Objective C: How do I substring an email address in text field to firstpart separated by @

Question

Hi guys, I have been scratching my head trying to find any resources on substringing an email address I get from a textfield into getting the first part before the @ symbol. Ive tried looking at the documentation, playing around with the componentsseparatedbyString.

No luck.

Thanks for your help in advance

Answer 1

NSString* email = @"[email protected]";
NSString* username = [[email componentsSeparatedByString:@"@"] objectAtIndex:0];

You'll want to do some error checking most likely, but that's the meat of it.

Answer 2

- (NSString*)usernameFromEmail:(NSString*)email
{
    NSString* username = nil;
    NSRange range = [email rangeOfString:@"@"];
    if (range.location != NSNotFound)
    {
        username = [email substringToIndex:range.location];
    }
    return username;
}

Answer 3

Using regular expressions:

NSString * email = @"[email protected]";
NSString * name = [email stringByMatching:@"^([^@]+)@" capture:1];