Not working with iOS 17.1+

[Arrankar]

Description

Describe your issue here.

What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• I've read and understood the Contributing guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've searched for any related issues and avoided creating a duplicate issue.

---

Bug Report

Modal controller don't present on iOS 17.1 and upper.

Reproducible in:

PanModal version: 1.2.7

iOS version: 17.2 beta

Steps to reproduce:

1. Create controller for present by PanModal
2. Present that controller by "presentPanModal" func
3. Look at dark screen without your controller.

Expected result:

Modal controller under dark screen.

Actual result:

Dark screen without modal controller.

Attachments:

[Noah-JJ]

What should we do?

[Arrankar]

What should we do?

Start to search new library I guess

[yavl]

Yeah, I can also reproduce this on iOS 17.1. The strange thing was that some ViewControllers were showing up and some were not. Then I realized that the view controller won't show up on presentPanModal if you add subviews / set up auto layout constraints in init(), so in my particular case the fix was just to move addSubview, snp.makeConstraints code to override func viewDidLoad().

No need to search new library 😃

[PhanithNY]

If you embedded viewController inside UINavigationController, try below code:

    let modalVC = SheetViewController()
    let navigationController = UINavigationController()
    //    This isn't work
    //    let navigationController = UINavigationController(rootViewController: modalVC)
    navigationController.setViewControllers([modalVC], animated: false)
    presentPanModal(navigationController)

Hope this help.

[Pato-Salazar]

Same issue here. The interesting part is that if click on the hierarchy button I see the controller I am trying to present. It is part of the hierarchy.

[hewang1016729378]

遇到了同样的问题

[Ashok28]

Can confirm, that workaround provided by @yavl works. Moving all layout configuration from constructor to viewDidLoad (or other lifecycle methods) fixes the issue.

[Pato-Salazar]

Does not work for me. Maybe because I have a collectionView in the modal that is being presented??.. Is this library abandoned?...

[yavl]

Does not work for me. Maybe because I have a collectionView in the modal that is being presented??.. Is this library abandoned?...

if you are presenting UICollectionViewController, try making minimal reproducible example with UIViewController + UICollectionView on it instead and see if that helps.

[oscarcv]

From the tests I have performed the problem appears in the addRoundedCorners function of the PanModalPresentationController class.

 func addRoundedCorners(to view: UIView) {
        let radius = presentable?.cornerRadius ?? 0
        let path = UIBezierPath(roundedRect: view.bounds, // Bounds value is .zero
                                byRoundingCorners: [.topLeft, .topRight],
                                cornerRadii: CGSize(width: radius, height: radius))

        // Draw around the drag indicator view, if displayed
        if presentable?.showDragIndicator == true {
            let indicatorLeftEdgeXPos = view.bounds.width/2.0 - Constants.dragIndicatorSize.width/2.0
            drawAroundDragIndicator(currentPath: path, indicatorLeftEdgeXPos: indicatorLeftEdgeXPos)
        }

        // Set path as a mask to display optional drag indicator view & rounded corners
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        view.layer.mask = mask

        //Improve performance by rasterizing the layer
        view.layer.shouldRasterize = true
        view.layer.rasterizationScale = UIScreen.main.scale
    }

Because when creating the panContainerView object, containerView is nil

    private lazy var panContainerView: PanContainerView = {
        let frame = containerView?.frame ?? .zero // ContainerView is nill
        return PanContainerView(presentedView: presentedViewController.view, frame: frame)
    }()

To solve the problem, we add in line 179, to the frame calculation if it is zero

    override public func presentationTransitionWillBegin() {

        guard let containerView = containerView
            else { return }
        // Fix bug issue
        if self.panContainerView.frame == .zero {
            self.adjustPresentedViewFrame()
        }
    ...

I hope it will be of help

[Pato-Salazar]

@oscarcv this actually works for me as well. Nicely done. Are you cool if I create a PR with your solution?

[oscarcv]

@Pato-Salazar

#204

[Pato-Salazar]

@oscarcv I tagged the library owners.. if we get lucky they might merge this...thanks again