Question

Possible Duplicate:
Localized phone number formatting

I am trying to make it to where you type in a phone number and while typing, it realizes that there are so many characters and adds in parentheses: (xxx)xxx-xxxx. I have looked on Stack Overflow for any similar answers to my problem and I came along with this link.

However, I can’t use conversions to decimal form to solve my issue but have gained more knowledge in the fact that I probably should use textField:shouldChangeCharactersInRange:withString: method. I am also going to be needing to add in the hyphen as well in the phone number but figured if I can do it for one I can do it for the other.

Any suggestions?

Answer 1

How about this:

-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    if (textField.text.length == 0)
     textField.text = [NSString stringWithFormat:@"(%@",textField.text];

    if (textField.text.length == 4)
        textField.text = [NSString stringWithFormat:@"%@) ",textField.text];

    if (textField.text.length == 9)
        textField.text = [NSString stringWithFormat:@"%@-",textField.text];

    if (textField.text.length > 13)
        return NO;

    return YES;
}