Changing the selected index of tabbar controller displays a black screen

Question

I am trying to navigate from one view controller to another using this code:

self.tabBarController?.selectedIndex = 1
self.tabBarController?.selectedViewController = self.tabBarController?.viewControllers![1]

When the code executes it goes to the desired UIViewController but the view appears after a small delay and a black screen is visible during that time.

Answer 1

Found the answer just had to run the code in main thread

DispatchQueue.main.async {
  self.tabBarController?.selectedIndex = 1
  self.tabBarController?.selectedViewController = self.tabBarController?.viewControllers![1]
}

}