适配Uniapp打开方式自定义弹出动画（包裹导航控制器）

PresentTransition.swift

/// Modal 转场动画
class PresentTransition: NSObject, UIViewControllerAnimatedTransitioning {
    
    enum Transition {
        case present
        case dismiss
    }
    
    private var tran: Transition = .present
    
    init(_ tran: Transition) {
        self.tran = tran
    }
    
    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.35
    }
    
    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        
        switch tran {
        case .present:
            presentTransition(transitionContext: transitionContext)
        case .dismiss:
            dismissTransition(transitionContext: transitionContext)
        }
    }
    
    private func presentTransition(transitionContext: UIViewControllerContextTransitioning) {
        
        let toVC = transitionContext.viewController(forKey: .to)
        
        guard let toView = toVC?.view else { return }
        
        transitionContext.containerView.addSubview(toView)
        toView.transform = CGAffineTransform(translationX: 0, y: UIScreen.main.bounds.height)
        UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: .curveEaseIn, animations: {
            toView.transform = CGAffineTransform(translationX: 0, y: 0)
        }, completion: { _ in
            transitionContext.completeTransition(true)
        })
    }
    
    private func dismissTransition(transitionContext: UIViewControllerContextTransitioning) {
        
        let fromVC = transitionContext.viewController(forKey: .from)
        
        guard let fromView = fromVC?.view else { return }
        
        UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: .curveEaseOut, animations: {
            fromView.transform = CGAffineTransform.identity.translatedBy(x: 0, y: UIScreen.main.bounds.height)
        }, completion: { _ in
            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
        })
    }
}

UIViewController+Swizzle.swift

extension UIViewController {
    
    static func setupSwizzle() {
        
        // 适配Uniapp
        swizzleMethod(originalCls: UIViewController.self,
                      originalSelector: #selector(UIViewController.present(_:animated:completion:)),
                      swizzledCls: UIViewController.self,
                      swizzledSelector: #selector(UIViewController.swizzledPresent(_:animated:completion:)))
        
        // 适配Uniapp
        swizzleMethod(originalCls: UIViewController.self,
                      originalSelector: #selector(UIViewController.viewWillAppear(_:)),
                      swizzledCls: UIViewController.self,
                      swizzledSelector: #selector(UIViewController.swizzledViewWillAppear(_:)))
    }
    
    @objc func swizzledPresent(_ viewControllerToPresent: UIViewController, animated flag: Bool, completion: (() -> Void)? = nil) {
        if String(describing: type(of: viewControllerToPresent)) == "DCUniMPViewController" {
            // 替换Uniapp弹出容器为NavigationController
            let container = UniNavigationController(rootViewController: viewControllerToPresent)
            self.swizzledPresent(container, animated: flag, completion: completion)
        } else {
            self.swizzledPresent(viewControllerToPresent, animated: flag, completion: completion)
        }
    }
    
    @objc func swizzledViewWillAppear(_ animated: Bool) {
        if String(describing: type(of: self)) == "DCUniMPViewController" {
            // 设置Uniapp页面隐藏导航
            self.navigationController?.setNavigationBarHidden(true, animated: true)
        }
        self.swizzledViewWillAppear(animated)
    }
}

UniNavigationController.swift

// 更换打开关闭uniapp动画
class UniNavigationController: UINavigationController, UINavigationControllerDelegate {
    
    override init(rootViewController: UIViewController) {
        super.init(rootViewController: rootViewController)
            
        // 移出uniapp容器边缘手势
        rootViewController.view.gestureRecognizers?.removeAll(where: { $0.isMember(of: UIScreenEdgePanGestureRecognizer.self) })
        transitioningDelegate = self
        modalPresentationStyle = .custom
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置pop手势代理为自身，解决pop根控制器时出现页面假死
        // 在其他页面改变interactivePopGestureRecognizer?.delegate指针指向会使解决方案失效
        interactivePopGestureRecognizer?.delegate = self
        delegate = self
        
        let popRecognizer = UIScreenEdgePanGestureRecognizer(target: self, action: #selector(handlePopRecognizer(_:)))
        popRecognizer.edges = .left
        popRecognizer.delegate = self
        view.addGestureRecognizer(popRecognizer)
        
        // 设置边缘手势优先级，pop优先级要大于dismiss
        if let recognizer = interactivePopGestureRecognizer {
            popRecognizer.require(toFail: recognizer)
        }
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    private let dismissAnimator = UIPercentDrivenInteractiveTransition()
    private var isInteractive: Bool = false

    @objc func handlePopRecognizer(_ popRecognizer: UIScreenEdgePanGestureRecognizer) {
        let progress = abs(popRecognizer.translation(in: UIApplication.shared.keyWindow!).x) / UIApplication.shared.keyWindow!.bounds.width
        
        switch popRecognizer.state {
        case .began:
            isInteractive = true
            dismiss(animated: true)
        case .changed:
            dismissAnimator.update(progress)
        case .ended, .cancelled:
            isInteractive = false
            if progress > 0.25 {
                dismissAnimator.finish()
            } else {
                dismissAnimator.cancel()
            }
        case .possible, .failed:
            isInteractive = false
            dismissAnimator.cancel()
        @unknown default:
            isInteractive = false
            dismissAnimator.cancel()
        }
    }
    
    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        viewControllers.last?.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
        interactivePopGestureRecognizer?.isEnabled = false
        super.pushViewController(viewController, animated: animated)
    }
    
    func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
        interactivePopGestureRecognizer?.isEnabled = true
    }
}

extension UniNavigationController: UIGestureRecognizerDelegate {
    
    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        // 当pop到根视图时注意禁用该pop手势，否则出现假死情况
        if gestureRecognizer == interactivePopGestureRecognizer, children.count <= 1 {
            return false
        }
        return true
    }
}

extension UniNavigationController: UIViewControllerTransitioningDelegate {
    
    func interactionControllerForDismissal(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
        isInteractive ? dismissAnimator : nil
    }
    
    public func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        PresentTransition(.present)
    }
    
    public func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        PresentTransition(.dismiss)
    }
}