导航栏上方的iOS Empty Space？

Question

当我从Appdelegate检查并调用Viewcontroller时，我的应用程序显示导航栏上方的空白区域我不知道是什么原因。

这里我给出了代码和屏幕截图。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    let checkUserid = UserDefaults.standard.value(forKey: "USERID")
    if checkUserid != nil {
        print(checkUserid!)
        let mainStoryboard = UIStoryboard(name: "Main" , bundle: nil)

        let revealViewController = mainStoryboard.instantiateViewController(withIdentifier: "RevealViewController") as? SWRevealViewController
        let navigationController = UINavigationController(rootViewController: revealViewController!)
        navigationController.navigationBar.isTranslucent = false
        window!.rootViewController = navigationController
        window!.makeKeyAndVisible()
    }
    else
    {
        let mainStoryboard = UIStoryboard(name: "Main" , bundle: nil)
        let loginViewController = mainStoryboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController
        let navigationController = UINavigationController(rootViewController: loginViewController)
        navigationController.navigationBar.isTranslucent = false
        window!.rootViewController = navigationController
        window!.makeKeyAndVisible()
    }
}

Answer 1

我相信您需要隐藏默认导航栏。

尝试添加以下代码：

navigationController.isNavigationBarHidden = true