PanModal: Not working with iOS 17.1+

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

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

https://github.com/slackhq/PanModal/pull/204

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 😃