Question

I have been trying to limit a textField by many codes available out there in the internet but with no luck.

I have added UIViewController<UITextFieldDelegate> in my header file

and textField.delegate = self; in my viewDidLoad

and implemented the following fundtion in my .m file:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
    return !([newString length] > 5);
}

this stil does not limit my text field. any idea?

Answer 1

Do it as following as it has been the exact duplicate of this

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    NSUInteger newLength = [textField.text length] + [string length] - range.length;
    return (newLength > 5) ? NO : YES;
}