Ios 应用程序在后台和前台时如何使用apns相关委托方法获取用户信息

通过网络搜索，我发现与apns相关的委托方法有三种

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

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

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

如果我像下面那样设置背景或前景标志

- (void)applicationDidEnterBackground:(UIApplication *)application {
    _resumingFromBackground = YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    _resumingFromBackground = NO;
}

当应用程序位于后台和前台时，如何使用此标志接收通知自定义数据