I am trying to create a custom transition, similar to the one that is on the App Store. I used these tutorials:
https://eric-dockery283.medium.com/custom-view-transitions-like-the-new-app-store-a2a1181229b6
https://www.raywenderlich.com/2925473-ios-animation-tutorial-custom-view-controller-presentation-transitions
I have also been experimenting with using the load view to have the root view to create the view.
now what I am doing is that I am using a collectionview, which I want to keep, and when an item is pressed it animate transitions to a new view controller with a larger image, simple.
the problem is that when I combine it with using the loadView with view = rootView() it did not work in some scenarios.
For example:
when I use the modalPresentationStyle = .fullScreen, when I press an item in the collection view the screen just goes black, and then when I press the view hierarchy it shows this:
when I remove the modalPresentationStyle = .fullScreen it does animate but it is the popover transition, which I do not want.
What I want is to have a full screen transition that is animated.
here is the view controller:
import UIKit
class OtherViewController: UIViewController, UIViewControllerTransitioningDelegate {
var data: DogArr?
var rootView = testView1()
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = .systemBackground
}
override func loadView() {
view = rootView
rootView.animalImg.image = UIImage(named: data?.image ?? "")
rootView.dismissBtn.addTarget(self, action: #selector(dismissingBtn), for: .touchUpInside)
}
@objc func dismissingBtn() {
self.dismiss(animated: true)
}
}
class testView1: UIView {
var animalImg: UIImageView = {
let img = UIImageView()
img.contentMode = .scaleAspectFit
img.translatesAutoresizingMaskIntoConstraints = false
return img
}()
var dismissBtn: UIButton = {
let btn = UIButton()
btn.translatesAutoresizingMaskIntoConstraints = false
btn.setTitle("Done", for: .normal)
btn.titleLabel?.font = UIFont.systemFont(ofSize: 25)
btn.titleLabel?.textAlignment = .center
btn.setTitleColor(.label, for: .normal)
btn.contentMode = .scaleAspectFill
return btn
}()
init() {
super.init(frame: .zero)
self.addSubview(animalImg)
self.addSubview(dismissBtn)
animalImg.translatesAutoresizingMaskIntoConstraints = false
self.backgroundColor = .systemBackground
NSLayoutConstraint.activate([
animalImg.topAnchor.constraint(equalTo: self.topAnchor),
animalImg.heightAnchor.constraint(equalTo: self.heightAnchor, multiplier: 0.5),
animalImg.widthAnchor.constraint(equalTo: animalImg.heightAnchor),
dismissBtn.topAnchor.constraint(equalTo: self.animalImg.bottomAnchor, constant: 20),
dismissBtn.centerXAnchor.constraint(equalTo: self.dismissBtn.centerXAnchor),
dismissBtn.widthAnchor.constraint(equalToConstant: 150),
dismissBtn.heightAnchor.constraint(equalToConstant: 75)
])
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
I noticed that when I remove the root view and just created everything in the view controller, it seems to work, the thing is that this is just a test for now.
The root view in a future project may be very large so I think keeping to a rootview may be a good idea. If there are any other methods similar, please share.
If there is anything I can answer please ask,
Thank you
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