Nitish Nitish - 1 year ago 117
iOS Question

Check email with NSDataDetector

I have a string coming from server and want to check whether it contains expressions like phone numbers, mail address and email. I got success in case of phone number and mail address, but not email. I am using

for this purpose. eg

NSString *string = sourceNode.label; //coming from server

//Phone number
NSDataDetector *phoneDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypePhoneNumber error:nil];
NSArray *phoneMatches = [phoneDetector matchesInString:string options:0 range:NSMakeRange(0, [string length])];

for (NSTextCheckingResult *match in phoneMatches) {

if ([match resultType] == NSTextCheckingTypePhoneNumber) {
NSString *matchingStringPhone = [match description];
NSLog(@"found URL: %@", matchingStringPhone);

But how to do the same for email?



Answer Source

In apple documentation, it seems that recognised types does not include email :

So I suggest you to use a Regexp. It would be like :

NSString* pattern = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";

NSPredicate* predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
if ([predicate evaluateWithObject:@""] == YES) {
  // Okay
} else {
  // Not found


Because @dunforget got the best solution despites mine is the accepted one, please read his answer.

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