Swizzle UIApplication openURL

UIApplication+Swizzle.swift

extension UIApplication {
    static let classInit: () -> () = {
        swizzle(UIApplication.self, #selector(openURL(_:)), #selector(swizzledOpenURL(_:)))
        swizzle(UIApplication.self, #selector(open(_:options:completionHandler:)), #selector(swizzledOpen(_:options:completionHandler:)))
    }
    
    @objc func swizzledOpenURL(_ url: URL) {
        print(">>>>>url", url)
    }
    
    @objc func swizzledOpen(_ url: URL, options: [UIApplication.OpenExternalURLOptionsKey: Any], completionHandler completion: ((Bool) -> Void)?) {
        print(">>>>>url", url)
    }
}

private let swizzle: (AnyClass, Selector, Selector) -> () = { fromClass, originalSelector, swizzledSelector in
    guard let originalMethod = class_getInstanceMethod(fromClass, originalSelector),
        let swizzledMethod = class_getInstanceMethod(fromClass, swizzledSelector)
        else { return }
    method_exchangeImplementations(originalMethod, swizzledMethod)
}

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  func application(_ application: UIApplication,
                     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    UIApplication.classInit()
    return true
  }
}