UIAlertController, eliminate the animation on closing? - ios

Question

Here's a simple action sheet,
let choice = UIAlertController(title: "Choose", message: nil, preferredStyle: .actionSheet)
choice.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
self.happyCamera() }))
choice.addAction(UIAlertAction(title: "Album", style: .default, handler: { _ in
self.happyAlbum() }))
choice.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))
somewhere?.present(choice, animated: false, completion: nil)
When the action sheet appears (note that present#animated is false) it just clicks on to the screen, no cheesey animation.
However, when the user taps one of the three choices, or, taps "off", the action sheet leaves the screen by using the cheesey animation.
(In 10.3 specifically, it slides downwards off the screen.)
Is there a way to turn off that exit animation?
If you subclass UIAlertController...it doesn't work?
As DS suggests below, you could subclass UIAlertController.
However - strangely - it does nothing. Here's a test
func _test() {
let msg = SuperiorUIAlertController(
title: "Hello", message: "Hello",
preferredStyle: UIAlertControllerStyle.alert)
msg.addAction(UIAlertAction(
title: "OK", style: UIAlertActionStyle.default,
handler: nil))
let win = UIWindow(frame: UIScreen.main.bounds)
let vc = UIViewController()
vc.view.backgroundColor = .clear
win.rootViewController = vc
win.windowLevel = UIWindowLevelAlert + 1
win.makeKeyAndVisible()
vc.present(msg, animated: false, completion: nil)
}
class SuperiorUIAlertController: UIAlertController {
override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
print("You should see this! \(flag)")
self.dismiss(animated: false, completion: completion)
}
}
Indeed, the text "You should see this" never appears.

Answer 1

I hate to answer my own question, but as of late 2017, there is no way. Weird right?
Hope this fact helps someone.

Answer 2

The one more way you can Override dismiss method of viewController. If you don't wanna override other animations check animated flag value or make a flag in below method.
Make your AlertController globally
var choice = UIAlertController()
Make sure add this method in your viewController which you are presented alert
Dismiss presented alert without animation like below
override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
self.choice.dismiss(animated: false, completion: nil)
}

Answer 3

Try subclassing UIAlertController like this:
class InstantCloseAlertController: UIAlertController {
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
UIView.setAnimationsEnabled(false)
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
UIView.setAnimationsEnabled(true)
}
}