Question

I have an UITextField and I would like that for every tap on a character, the first character is deleted. So that I just have one character in my textField every time. Moreover I would like it to display every tap in the console log.

How can I do this?

Answer 1

You need to implement shouldChangeCharactersInRange method in your text field delegate:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:
                  (NSRange)range replacementString:(NSString *)string{
    textField.text = @"";
    return YES;
}

You may need to check for range and string values to cover all possible cases (like copy/paste actions). This code just sets the text field’s value to the last typed character.