Hello, so here is what I am trying to do. I have a birth date text field, while the user in puts text i want the field to automatically put it in the form YYYY-MM-DD. Basically while the user types it replaces the Y's M's and D's but leaves the hyphen. I am not sure how to go about this i may need a mask or something.

I know this is where some of the formatting can be done

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{

Any help would be of much help