我使用 firebase 进行身份验证。用户登录后，我想使用选项卡 Controller 移动到主屏幕。
应用程序代理函数
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool
{
window = UIWindow(frame: UIScreen.mainScreen().bounds)
window?.makeKeyAndVisible()
navToSignin()
return true
}
func navToHome()
{
print("navToHome")
let customTab = CustomTabBar()
window?.rootViewController = customTab
}
func navToSignin()
{
let firstPage = SigninNewVC()
window?.rootViewController = firstPage
}
登录NewVC
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)
if FIRAuth.auth()?.currentUser?.uid != nil
{
if let appDel = UIApplication.sharedApplication().delegate as? AppDelegate
{
print("viewWillAppear")
appDel.navToHome()
//This func gets called but still does not navigate to Home VC
}
}
}
private func fbSignin(token: String)
{
FIRAuth.auth()?.signInWithCustomToken(token) { (user, error) in
if error == nil
{
if user != nil
{
if let appDel = UIApplication.sharedApplication().delegate as? AppDelegate
{
JulehHUD.hideProgressHUD(self.view!)
appDel.jumpToHome()
//This part works fine when i login it navigates to Home Screen
}
}
}
else
{
print("Error:\n\(error)\n")
}
}
}
当我第一次登录时，它工作正常，我可以导航到主屏幕。但如果我重新启动该应用程序，我将无法导航到主屏幕。尽管执行了打印语句 print("viewWillAppear")& print("navToHome")，它仍保留在 SigninNewVC 中。不知道我做错了什么。下面是我的标签栏类
类 CustomTabBar:UITabBarController {
override func viewDidLoad()
{
super.viewDidLoad()
let homeController = HomeScreenVC()
let newHomeTab = UINavigationController(rootViewController: homeController)
newHomeTab.title = "Home"
viewControllers = [newHomeTab]
}
}
请让我知道我做错了什么。
最佳答案
我认为你错误地实例化了 VC，你应该使用像 CustomTabBar(nibName: nil, bundle:nil) 这样的东西，并在它的 loadView:
关于IOS Swift - 无需 Storyboard 即可导航至主屏幕，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38580899/