Question

I have some textfields and I want to do when I change textfield1 text set text to other textfields. My code below. But it not works. How can I solve this?

- (IBAction)TCKimlikTextChange:(id)sender {

[TCKimlikText addTarget:self action:@selector(yourMethod: ) forControlEvents:UIControlEventEditingChanged];
}

-(void)yourMethod: (UITextField*)tf_{

if (tf_) {
    if (TCKimlikText.text == @"1") {
        AdinizText.text = @"Hacer";
    }
}

}

Answer 1

Your code is very abstract. yourMethod, tf_ TCKimlikTextChange are all expressions that are not very human readable. You should work on your variable names.

I suppose your first method is a button handler. It just assigned a target and action to the text field, but does not call any method. You do not need that action if you use the delegate protocol.

To solve your problem: implement the UITextField delegate methods. Make sure you set the delegate (probably self) for your text fields. Your view controller must mention the <UITextFieldDelegate> protocol in its .h file. Thus, in textField:shouldChangeCharactersInRange:replacementString::

if ([textField.text isEqualToString:@"1"]) {
   displayLabel.text = @"Hacer";
}

Notice that you need isEqualToString: to compare strings, a simple == won’t do.