錄制通知時顯示ViewController

Question

當用戶點擊本地通知時，我試圖顯示一個詳細視圖控制器。 到目前為止，我已經做到了：

//AppDelegate.swift

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    let userInfo = response.notification.request.content.userInfo
    if let id = userInfo["item_id"] as? Int {
        if let item = ItemsRepository.shared.getItem(id: id) {
            let vc = DetailTableViewController()
            vc.item = item
            let tabController = self.window?.rootViewController as! UITabBarController
            let navigationController = tabController.selectedViewController as! UINavigationController
            navigationController.pushViewController(vc, animated: true)
        }
    }
    completionHandler()
}

由於某些原因，此代碼生成異常：

libc++abi.dylib: terminating with uncaught exception of type NSException

• 版本2

`

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    let userInfo = response.notification.request.content.userInfo
    if let id = userInfo["item_id"] as? Int {
        if let item = ItemsRepository.shared.getItem(id: id) {
            let vc = DetailTableViewController()
            vc.item = item
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            let vc = storyboard.instantiateViewController(withIdentifier: "DetailView") as! DetailTableViewController
            vc.item = item
            window?.rootViewController = vc
            self.window?.makeKeyAndVisible()

        }
    }
    completionHandler()
}

可以，但是標簽欄和導航控制器不再可見！

我在這里做錯了什么？

Answer 1

而不是let vc = DetailTableViewController()

嘗試這個

    let storyboard = UIStoryboard(name: "MyStoryboardName", bundle: nil)
    let vc = storyboard.instantiateViewController(withIdentifier: "someViewController")

告訴我這是否有效

Answer 2

嘗試這個

            let tabController = self.window?.rootViewController as! UITabBarController
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            let vc = storyboard.instantiateViewController(withIdentifier: "DetailView") as! DetailTableViewController
            vc.item = item
            window?.rootViewController = tabController
            tabController.present(vc, animated: true, completion: nil)

Answer 3

我已經按照我的故事板文件上的屏幕顯示流程解決了我的問題。 基本上，我已經實例化了Main.storyboard ，然后實例化了隨后的每個視圖控制器。

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    let userInfo = response.notification.request.content.userInfo
    if let id = userInfo["item_id"] as? Int {
        if let item = ItemsRepository.shared.getItem(id: id) {
            let dv = DetailTableViewController()
            dv.item = item
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            let tabbar = storyboard.instantiateViewController(withIdentifier: "homeFeed") as! UITabBarController
            tabbar.selectedIndex = 0
            let nav = tabbar.selectedViewController as! UINavigationController
            let main = nav.topViewController as! HomeCollectionViewController
            main.performSegue(withIdentifier: "ShowDetailSegue", sender: item)
            self.window?.rootViewController = tabbar
            window?.makeKeyAndVisible()

        }
    }
    completionHandler()
}