Swift — UINavigationController

//设置设置导航栏标题

self.title="主页"

//设置导航栏背景色

self.navigationController?.navigationBar.barTintColor=UIColor.grayColor()

//导航栏还可以设置图片

self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: "testnavigationBar"), forBarMetrics: UIBarMetrics.Default)

//导航是否透明

self.navigationController?.navigationBar.translucent=false

//隐藏导航栏

self.navigationController?.navigationBarHidden=true

//导航push到新view controller中（左右效果）

let secondViewController = SecondViewController()

self.navigationController!.pushViewController(secondViewController,animated:true)

//返回上一级页面

let firstViewController = FirstViewController()

self.navigationController?.popViewControllerAnimated(true)

// 获得视图控制器中的某一视图控制器

let viewController =self.navigationController?.viewControllers[0]

self.navigationController?.popToViewController(viewController as! UIViewController,animated:true)

//导航push到新view controller中（上下效果）

let secondViewController = SecondViewController()

self.presentViewController(secondViewController,animated:true,completion:nil)