深层链接仅在应用正在运行时才有效

这是正确的行为.你应该处理它appliction(_: didFinishLaunchingWithOptions:)

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    if let url = launchOptions[.url] as? URL, let annotation = launchOptions[.annotation] {
        return self.application(application, open: url, sourceApplication: launchOptions[.sourceApplication] as? String, annotation: annotation)
    }
    return true
}