iOS Swift Navigate to Certain Viewcontroller Programmatically from Push Notification

Swift - How to open specific view controller when push notification received?

When you app is in closed state you should check for launch option in

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

and call your API.

Example:

if let option = launchOptions {
  let info = option[UIApplicationLaunchOptionsKey.remoteNotification]
  if (info != nil) {
    goAnotherVC()
  }
}

Unable to navigate to specific viewController after clicking push notification in foreground using FCM below iOS 10

Implement below extension of UIApplication

extension UIApplication {
    class func topViewController(controller: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
        if let navigationController = controller as? UINavigationController {
            return topViewController(controller: navigationController.visibleViewController)
        }
        if let tabController = controller as? UITabBarController {
            if let selected = tabController.selectedViewController {
                return topViewController(controller: selected)
            }
        }
        if let presented = controller?.presentedViewController {
            return topViewController(controller: presented)
        }
        return controller
    }
}

Please change your code to navigate to specific screen while app is in foreground.

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(withIdentifier: "chatMessageVC") as! ChatMessagesVC
UIApplication.topViewController()?.navigationController?.pushViewController(viewController, animated: false)

Hope this finds you well and let me know in case of any queries.

UPDATE

If the application is running in the foreground, iOS won't show a notification banner/alert. That's by design. But we can achieve it by using UILocalNotification as follows

if application.applicationState == .active {
    var localNotification = UILocalNotification()
    localNotification.userInfo = userInfo
    localNotification.soundName = UILocalNotificationDefaultSoundName
    localNotification.alertBody = message
    localNotification.fireDate = Date()
    UIApplication.shared.scheduleLocalNotification(localNotification)
}

Programmatically navigate to another view controller/scene

I already found the answer

Swift 4

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "nextView") as! NextViewController
self.present(nextViewController, animated:true, completion:nil)

Swift 3

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

let nextViewController = storyBoard.instantiateViewControllerWithIdentifier("nextView") as NextViewController
self.presentViewController(nextViewController, animated:true, completion:nil)

Load specific View after push notifications

You can try below approch:

Add this method in the AppDelegate Class:

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
   // Open Your Details view controller directly using segue
   // You can pass details id and then fetch details and display in the view.
    SettingViewController *moreVC = [[SettingViewController alloc] initWithNibName:@"SettingViewController" bundle:nil];
    UINavigationController *navigationRootController = [[UINavigationController alloc] initWithRootViewController:moreVC];
    [[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:navigationRootController animated:YES completion:NULL];
}

This is another approch:

  - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {

       // Register the below observer in the rootviewcontroller so its registered first and than Pass NSDictionary 
       [[NSNotificationCenter defaultCenter] postNotificationName:@"pushModalPopUp" object:userInfo];
    }

iOS Swift: Pushing two view controllers when app launched from push notification

Can you try changing this

homeNav.addChildViewController(homePageTableVC)

to this

homeNav.setViewControllers([homePageTableVC], animated: false)

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