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October 14, 2017 21:39
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| // Check if a view controller is popped from navigation stack (either by `popViewController` or interactive transition) | |
| // Method 1 | |
| override func didMove(toParentViewController parent: UIViewController?) { | |
| super.didMove(toParentViewController: parent) | |
| if parent == nil { // parent is `nil` when the vc is popped | |
| } | |
| } | |
| // Method 2 | |
| override func viewDidDisappear(animated: Bool) { | |
| super.viewDidDisappear(animated) | |
| if self.isBeingDismissed() || self.isMovingFromParentViewController() { | |
| } | |
| } |
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