如何从情节提要中访问tabBarViewController中所有可能的视图控制器？

Question

I would like to programmatically construct a replica of the storyboard tabBarController, as follows:

   let storyboard = UIStoryboard(name: "Main", bundle: nil)
   let tabBarController = storyboard.instantiateViewController(withIdentifier: "tabBarViewController")
   viewControllers = tabBarController.childViewControllers            

My storyboard tabBarController contains 7 tabs. But the code above only provide me with the 4 firsts (on iPhone). How can I get the others tabs from the storyboard?

Answer 1

The problem is because you are using wrong property to get viewcontrollers . You should use viewControllers instead of childViewControllers . Try the code below, it will return 7 controllers for viewControllers value

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = storyboard.instantiateViewController(withIdentifier: "tabBarViewController") as! UITabBarController
let viewControllers = tabBarController.viewControllers;