swift 给导航增加item，实现界面的跳转

//给导航增加item

var rightItem = UIBarButtonItem(title: "First", style: UIBarButtonItemStyle.Plain, target: self, action: "fisrtItem:")

rightItem.title = "First"

self.navigationItem.rightBarButtonItem = rightItem

点击事件

func fisrtItem(right:UIBarButtonItem)

{

var vc = ViewController2()

self.navigationController?.pushViewController(vc, animated: true)

}

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