Swift UINavigationController(導航控制器)的建立及導航欄的設置

Swift語言新建的項目入口爲AppDelegate.swiftswift 咱們找到app func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 來建立導航控制器 let VC=ViewController()

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