聚焦搜索后显示详细视图控制器

时间:2019-03-04 18:18:37

标签: ios swift corespotlight

在最近的项目中,我实现了聚光灯搜索,并且一切正常(我使用了UINavigationController)。现在,我将注意力集中在另一个项目上,该项目不包含UINavigationController,而仅包含两个UIViewController。同样在这种情况下,当在聚光灯搜索中按下特定项目时,除了重定向到详细视图控制器之外,其他一切都正常。我发现问题出在这种方法中,这是因为我没有使用UINavigationController。所以我的问题是,如何更改此代码使其仅与两个UIViewController一起使用?

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Swift.Void) -> Bool {

    let navController = self.window!.rootViewController as! UINavigationController

    if let actID = userActivity.userInfo!["kCSSearchableItemActivityIdentifier"] as? String {
        let ricette = DataManager.shared.arra.filter { $0.id.uuidString == actID }
        if let ricetta = ricette.first {
            debugPrint("Abbiamo la ricetta grazie all'ID")

            if let listController = navController.topViewController as? ListController {

                if let posizione = DataManager.shared.arra.index(of: ricetta) {
                    listController.showDetailFromSpotlightSearch(posizione)
                }

            } else if let ricettaController = navController.visibleViewController as? RicettaController {
                ricettaController.ricetta = ricetta
                ricettaController.aggiornaInterfaccia()
            }

        } else { debugPrint("errore ID") }
    } else { debugPrint("errore ID") }

    return true
}

1 个答案:

答案 0 :(得分:0)

您应该使用这两个扩展名来确定topViewController和visibleViewController:

extension UIApplication {
class func getVisibleViewController(_ rootViewController: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
    if let presentedViewController = rootViewController?.presentedViewController {
        return getVisibleViewController(presentedViewController)
    }

    return rootViewController
}}

extension UIApplication {
class func topViewController(controller: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
    if let presented = controller?.presentedViewController {
        return topViewController(controller: presented)
    }
    return controller
}}