I have a view controller that I present in my iOS app using Swift and Xcode that is able to be dismissed by swiping down on it. I need to implement code that executes when the user swipes down on the view controller to dismiss it. I suspect there is a callback function that is called when that happens. Can anyone tell me if that's so and what the callback function is?
Without too much information this is how I would set it up:
My views would be on a Navigation controller
On the view I want to dismiss with down swipe I would use a Gesture recognizer:
override func viewDidLoad() {
super.viewDidLoad()
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeDown.direction = .down
view.addGestureRecognizer(swipeDown)
}
// Handle swipe down detected
@objc func respondToSwipeGesture(gesture: UIGestureRecognizer) {
// Do whatever you want before you leave
// Pop back a view
if let nav = navigationController {
nav.popViewController(animated: true)
}
}
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