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我有一个简单的应用程序来测试休息API的推送通知。我想在应用程序中显示导航栏,但它不起作用。在我的AppDelegate我有以下代码:Swift 3 - 为什么我的导航栏不显示?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
self.registerForPushNotifications()
let url = "dev"
UserDefaults.standard.setValue(FFHelper.url(slug: url.slug()), forKey: "api-url")
var vcString = "loginView"
if KeychainSwift().get("auth-token") != nil {
vcString = "notificationsTable"
}
let initialVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: vcString)
initialVC.navigationController?.navigationBar.isHidden = false
initialVC.navigationController?.setNavigationBarHidden(false, animated: true)
window?.rootViewController = initialVC
window?.makeKeyAndVisible()
return true
}
在故事板也启用导航栏: 最后,在的viewController,我做同样的事情:
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.setNavigationBarHidden(false, animated: animated)
self.navigationController?.navigationBar.isHidden = false
super.viewWillAppear(animated)
}
但仍在启动应用程序后,导航栏ist不显示: 有人可以告诉我为什么这是?
这个故事板IDE ntifier ** var vcString =“loginView”**是为navigationController或ViewController设置的? – Surjeet
我是多么愚蠢......谢谢你的提示。这已经足以指出我的愚蠢...... :) – Thomson