单击通知（后台）时 didReceiveRemoteNotification 不工作，但在应用程序处于前台时工作

Question

需要一些关于推送通知的解决方案。我尝试了堆栈中的不同解决方案，但对我不起作用！

我的问题是，当我从 PHP 脚本 触发通知时，通知本身被触发了。单击通知的事情我想从我的应用程序导航到新视图。

当应用程序处于 后台模式 并且点击通知对 完成处理程序警告 没有任何作用，但是当应用程序处于在 活动状态 和触发通知完成工作并导航到另一个视图请回复此问题，我附上了下面的代码。

在后台模式下单击通知时出错 警告：UNUserNotificationCenter 委托收到对 -userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler: 的调用，但从未调用完成处理程序。

感谢任何帮助

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],

                     fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        // If you are receiving a notification message while your app is in the background,

        let application = UIApplication.shared
        self.window = UIWindow(frame: UIScreen.main.bounds)
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let initialViewController = storyboard.instantiateViewController(withIdentifier: "LaunchScreenViewController")
        self.window?.rootViewController = initialViewController
        self.window?.makeKeyAndVisible()

        if let messageID = userInfo[gcmMessageIDKey] {

            print("Message ID: \(messageID)")

        }

        // Print full message.

        print(userInfo)

        print("Hello u have entered through Push  notification ")

        completionHandler(UIBackgroundFetchResult.newData)
    }

Answer 1

您好，我刚刚找到了答案！！我尝试在 usernotificationcenter 扩展方法 中导航到另一个视图并且成功了。

extension AppDelegate: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print("Entry through the Notification")

        let application = UIApplication.shared
        self.window = UIWindow(frame: UIScreen.main.bounds)
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let initialViewController = storyboard.instantiateViewController(withIdentifier: "stationListVC")
        self.window?.rootViewController = initialViewController
        self.window?.makeKeyAndVisible()

        if response.actionIdentifier == "remindLater" {
            let newDate = Date(timeInterval: 900, since: Date())
            scheduleNotification(at: newDate)
        }
    }
}

感谢大家的帮助 ;)

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