Push notification 如何在iOS 10中接收后台通知？

描述-正常运行iOS 9，调用以下方法

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler

但从iOS 10开始，苹果提供了新的框架，即userNotification.framework 以及新的处理方法，即

// The method will be called on the delegate only if the application is in the foreground. If the method is not implemented or the handler is not called in a timely manner then the notification will not be presented. The application can choose to have the notification presented as a sound, badge, alert and/or in the notification list. This decision should be based on whether the information in the notification is otherwise visible to the user.

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
       willPresentNotification:(UNNotification *)notification
         withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler

及

但现在，当应用程序处于后台且用户未单击通知时，我无法收到通知回拨

我想要的是，当用户在后台时，如果他收到任何通知，那么我将使用哪种方法获得收到的通知的回调

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提前感谢。

在iOS10中，当应用程序运行前台时，将调用willPresentdidReceive将在应用程序运行后台时，当用户点击通知时调用

如果您想在应用程序运行后台时处理通知，您仍然需要实现DidReceiveMemotentification…fetchCompletionHandler，并且不要忘记将“内容可用”添加到通知负载中。将其设置为1

// The method will be called on the delegate when the user responded to the notification by opening the application, dismissing the notification or choosing a UNNotificationAction. The delegate must be set before the application returns from applicationDidFinishLaunching:.

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler