pass data from view controller to tabbarviewcontroller

Question

I am segueing from a view controller to a tabbarcontroller and I want to pass data. I want to pass "sendAuthor" to the first view controller of the tabbarcontroller.

 override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if segue.identifier == "FirstVC" { let vc = (segue.destination as? UITabBarController)?.viewControllers?.first as? CommentProfileViewController vc?.sendAuthor = sendAuthor! vc?.Username.text = sendAuthor! print(sendAuthor!) } }

In order to make sure I am getting the right thing, I included a print statement print(sendAuthor!) and I am getting the correct print statement. I also included a print statement in the destination view controller but the print statement returns nil

var sendAuthor: String? override func viewDidLoad() { super.viewDidLoad() print(self.sendAuthor) }

just before let vc = , add this: print(type(of: (segue.destination as? UITabBarController)?.viewControllers?.first)) and let us know what it prints. — vacawama
– vacawama, Commented Jun 27, 2018 at 20:01
Do you hook segue destination to the tabBar itself or to the first Vc of it , Also are you sure that the first VC name is CommentProfileViewController — Shehata Gamal
– Shehata Gamal, Commented Jun 27, 2018 at 20:02

vacawama · Accepted Answer · 2018-06-27 20:40:36Z

Your VC is imbedded in a UINavigationController. You need to take that into account as well:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if segue.identifier == "FirstVC" { guard let tabbar = segue.destination as? UITabBarController, let navcon = tabbar.viewControllers?.first as? UINavigationController, let vc = navcon.topViewController as? CommentProfileViewController else { return } vc.sendAuthor = sendAuthor! vc.Username.text = sendAuthor! print(sendAuthor!) } }

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