Back button hidden in navigation bar (but still works)

Question

I have read about similar problems where the problem was caused by having multiple navigation controllers, but I only have one. This is my navigation flow.

VC = UIViewController, NC = UINavigationController

VC1 -modal-> NC -root-> VC2 -show-> VC3

VC1 is not embedded in a navigation controller, I'm starting that modal segue using performSegueWithIdentifier:sender:.

VC2 then is using a show segue to present VC3, which is the one where the back button is not visible. It still works though. But, it does appear if I exit to the home screen and then enters the app again, as shown here:

https://gfycat.com/VelvetyThisHamster.

Any ideas why this is happening?

edit: To make things clear: I want the button both visible and functioning (it's not that it's working that's the problem, but that it's hidden)

EDIT 2:

If I change my navigation flow to this

NC -root-> VC2 -show-> VC3

then the back button works as intended. So the question is, how can I add a regular view controller without a navigation controller before the first navigation controller? I want it before because VC1 should not have a navigation bar and VC2 should be presented modally.

In VC3? That makes the button both hidden and not functioning. — ludvigeriksson
Could you add some code of that VC? Probably initialization and viewDidLoad? — fdiaz
present modal does not embed with navigation controller, thats the reason it s not show — Anbu.Karthik

Anbu.Karthik Anbu.Karthik · Accepted Answer · 2016-02-18T10:40:28

try this

Hidden

override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)

 //use this
self.navigationItem.setHidesBackButton(true, animated: false)
//else use this

 self.navigationItem.leftBarButtonItem = nil


}

Show

override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)

 //use this
self.navigationItem.setHidesBackButton(false, animated: false)
 //else
 self.navigationController.navigationItem.backBarButtonItem.enabled = TRUE

}

Update

  override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)

 //use this
self.navigationItem.setHidesBackButton(false, animated: false)
 //else
   let backButton  = UIBarButtonItem(title: "leftbutton", style: UIBarButtonItemStyle.Plain, target: self, action: "buttonMethod")

  self.navigationItem.leftBarButtonItem = backButton

}



 func buttonMethod() {
    print("Perform action")
}

Back button hidden in navigation bar (but still works)

3 Answers