UITextField : restrict the maximum allowed value (number) during inputting

Question

I have a UITextField, I\'d like to restrict the maximum allowed input value in the field to be 1000. That\'s when user is inputting number inside, once the inpu

Answer 1

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    if(textField.tag == 3)
    {
        if(textField.text.length >3 && range.length == 0)
        {
            return NO;
        }
        else
        {
            return YES;
        }
    }
}