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.
Best Answer
Once constructed, a UIBarButtonItem's "Identifier" can not be modified. However, the UI can be changed by replacing the button with a programmatically constructed variant. For example: