How to place UIBarButtonItem on the right side of a UIToolbar?

Question

I have designed a view with a toolbar that appears modally in Interface Builder. I have a UIBarButtonItem that is on the left hand side, which I would like to appear on the

Answer 1

Swift Code:

func addDoneButton() -> UIToolbar {
    let toolbar = UIToolbar()
    let flexButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
    let doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: Selector("donePressed"))
    toolbar.setItems([flexButton, doneButton], animated: true)
    toolbar.sizeToFit()
    return toolbar
}