Swift NavigationController的使用

一、创建导航条

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.

self.window?.backgroundColor = UIColor.whiteColor()
let firstVC = FirstViewController(nibName:nil,bundle: nil)
let navigation = UINavigationController(rootViewController: firstVC)
self.window?.rootViewController = navigation;

return true
}

二、导航条上添加按钮

let item = UIBarButtonItem(title: "下一个", style: UIBarButtonItemStyle.Plain, target: self, action: "buttonClick:")
self.navigationItem.rightBarButtonItem = item

三、跳转到下一个界面

func buttonClick(button:UIButton) {
let secondVC = SecondViewController(nibName:nil,bundle: nil)
self.navigationController?.pushViewController(secondVC, animated:true)
}

四、返回到上一个界面

func back() {
self.navigationController?.popViewControllerAnimated(true)
}