Selector with argument

Question

I have a method like this:

- (void)methodWithParameter:(id)parameter {

}

and I want to call it using an UIBarButtonItem

barButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(methodWithParameter:)];

I want to specify the parameter but I can't use withObject: after action: because I get a warning:

No -initWithBarButtonSystemItem: target: action: withObject: method found

can anybody help me with this?

Answer 1

This does not work. You cannot pass a parameter to an action. An action method always has:

• no argument whatsoever
• one argument (id)sender,
• or two arguments (id)senderand (UIEvent *)event.