      let result    phoneTest evaluate with  value      return result

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Swift 3 0 to 5 0 Updated Solution     MARK - Validation Extension -  extension String          To check text field or String is blank or not     var isBlank  Bool           get               let trimmed   trimmingCharacters in  CharacterSet whitespaces              return trimmed isEmpty                        Validate Email      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 count      nil           catch               return false                      var isAlphanumeric  Bool           return  isEmpty  amp  amp  range of     a-zA-Z0-9    options   regularExpression     nil              validate Password     var isValidPassword  Bool           do               let regex   try NSRegularExpression pattern     a-zA-Z 0-9  -                amp           options   caseInsensitive              if regex firstMatch in  self  options  NSRegularExpression MatchingOptions rawValue  0   range  NSMakeRange 0  self characters count      nil                    if self characters count gt  6  amp  amp  self count lt  20                       return true                  else                      return false                                else                  return false                         catch               return false                     use of Email Validation   if txtEmail isEmail       Swift 2 0 Solution  Paste these line anywhere in code  or in your Constant file   extension String          To check text field or String is blank or not     var isBlank  Bool           get               let trimmed   stringByTrimmingCharactersInSet NSCharacterSet whitespaceCharacterSet                return trimmed isEmpty                        Validate Email     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 firstMatchInString self  options  NSMatchingOptions rawValue  0   range  NSMakeRange 0  self count      nil           catch               return false                        validate PhoneNumber     var isPhoneNumber  Bool            let charcter    NSCharacterSet charactersInString    0123456789   invertedSet         var filtered NSString          let inputString NSArray   self componentsSeparatedByCharactersInSet charcter          filtered   inputString componentsJoinedByString             return  self    filtered

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validate Email -Solution for Swift 4  Create this class   import Foundation  public class EmailAddressValidator       public init                public func validateEmailAddress   email  String  - gt  Bool           let emailTest   NSPredicate format   SELF MATCHES      String emailValidationRegEx           return emailTest evaluate with  email           private extension String       static let emailValidationRegEx          p L 0-9       amp                -           p L 0-9       amp                             -             x01-  x08  x0b  x0c  x0e-  x1f  x21  x23-  x5b  x5d-               x7f         x01-  x09  x0b  x0c  x0e-  x7f                p L 0-9     a-             z0-9-     p L 0-9           p L 0-9       p L 0-9-     p L 0-9             25 0-5               2 0-4  0-9   01   0-9  0-9        3    25 0-5  2 0-4  0-9   01   0-             9  0-9      p L 0-9-     p L 0-9        x01-  x08  x0b  x0c  x0e-  x1f  x21         -  x5a  x53-  x7f         x01-  x09  x0b  x0c  x0e-  x7f              and use it like this   let validator   EmailAddressValidator   let isValid   validator validateEmailAddress  testmail testmail com

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Updated for Swift 3  extension String       var isPhoneNumber  Bool           do               let detector   try NSDataDetector types  NSTextCheckingResult CheckingType phoneNumber rawValue              let matches   detector matches in  self  options      range  NSMakeRange 0  self characters count               if let res   matches first                   return res resultType     phoneNumber  amp  amp  res range location    0  amp  amp  res range length    self characters count               else                   return false                         catch               return false

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Swift 4 1   func isValidPhone phone  String  - gt  Bool          let phoneRegex      0-9  6 14           let valid   NSPredicate format   SELF MATCHES      phoneRegex  evaluate with  phone        return valid       func isValidEmail candidate  String  - gt  Bool           let emailRegex     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2           var valid   NSPredicate format   SELF MATCHES      emailRegex  evaluate with  candidate          if valid               valid    candidate contains                         return valid

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Swift 3   private func validate phoneNumber  String  - gt  Bool       let charcterSet    NSCharacterSet charactersIn    0123456789   inverted     let inputString   phoneNumber components separatedBy  charcterSet      let filtered   inputString joined separator          return  phoneNumber    filtered

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Kirit Modi s response about Email Validation for Swift 3   func isValidEmail testStr String  - gt  Bool       let emailRegEx                               t      r  n       t                                 -A-Za-z0-9     amp                         -A-Za-z0-9     amp                                                   -Z -                        t   -                                         A-Za-z0-9     -A-Za-z0-9  0 61  A-Za-z0-9           A-Za-z0-9     -A-Za-z0-9  0 61  A-Za-z0-9                             0-9      1-9  0-9      1 0-9  0-9      2 0-4  0-9      25 0-5        3     0-9      1-9  0-9      1 0-9  0-9      2 0-4  0-9      25 0-5                    -Z -                Vv  0-9A-Fa-f      -A-Za-z0-9      amp                                              t      r  n       t                              let emailTest   NSPredicate format  SELF MATCHES      emailRegEx      let result   emailTest evaluate with  testStr      return result

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Using Swift 3   func validate value  String  - gt  Bool       let PHONE REGEX       d 3 -  d 3 -  d 4        let phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX      let result    phoneTest evaluate with  value      return result

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Maybe a better phone validator in Swift 2   extension String       var isPhoneNumber  Bool           do               let detector   try NSDataDetector types  NSTextCheckingType PhoneNumber rawValue              let matches   detector matchesInString self  options      range  NSMakeRange 0  self characters count               if let res   matches first                   return res resultType     PhoneNumber  amp  amp  res range location    0  amp  amp  res range length    self characters count               else                   return false                         catch               return false

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Phone regex only for  Iran phone number  func isValidPhone phone  String  - gt  Bool            let PHONE REGEX     09 0-9  s  9 9            let phoneTest   NSPredicate format   SELF MATCHES      PHONE REGEX          let result    phoneTest evaluate with  phone          return result

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For Swift 3 0 and above   var isPhoneNumber  Bool  let allowedCharacters   CharacterSet charactersIn    0123456789   inverted let inputString   components separatedBy  allowedCharacters  let filtered   inputString joined separator      return self    filtered

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File-New-File Make a Swift class named AppExtension Add the following           extension UIViewController              func validateEmailAndGetBoolValue candidate  String  - gt  Bool                   let emailRegex     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2 6                   return NSPredicate format   SELF MATCHES      emailRegex  evaluateWithObject candidate                                   Use           var emailValidator Bool          self emailValidator    self validateEmailAndGetBoolValue resetEmail                           print  emailValidator     String self emailValidator  boolValue            Use a loop to alternate desired results        OR         extension String                     Validate Email             var isEmail  Bool                   do                       let regex   try NSRegularExpression pattern     a-zA-Z0-9      amp              -    a-zA-Z0-9     a-zA-Z0-9-  0 61  a-zA-Z0-9          a-zA-Z0-9     a-zA-Z0-9-  0 61  a-zA-Z0-9         options   CaseInsensitive                      return regex firstMatchInString self  options  NSMatchingOptions rawValue  0   range  NSMakeRange 0  self characters count      nil                   catch                       return false                                                     Use          if resetEmail  isEmail                                                    AppController   requestResetPassword resetEmail                           self view makeToast message   Sending OTP                                                     else                                                       self view makeToast message   Please enter a valid email

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Updated for Swift     Used below code for Email  Name  Mobile and Password Validation      Name validation func isValidName   nameString  String  - gt  Bool        var returnValue   true     let mobileRegEx      A-Za-z  2          A-Z0-9a-z -   5         do           let regex   try NSRegularExpression pattern  mobileRegEx          let nsString   nameString as NSString         let results   regex matches in  nameString  range  NSRange location  0  length  nsString length            if results count    0                       returnValue   false                  catch let error as NSError           print  invalid regex    error localizedDescription            returnValue   false            return  returnValue       password validation func isValidPassword   PasswordString  String  - gt  Bool        var returnValue   true     let mobileRegEx      A-Za-z0-9 -       amp    5 15           A-Z0-9a-z -   5         do           let regex   try NSRegularExpression pattern  mobileRegEx          let nsString   PasswordString as NSString         let results   regex matches in  PasswordString  range  NSRange location  0  length  nsString length            if results count    0                       returnValue   false                  catch let error as NSError           print  invalid regex    error localizedDescription            returnValue   false            return  returnValue       email validaton func isValidEmailAddress   emailAddressString  String  - gt  Bool        var returnValue   true     let emailRegEx     A-Z0-9a-z -     A-Za-z0-9 -      A-Za-z  2 3        do           let regex   try NSRegularExpression pattern  emailRegEx          let nsString   emailAddressString as NSString         let results   regex matches in  emailAddressString  range  NSRange location  0  length  nsString length            if results count    0                       returnValue   false                  catch let error as NSError           print  invalid regex    error localizedDescription            returnValue   false            return  returnValue       mobile no  validation func isValidPhoneNumber   phoneNumberString  String  - gt  Bool        var returnValue   true               let mobileRegEx      789  0-9  9 11        let mobileRegEx      0-9  10         do           let regex   try NSRegularExpression pattern  mobileRegEx          let nsString   phoneNumberString as NSString         let results   regex matches in  phoneNumberString  range  NSRange location  0  length  nsString length            if results count    0                       returnValue   false                  catch let error as NSError           print  invalid regex    error localizedDescription            returnValue   false            return  returnValue       How to use   let isFullNameValid   isValidName  ray    if isFullNameValid      print  Valid name       else      print  Invalid name

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Swift 4  amp  Swift 5   func isValidPhone phone  String  - gt  Bool           let phoneRegex      0-9   0 1   0-9  5 16            let phoneTest   NSPredicate format   SELF MATCHES      phoneRegex          return phoneTest evaluate with  phone         func isValidEmail email  String  - gt  Bool           let emailRegEx     A-Z0-9a-z    -    A-Za-z0-9 -      A-Za-z  2 64           let emailTest   NSPredicate format  SELF MATCHES      emailRegEx          return emailTest evaluate with  email              1994423565 - Valid   1994423565 - Invalid  01994423565 - Valid  001994423565 - Valid  something example com - Valid  something  com - Invalid

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