You are trying to access it before any animation / transition takes place.
From the docs:
"The transition coordinator object associated with a currently active
transition or nil if no transition is in progress.”
Most pushes end up deferred (they don’t happen until the run loop turns) so the
transition coordinator would not have been created yet.
Try using the UINavigationController delegate methods,
-navigationController:willShow/didShowViewController:animated:, instead.
> On Jun 15, 2016, at 7:57 AM,
Since I am getting nowhere with this I thought maybe at least I could know
when the animation finishes.
So I was trying it like this:
extension UINavigationController {
func pushViewController(viewController: UIViewController, animated:
Bool, completion: (Void -> Void)) {
Since iOS7 we have the back gesture to go up the navigation stack. The
gesture basically controls the push/pop animation. We can basically pick
the controller and go back and forth in the animation phases.
Does anyone see a good way to piggyback onto that?
I would like to have another animation
