Regex for an email address doesn't work

Question

I\'m trying to check if some email address is correct with the following code :

NSPredicate *regexMail = [NSPredicate predicateWithFormat:@\"SELF MATCHES \'.*@.*         


        

Answer 1

Here's a working example, with a slightly more appropriate pattern (although it's not perfect, as others have mentioned):

NSString* pattern = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate* predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", pattern];
if ([predicate evaluateWithObject:@"johndoe@example.com"] == YES) {
  // Match
} else {
  // No Match
}