将UIBarButtonSystemItem图标添加到Nav (SWIFT)

Question

我一直在设法将UIBarButtonSystemItem图标添加到工具栏中。我已经用以下代码在我的NavBar上实现了它：

self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Action, target: self, action: "shareMeme")

但是当提到工具栏时，我感到很困惑。有什么想法吗？

Answer 1

尝试：

var items: Array<UIBarButtonItem> = []

items.append(UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Action, target: self, action: "selector"))

self.setToolbarItems(items as [AnyObject], animated: true)
self.navigationController?.setToolbarHidden(false, animated: true)