iOS development email, phone number, ID, password, nickname regular expression validation

Mailbox +  (BOOL)  validateemail: (nsstring *) Email{    nsstring *emailregex  = @ "[a-z0-9a-z._%+-][email protected][a-za-z0-9.-]+\\. [A-za-z] {2,4} ";     nspredicate *emailtest = [nspredicate predicatewithformat:@ "Self matches %@", emailregex];    return [emailtest  Evaluatewithobject:email];}   //Mobile phone number verification +  (BOOL)  validatemobile: (nsstring *) mobile{    //phone number 13 ,  15,18 opening, eight  \d  numeric characters     nsstring *phoneregex = @ "^ ((13[0-9]) | (15[^4,\\d]) | (18[0,0-9])) \\d{8}$ ";     nspredicate *phonetest = [nspredicate predicatewithformat : @ "self matches %@",phoneregex];    return [phonetest  Evaluatewithobject:mobile];} &NBSP;&NBSP;//License plate number Verification +  (BOOL)  validatecarno: (nsstring *) carno{    nsstring *carregex = @ "^[\u4e00-\u9fa5]{1}[a-za-z]{1}[a-za-z_0-9]{4}[a-za-z_0-9_\u4e00-\u9fa5]$" ;     nspredicate *cartest = [nspredicate predicatewithformat:@ "Self  matches %@ ", Carregex];    nslog (@" cartest is %@ ", CarTest);     return [cartest evaluatewithobject:carno];}   //model +  (BOOL)  validatecartype: (nsstring *) cartype{    nsstring  *cartyperegex = @ "^[\u4e00-\u9fff]+$";     nspredicate *cartest =  [nspredicate predicatewithformat:@ "self matches %@",cartyperegex];     return [cartest evaluatewithobject:cartype];}   //User name +  (BOOL)  validateusername: (nsstring *) name{    nsstring  *usernameregex = @ "^[a-za-z0-9]{6,20}+$";     nspredicate * Usernamepredicate = [nspredicate predicatewithformat:@ "self matches %@",userNameRegex];     BOOL B = [userNamePredicate evaluateWithObject:name];     Return b;}   //password +  (BOOL)  validatepassword: (nsstring *) password{    nsstring  *passwordregex = @ "^[a-za-z0-9]{6,20}+$";     nspredicate * passwordpredicate = [nspredicate predicatewithformat:@ "self matches %@", PassWordRegex ];    return [passwordpredicate evaluatewithobject:password];}   //nickname +  (BOOL)  validatenickname: (nsstring *) nickname{    nsstring  *nicknameregex = @ "^[\u4e00-\u9fa5]{4,8}$";     nspredicate * passwordpredicate = [nspredicate predicatewithformat:@ "self matches %@", NicknameRegex ];    return  [Passwordpredicate evaluatewithobject:nickname];}   //Social Security Number +  (BOOL)  validateIdentityCard:  (nsstring *) identitycard{     BOOL flag;    if  (identitycard.length <= 0)  {         flag = NO;         return flag;    }    nsstring *regex2 = @ "^ ( \\D{14}|\\D{17}) (\\d|[ XX]) $ ";    nspredicate *identitycardpredicate = [nspredicate  predicatewithformat:@ "self matches %@", regex2];    return [ Identitycardpredicate evaluatewithobject:identitycard];}

iOS development email, phone number, ID, password, nickname regular expression validation