A custom modal transition that presents a controller with an expanding effect while sliding out the presenter remnants.
Simply copy the Sources/DAExpandAnimation/DAExpandAnimation.swift file into your project.
DAExpandAnimation is also available through Swift Package Manager. In Xcode select File > Swift Packages > Add Package Dependency... and type DAExpandAnimation in the search field.
Try the example project!
Have your view controller conform to UIViewControllerTransitioningDelegate. Optionally set the collapsedViewFrame, the expandedViewFrame and the animationDuration.
private let animationController = DAExpandAnimation()
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let toViewController = segue.destination
if let selectedCell = sender as? UITableViewCell {
toViewController.transitioningDelegate = self
toViewController.modalPresentationStyle = .custom
toViewController.view.backgroundColor = selectedCell.backgroundColor
animationController.collapsedViewFrame = {
return selectedCell.frame
}
animationController.animationDuration = Constants.someAnimationDuration
if let indexPath = tableView.indexPath(for: selectedCell) {
tableView.deselectRow(at: indexPath, animated: false)
}
}
}
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return animationController
}
func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return animationController
}Adopting DAExpandAnimationPresentingViewAdapter provides the following optional delegate methods for tailoring the presenter's UX.
/// A boolean value that determines whether the animations include sliding
/// the presenting view apart. Defaults to `true`.
var shouldSlideApart: Bool { get }
/// Notifies the presenting view adapter that animations are about to occur.
func animationsWillBegin(in view: UIView, presenting isPresentation: Bool)
/// Notifies the presenting view adapter that animations are just completed.
func animationsDidEnd(presenting isPresentation: Bool)Adopting DAExpandAnimationPresentedViewAdapter provides the following optional delegate methods for tailoring the presentation of a new view controller.
/// Gives the presented view adapter a chance to prepare
/// the expanding `view` before the animations.
func prepare(expanding view: UIView)
/// Gives the presented view adapter ability to change
/// properties of the expanding `view` alongside the animations.
func animate(expanding view: UIView)
/// Gives the presented view adapter ability to clean the expanded `view` up
/// after the animations are performed.
func cleanup(expanding view: UIView)
/// Gives the presented view adapter a chance to prepare
/// the collapsing `view` before the animations.
func prepare(collapsing view: UIView)
/// Gives the presented view adapter ability to change
/// properties of the collapsing `view` alongside the animations.
func animate(collapsing view: UIView)
/// Gives the presented view adapter ability to clean the collapsed `view`
/// up after the animations are performed.
func cleanup(collapsing view: UIView)Copyright (c) 2015 - 2021 Denis Avdeev. All rights reserved.
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