Crash in modal view controller when swiping up on the controller. about collectionviewpaginglayout HOT 13 CLOSED

 @IBAction private func stackButtonTouched() {
        present(ShapesViewController.instantiate(viewModel: ShapesViewModel(layouts: .stack)), animated: true, completion: nil)
    }

class BasicSnapshotCollectionViewCell: UICollectionViewCell, SnapshotTransformView {
    
    var snapshotOptions = SnapshotTransformViewOptions(
        pieceSizeRatio: .init(width: 0.25, height: 0.10),
        piecesCornerRadiusRatio: .static(0.00),
        piecesAlphaRatio: .aggregated([.rowOddEven(
            0.20,
            0.00,
            increasing: false
            ), .columnOddEven(
                0.00,
                0.20,
                increasing: false
            )], +),
        piecesTranslationRatio: .rowOddEven(
            .init(x: -0.15, y: 0.00),
            .init(x: 0.15, y: 0.00),
            increasing: false
        ),
        piecesScaleRatio: .columnOddEven(
            .init(width: 0.10, height: 0.40),
            .init(width: 0.40, height: 0.10),
            increasing: false
        ),
        containerScaleRatio: 0.20,
        containerTranslationRatio: .init(x: 1.00, y: 0.00)
    )
    
    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
    }
}

class ViewController: UIViewController, UICollectionViewDataSource {
        
    @IBOutlet weak var collectionView: UICollectionView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupCollectionView()
    }
    
    private func setupCollectionView() {
        let layout = CollectionViewPagingLayout()
        collectionView.collectionViewLayout = layout
        collectionView.isPagingEnabled = true
        collectionView.dataSource = self
    }
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        collectionView?.performBatchUpdates({
            self.collectionView.collectionViewLayout.invalidateLayout()
        })
    }
    
    func collectionView(
        _ collectionView: UICollectionView,
        numberOfItemsInSection section: Int
    ) -> Int {
       return 10
    }
    
    func collectionView(
        _ collectionView: UICollectionView,
        cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        
        if indexPath.row % 2 == 0 {
                    return collectionView.dequeueReusableCell(withReuseIdentifier: "redCell", for: indexPath) as! redCollectionViewCell
        } else {
                    return collectionView.dequeueReusableCell(withReuseIdentifier: "blueCell", for: indexPath) as! blueCollectionViewCell
        }
    }
}

import UIKit
import CollectionViewPagingLayout

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    
    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        self.window = UIWindow(frame: UIScreen.main.bounds)
        let nav = UINavigationController()
        nav.viewControllers = [MainVC()]
        window?.rootViewController = nav
        window?.makeKeyAndVisible()
        return true
    }

}


class MainVC: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.backgroundColor = .green
        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "present", style: .done, target: self, action: #selector(presentVC))
    }
    
    @objc func presentVC() {
        present(ViewController(), animated: true, completion: nil)
    }
}


class ViewController: UIViewController, UICollectionViewDataSource {

    weak var collectionView: UICollectionView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: CollectionViewPagingLayout())
        view.addSubview(collectionView)
        self.collectionView = collectionView
        setupCollectionView()
    }
    
    private func setupCollectionView() {
        collectionView.isPagingEnabled = true
        collectionView.dataSource = self
        collectionView.register(BasicSnapshotCollectionViewCell.self, forCellWithReuseIdentifier: "redCell")
    }
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        collectionView.frame = .init(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
        collectionView?.performBatchUpdates({
            self.collectionView.collectionViewLayout.invalidateLayout()
        })
    }
    
    func collectionView(
        _ collectionView: UICollectionView,
        numberOfItemsInSection section: Int
    ) -> Int {
       return 10
    }
    
    func collectionView(
        _ collectionView: UICollectionView,
        cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        
        collectionView.dequeueReusableCell(withReuseIdentifier: "redCell", for: indexPath) as! BasicSnapshotCollectionViewCell
    }

}


class BasicSnapshotCollectionViewCell: UICollectionViewCell, SnapshotTransformView {
    
    var snapshotOptions = SnapshotTransformViewOptions(
        pieceSizeRatio: .init(width: 0.25, height: 0.10),
        piecesCornerRadiusRatio: .static(0.00),
        piecesAlphaRatio: .aggregated([.rowOddEven(
            0.20,
            0.00,
            increasing: false
            ), .columnOddEven(
                0.00,
                0.20,
                increasing: false
            )], +),
        piecesTranslationRatio: .rowOddEven(
            .init(x: -0.15, y: 0.00),
            .init(x: 0.15, y: 0.00),
            increasing: false
        ),
        piecesScaleRatio: .columnOddEven(
            .init(width: 0.10, height: 0.40),
            .init(width: 0.40, height: 0.10),
            increasing: false
        ),
        containerScaleRatio: 0.20,
        containerTranslationRatio: .init(x: 1.00, y: 0.00)
    )
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupView()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setupView()
    }
    
    
    func setupView() {
        let view = UIView()
        contentView.addSubview(view)
        view.backgroundColor = .red
        view.frame = .init(x: 100,y: 100,width: 100,height: 100)
    }
}

     weak var collectionView: UICollectionView!
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        DispatchQueue.main.async { [weak self] in
            self?.collectionView?.performBatchUpdates({ [weak self] in
                self?.collectionView?.collectionViewLayout.invalidateLayout()
            })
        }
    }

public protocol SnapshotTransformView: TransformableView {
 
    /// Check if the snapshot can be reused
    func canReuse(snapshot: SnapshotContainerView) -> Bool
}