>我在右上方拖动了一个条形按钮项。
>我双击桌面控制器中间的标题并写了一个文本。
>我也试过这个代码在我的控制器的viewDidLoad()中：

self.navigationController.navigationBar.topItem.title = "some title"
self.navigationItem.setRightBarButtonItem(UIBarButtonItem(barButtonSystemItem: .Search,target: self,action: "barButtonItemClicked:"),animated: true)
self.navigationItem.title = "YourTitle"

没有工作 – 我做错了什么？ ：/

self.title = "Your Title"

var homeButton : UIBarButtonItem = UIBarButtonItem(title: "LeftButtonTitle",style: UIBarButtonItemStyle.Plain,action: "")

var logButton : UIBarButtonItem = UIBarButtonItem(title: "RigthButtonTitle",action: "")

self.navigationItem.leftBarButtonItem = homeButton
self.navigationItem.rightBarButtonItem = logButton