CODEWITHSUNDEEP
iosswiftuiviewcontrolleruinavigationcontrolleruitabbarcontroller
bablack
bablack

Reputation: 129

Push ViewController in UITabBarController

I have a general question: I have set up a TabBar in my app. When I click on item 1, the TabBar shows a ViewController (VC 1) embedded in a NavigationController. This VC is supposed to push another VC (VC 2) when the user logs out (using firebase and addStateDidChangeListener). It works great : When I log out the VC1 push VC 2. However when I click again on the item 1 on the tab bar. Guess what? I can see VC 1 while there is no user. I think I have to dismiss VC 1 somehow but I do not know how to implement this function. Can you help me?

Upvotes: 1

Views: 2373

Answers (3)

vipinsaini0
vipinsaini0

Reputation: 561

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    let userInfo = response.notification.request.content.userInfo
    print("didReceive2: ", userInfo)
    Messaging.messaging().appDidReceiveMessage(userInfo)
    
        //        NotificationCenter.default.post(name: NotificationName.openRaceDAyTipsTab, object: nil)
    
    let application = UIApplication.shared
    
    if(application.applicationState == .active) {
        print("user tapped the notification bar when the app is in foreground")
    }
    
    if(application.applicationState == .inactive) {
        print("user tapped the notification bar when the app is in background")
    }
    
    guard let rootViewController = (UIApplication.shared.connectedScenes.first?.delegate as? SceneDelegate)?.window?.rootViewController else {
        return
    }
    print("got active scene")
    
    
        // handle the push notification here
    if let articleId = userInfo["articleId"] as? String {
            // use the articleId in your app logic
            // Create an instance of ArticlesDetailViewController
        let articlesDetailVC = ArticlesDetailViewController.instantiateHome()
        articlesDetailVC.articlesId = articleId
        
        if let tabBarVC = rootViewController as? UITabBarController,
           let navVC = tabBarVC.selectedViewController as? UINavigationController {
            navVC.pushViewController(articlesDetailVC, animated: true)
        }
    }
    
    completionHandler()
}

Upvotes: -1

RajeshKumar R
RajeshKumar R

Reputation: 15748

Changing view controllers in the navigation controller

When logout button is tapped remove the VC1 from navigation controller and add VC2

if var viewControllers = self.navigationController?.viewControllers {
    viewControllers.removeLast()
    viewControllers.append(VC2())
    self.navigationController?.setViewControllers(viewControllers, animated: true)
}

When logging in again in VC2 again change view controllers

self.navigationController?.setViewControllers([VC1()], animated: true)

Changing view controllers in tab bar controller

Logout

if var viewControllers = self.tabBarController?.viewControllers {
    let newVC = UINavigationController(rootViewController: VC2())
    newVC.tabBarItem = UITabBarItem(title: "Log In", image: nil, tag: 0)
    viewControllers.removeFirst()
    viewControllers.insert(newVC, at: 0)
    self.tabBarController?.viewControllers = viewControllers
}

Login 

if var viewControllers = self.tabBarController?.viewControllers {
    let newVC = UINavigationController(rootViewController: VC1())
    newVC.tabBarItem = UITabBarItem(title: "Home", image: nil, tag: 0)
    viewControllers.removeFirst()
    viewControllers.insert(newVC, at: 0)
    self.tabBarController?.viewControllers = viewControllers
}

Upvotes: 3

Jignesh Patel
Jignesh Patel

Reputation: 101

You can override window rootviewcontroller new tabbar controller. So in future you dont have any bugs with new development (new screen hierarchy).

    //Login
    let navigation = UINavigationController.init(rootViewController: vc1)
    let tabVC = UITabBarController()
    tabVC.viewControllers?.append(navigation)
    self.appDelegate?.window?.rootViewController = navigation

    //Logout
    let navigation = UINavigationController.init(rootViewController: vc2)
    let tabVC = UITabBarController()
    tabVC.viewControllers?.append(navigation)
    self.appDelegate?.window?.rootViewController = navigation

Upvotes: 0

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