UIBARBUTTON back action

let backButton = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.plain, target: self, action: Selector(("HomeTabController")))

self.navigationItem.leftBarButtonItem = backButton


The above code is the creation of button in navigationController but I can create a button cannot write a specific view controller to open.

navigationController

I have tried with popViewController and popToRootViewController action, need a specific code for opening a particular viewController in swift, with the help of the particular viewController storyboard id and viewcontrollername.

popViewController

popToRootViewController

viewController

viewController

2 Answers
2

You need to add func name in #selctor() (Swift 4 version)

#selctor()

let backButton = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(goToViewController(_:)))

self.navigationItem.leftBarButtonItem = backButton


You need to create a func.

@objc func goToViewController(_ sender: UIBarButtonItem) {

//write code here to open a view controller

let storyboard = "Main"
let viewControllerIdentifier = "HomeVC"
let viewController = UIStoryboard(name: storyboard, bundle: nil).instantiateViewController(withIdentifier: viewControllerIdentifier) as! HomeVC
//push/present "viewController"
}


in this code just replace ChatVC name to your viewcontroller name

@objc func goToViewController(_ sender: UIBarButtonItem) {
for controller in self.navigationController!.viewControllers as Array {
if controller.isKind(of: ChatVC.self) {
self.navigationController!.popToViewController(controller, animated: true)
break
} else {
self.navigationController?.popViewController(animated: true)
}
}
}


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