Question

I am new to objective C and am having a problem with the following line. The error is: “Passing argument 3 of ‘addTarget;action:forControlEvents:’ makes integer from pointer without a cast.” The wierd thing is that I get the warnings and everything works fine on the IPAD but on the simulator it works sometimes and other times it does not work. I have a textfield in a tableviewcell, when the user types it sends what they typed to a variable.

[textField addTarget:self  action:@selector(setFilterCriteria:)  forControlEvents:UITextFieldTextDidChangeNotification]; 

Here is the IBAction:

- (IBAction)setFilterCriteria:(id)sender {
    UITextField *senderTextField = (UITextField *)sender;
    appDelegate.setFilterCriteria = senderTextField.text;
}

Answer 1

You’re specifying the wrong kind of thing for the control event.

UITextFieldTextDidChangeNotification is a notification name, not a control event type. You want one of the UIControlEvent... constants, like UIControlEventValueChanged.

(You’re seeing the warning because the notification names are NSString*s, and the expected type of that argument is a defined numeric constant.)