Created
June 20, 2019 15:02
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| class UpToDownIneraction: UIPercentDrivenInteractiveTransition { | |
| // ... | |
| @objc func handleGesture(_ gestureRecoginizer: UIPanGestureRecognizer) { | |
| let gestureView = gestureRecoginizer.view! | |
| let trainsiton = gestureRecoginizer.translation(in: gestureView) | |
| switch gestureRecoginizer.state { | |
| case .began: | |
| print("began") | |
| interacting = true | |
| if let naviController = presentingViewController?.navigationController { | |
| naviController.popViewController(animated: true) | |
| } else { | |
| presentingViewController?.dismiss(animated: true, completion: nil) | |
| } | |
| case .changed: | |
| var fraction = trainsiton.y / gestureView.frame.height | |
| print("\(fraction)") | |
| fraction = max(fraction, 0.0) | |
| fraction = min(fraction, 1) | |
| couldComplete = fraction > 0.4 | |
| update(fraction) | |
| case .cancelled, .ended: | |
| interacting = false | |
| if couldComplete == false || gestureRecoginizer.state == .cancelled { | |
| cancel() | |
| } else { | |
| finish() | |
| } | |
| default: | |
| break | |
| } | |
| } | |
| } |
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