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

In its most basic form you can do this:

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

    newText = [textField.text stringByReplacingCharactersInRange:range withString:string];

    return [newText intValue] < 1000;
}

However, you also need to check if newText is an integer, because intValue returns 0 when the text starts with other characters.