电子邮件validation在iPhone SDK中的textField
iPhone应用程序中如何添加电子邮件validationUITextField？
请帮助和build议
谢谢。
使用NSPredicate和Regex：
- (BOOL)validateEmailWithString:(NSString*)email { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:email]; } 对于用逗号分隔的一堆电子邮件：
- (NSMutableArray*)validateEmailWithString:(NSString*)emails { NSMutableArray *validEmails = [[NSMutableArray alloc] init]; NSArray *emailArray = [emails componentsSeparatedByString:@","]; for (NSString *email in emailArray) { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; if ([emailTest evaluateWithObject:email]) [validEmails addObject:email]; } return [validEmails autorelease]; }
编辑答案:(它也validation额外的点）
- (BOOL)validateEmailWithString:(NSString*)checkString { BOOL stricterFilter = NO; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/ NSString *stricterFilterString = @"[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}"; NSString *laxString = @".+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*"; NSString *emailRegex = stricterFilter ? stricterFilterString : laxString; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:checkString]; }
试试这个
这确实与顶级域名以及validation一起检查。
- (BOOL)validateEmail:(NSString *)inputText { NSString *emailRegex = @"[A-Z0-9a-z][A-Z0-9a-z._%+-]*@[A-Za-z0-9][A-Za-z0-9.-]*\\.[A-Za-z]{2,6}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; NSRange aRange; if([emailTest evaluateWithObject:inputText]) { aRange = [inputText rangeOfString:@"." options:NSBackwardsSearch range:NSMakeRange(0, [inputText length])]; int indexOfDot = aRange.location; //NSLog(@"aRange.location:%d - %d",aRange.location, indexOfDot); if(aRange.location != NSNotFound) { NSString *topLevelDomain = [inputText substringFromIndex:indexOfDot]; topLevelDomain = [topLevelDomain lowercaseString]; //NSLog(@"topleveldomains:%@",topLevelDomain); NSSet *TLD; TLD = [NSSet setWithObjects:@".aero", @".asia", @".biz", @".cat", @".com", @".coop", @".edu", @".gov", @".info", @".int", @".jobs", @".mil", @".mobi", @".museum", @".name", @".net", @".org", @".pro", @".tel", @".travel", @".ac", @".ad", @".ae", @".af", @".ag", @".ai", @".al", @".am", @".an", @".ao", @".aq", @".ar", @".as", @".at", @".au", @".aw", @".ax", @".az", @".ba", @".bb", @".bd", @".be", @".bf", @".bg", @".bh", @".bi", @".bj", @".bm", @".bn", @".bo", @".br", @".bs", @".bt", @".bv", @".bw", @".by", @".bz", @".ca", @".cc", @".cd", @".cf", @".cg", @".ch", @".ci", @".ck", @".cl", @".cm", @".cn", @".co", @".cr", @".cu", @".cv", @".cx", @".cy", @".cz", @".de", @".dj", @".dk", @".dm", @".do", @".dz", @".ec", @".ee", @".eg", @".er", @".es", @".et", @".eu", @".fi", @".fj", @".fk", @".fm", @".fo", @".fr", @".ga", @".gb", @".gd", @".ge", @".gf", @".gg", @".gh", @".gi", @".gl", @".gm", @".gn", @".gp", @".gq", @".gr", @".gs", @".gt", @".gu", @".gw", @".gy", @".hk", @".hm", @".hn", @".hr", @".ht", @".hu", @".id", @".ie", @" No", @".il", @".im", @".in", @".io", @".iq", @".ir", @".is", @".it", @".je", @".jm", @".jo", @".jp", @".ke", @".kg", @".kh", @".ki", @".km", @".kn", @".kp", @".kr", @".kw", @".ky", @".kz", @".la", @".lb", @".lc", @".li", @".lk", @".lr", @".ls", @".lt", @".lu", @".lv", @".ly", @".ma", @".mc", @".md", @".me", @".mg", @".mh", @".mk", @".ml", @".mm", @".mn", @".mo", @".mp", @".mq", @".mr", @".ms", @".mt", @".mu", @".mv", @".mw", @".mx", @".my", @".mz", @".na", @".nc", @".ne", @".nf", @".ng", @".ni", @".nl", @".no", @".np", @".nr", @".nu", @".nz", @".om", @".pa", @".pe", @".pf", @".pg", @".ph", @".pk", @".pl", @".pm", @".pn", @".pr", @".ps", @".pt", @".pw", @".py", @".qa", @".re", @".ro", @".rs", @".ru", @".rw", @".sa", @".sb", @".sc", @".sd", @".se", @".sg", @".sh", @".si", @".sj", @".sk", @".sl", @".sm", @".sn", @".so", @".sr", @".st", @".su", @".sv", @".sy", @".sz", @".tc", @".td", @".tf", @".tg", @".th", @".tj", @".tk", @".tl", @".tm", @".tn", @".to", @".tp", @".tr", @".tt", @".tv", @".tw", @".tz", @".ua", @".ug", @".uk", @".us", @".uy", @".uz", @".va", @".vc", @".ve", @".vg", @".vi", @".vn", @".vu", @".wf", @".ws", @".ye", @".yt", @".za", @".zm", @".zw", nil]; if(topLevelDomain != nil && ([TLD containsObject:topLevelDomain])) { //NSLog(@"TLD contains topLevelDomain:%@",topLevelDomain); return TRUE; } /*else { NSLog(@"TLD DOEST NOT contains topLevelDomain:%@",topLevelDomain); }*/ } } return FALSE; }
使用下面的代码： –
NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx]; //Valid email address if ([emailTest evaluateWithObject:userMailTextField.text] == YES) { //Do Something } else { NSLog(@"email not in proper format"); }
userMailTextField是我的textField的名称（使用你自己的）。
我希望这个代码会帮助你！
使用下面的代码“Swift语言”进行电子邮件validation
func ValidateEmailString (strEmail:NSString) -> Bool { let emailRegex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}" let emailText = NSPredicate(format:"SELF MATCHES [c]%@",emailRegex) return (emailText!.evaluateWithObject(strEmail)) }
谢谢 ：）
NSRegularExpression是使用iOS 4.x及更高版本 validation电子邮件地址的最佳方法。
-(BOOL) validateEmail:(NSString*) emailString { NSString *regExPattern = @"^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[AZ]{2,4}$"; NSRegularExpression *regEx = [[NSRegularExpression alloc] initWithPattern:regExPattern options:NSRegularExpressionCaseInsensitive error:nil]; NSUInteger regExMatches = [regEx numberOfMatchesInString:emailString options:0 range:NSMakeRange(0, [emailString length])]; NSLog(@"%i", regExMatches); if (regExMatches == 0) { return NO; } else return YES; }
用法：
if([self validateEmail:@"something@domain.com"]) { //Email Address is valid. } else { //Email Address is invalid. }
– 通过调用validateEmail方法很容易validation您的电子邮件ID：
-(BOOL)validateEmail:(NSString *)email { NSString *emailRegex = @"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:email]; }
validation您的电子邮件ID在这里
BOOL eb=[self validateEmail:**youremailtextfield**]; if(!eb) { UIAlertView *alertsuccess = [[UIAlertView alloc] initWithTitle:@"Sorry" message:@"Please enter correct email id" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; [alertsuccess show]; [alertsuccess release]; }
这里简单的方法来validation对象的电子邮件
if(![self validEmail:self.emailTxtFld.text]) { // here show alert not a valid email id }
这里有效的电子邮件ID方法是
- (BOOL) validEmail:(NSString*) emailString { if([emailString length]==0){ return NO; } NSString *regExPattern = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSRegularExpression *regEx = [[NSRegularExpression alloc] initWithPattern:regExPattern options:NSRegularExpressionCaseInsensitive error:nil]; NSUInteger regExMatches = [regEx numberOfMatchesInString:emailString options:0 range:NSMakeRange(0, [emailString length])]; if (regExMatches == 0) { return NO; } else { return YES; } }
在Swift 3.0版本
if !validEmailId(inputText: userNameTxtFld.text!) { print("Not Valid Emaild") } else { print("valid email id") } func validEmailId(inputText: String)-> Bool { print("validate emilId: \(inputText)") let emailRegEx = "^(?:(?:(?:(?: )*(?:(?:(?:\\t| )*\\r\\n)?(?:\\t| )+))+(?: )*)|(?: )+)?(?:(?:(?:[-A-Za-z0-9!#$%&'*+/=?^_'{|}~]+(?:\\.[-A-Za-z0-9!#$%&'*+/=?^_'{|}~]+)*)|(?:\"(?:(?:(?:(?: )*(?:(?:[!#-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._~!$&'()*+,;=:]+))\\])))(?:(?:(?:(?: )*(?:(?:(?:\\t| )*\\r\\n)?(?:\\t| )+))+(?: )*)|(?: )+)?$" let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx) let result = emailTest.evaluate(with: inputText) return result }
- (BOOL)validateEmailAddress:(NSString*)yourEmail { //create a regex string which includes all email validation NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; //create predicate with format matching your regex string NSPredicate *email = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; //return True if your email address matches the predicate just formed return [email evaluateWithObject:yourEmail];` }
这工作正好
-(BOOL) emailValidation:(NSString *)emailTxt { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:emailTxt]; }
完美的电子邮件validation。 尝试这个。
- (BOOL)validateEmailWithString:(NSString*)checkString { NSString *laxString = @".+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", laxString]; return [emailTest evaluateWithObject:checkString]; }
我是DCKit库的作者，它有DCMandatoryEmailTextField 。 此类自动进行电子邮件validation，并在用户键入值时突出显示/不显示文本字段：
检查出来： https ： //github.com/andrew8712/DCKit
迅速
func validateEmail(email:String) -> Bool { let stricterFilter = false let stricterFilterString = "[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}" let laxString = ".+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*"; let emailRegex = stricterFilter ? stricterFilterString : laxString let emailTest = NSPredicate(format: "SELF MATCHES %@", emailRegex) return emailTest.evaluate(with: email); }
