Change identifier for UIBarButtonItem programatically

Question

Through Interface Builder I have the ability to change the Identifier of a UIBarButtonItem to something like "Add" (or "Undo", "Redo" etc...). This gives my button a nice "+" image.

How can I set this programatically? The UIBarButtonItem does not accept a "setIdentifier" message.

Answer 1

Figured it out myself:

UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(doAddAction:)];