I'm working on an app that utilizes the navigation controller. I have a certain view controller that has a left and right button in the navigation bar and each button segues to a different view controller. When I press the right button, I just call self.performSegue(withIdentifier: "ToDestination", sender: nil) and when I pop back I call _ = self.navigationController?.popViewController(animated: true).
My issue is when I press the left button. I can push and pop, but I want the transition to work opposite of the right button. Since I'm pressing the left button, I want the segue to transition from left to right, and when I pop, I want the segue to transition from right to left.
I can get the transitions to work the way I want by doing:
//push
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "SearchController") as! SearchController
let transition: CATransition = CATransition()
let timeFunc : CAMediaTimingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.duration = 0.5
transition.timingFunction = timeFunc
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromLeft
self.navigationController!.view.layer.add(transition, forKey: kCATransition)
self.navigationController!.pushViewController(vc, animated: true)
//pop
let transition: CATransition = CATransition()
let timeFunc : CAMediaTimingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.duration = 0.5
transition.timingFunction = timeFunc
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromRight
self.navigationController!.view.layer.add(transition, forKey: kCATransition)
_ = self.navigationController?.popViewController(animated: true)
This works, but there is a black flash when transitioning between view controllers. Is there a better way to get the default transition animation?