Swift 2:如何在显示LoginViewController后加载UITabBarController

Question

是Swift和Storyboard的新手.最初我必须显示登录页面,并从登录页面显示到UITabBarController.一旦用户记住登录详细信息,我必须检查AppDelegate中的登录详细信息,如果用户已经登录,则直接显示UITabBarController.我已经提到了一些SOF问题,但是没有得到结果.

我设计了嵌入了UINavigationController的LoginViewController.我有一个带有2个viewcontrollers的UITabBarController.我将LoginViewController设置为Storyboard中的inititialViewController.因此loginview首次显示.但是,我不知道如何从登录屏幕推送UITabBarController(登录按钮操作).此外,我不知道如何检查和加载登录和tabbar

分别来自appDelegate.

谁能帮帮我吗？提前致谢.

@IBAction func loginButtonAction (button : UIButton) {

        if isRemeberLogin == true {
            let loginClass = LoginModelClass(userNameValue: (usernameTF?.text)!, passwordValue: (passwordTF?.text)!)
            print("Remembering Login Details: \(loginClass.userName, loginClass.passWord)")

        }

        let homeVC = self.storyboard?.instantiateViewControllerWithIdentifier("HomeViewController") as! HomeViewController
        let collectionVC = self.storyboard?.instantiateViewControllerWithIdentifier("ItemsCollectionViewController") as! ItemsCollectionViewController


        //self.navigationController?.pushViewController(homeVC, animated: true)

        let tabBarController = self.storyboard?.instantiateViewControllerWithIdentifier("TabBarController") as! UITabBarController

        print("TABBAR \(tabBarController)")
        let viewControllersArray = [homeVC, collectionVC];
       // tabBarController?.viewControllers = viewControllersArray

        self.navigationController?.pushViewController(tabBarController, animated: true)


    }

Answer 1

谢谢你的答案.我解决了这个问题,这是我的代码.

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

        let username = NSUserDefaults.standardUserDefaults().objectForKey("Username")
        print(username)

        let storyBoard: UIStoryboard = UIStoryboard(name:"Main", bundle: NSBundle.mainBundle())

        if username?.length > 0 {
            print("User already logged In")
            let tabBarController: UITabBarController = storyBoard.instantiateViewControllerWithIdentifier("TabBarController") as! UITabBarController
            self.window?.makeKeyAndVisible()
            self.window?.rootViewController = tabBarController
        } else {
            print("New User")
            let loginViewController: ViewController = storyBoard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
            self.window?.makeKeyAndVisible()
            self.window?.rootViewController = loginViewController
        }


        return true
    }

这是来自登录按钮操作:

let storyboard: UIStoryboard = UIStoryboard(name:"Main", bundle: NSBundle.mainBundle())
        let tabBarController: UITabBarController = storyboard.instantiateViewControllerWithIdentifier("TabBarController") as! UITabBarController

        let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
        appDelegate.window!.rootViewController = tabBarController

只需在故事板中为UITabBarController提及"TabBarController"作为Identity.我创建了一个嵌入了UINavigationController和UITabBarController的ViewController,它们分别带有三个UIViewControllers.

我希望它会帮助别人.谢谢.