Swift：如何隐藏标签栏控制器的第一个视图控制器上的后退按钮？

Question

My Tab Bar Controller controls 5 view controllers and I want that in those 5 main pages all the back buttons are disabled and not visible. How can I do that correctly? I have tried all Swift commands seen here in SO but none has worked up to now.

I have tried with

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationItem.hidesBackButton = true
}

override func viewWillAppear(animated: Bool) {
    self.navigationItem.hidesBackButton = true
}

but they don't work. I have also tried with

self.tabBarController?.navigationItem.hidesBackButton = true

but this is the strange result

Answer 1

To remove the "back" button from the navigation bar, you can create a UITabBarController class for your UITabBarController in the storyboard, and in that class, inside the ViewDidLoad() method, you can call

self.navigationItem.hidesBackButton = true 

This will remove the back button.

Answer 2

The back button is probably added by the navigationcontroller of the tabbarcontroller . So you will have to check the tabbar navigation controller.

Something like this:

self.tabbarcontroller.navigationcontroller.navigationitem.hidesBackButton = true

I think this will resolve the issue. Since the backbutton normally is added by a navigationcontroller , and not by a tabbarcontroller

Update

I have recommended him that he should loose the navigation controllers after the tabbarcontroller. Since the tabbar already implements the navigation needed between the different views. This and hidesbackbutton = true solved his issue