为什么设备无法在后台接收推送通知？

Question

在iOS10上打开应用程序时，我接收到推送通知，但是当我按下主页按钮并且应用程序处于后台模式时 - 它没有收到任何内容。

我的代码是：

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, FIRMessagingDelegate {

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
if #available(iOS 10.0, *) {
        let authOptions: UNAuthorizationOptions = [.Alert, .Badge, .Sound]
        UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions([.Sound, .Alert, .Badge], completionHandler: { (granted: Bool, error: NSError?) in

            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.currentNotificationCenter().delegate = self
            // For iOS 10 data message (sent via FCM)
            FIRMessaging.messaging().remoteMessageDelegate = self
        })
    } else {
        let settings: UIUserNotificationSettings =
            UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
        application.registerUserNotificationSettings(settings)
    }

// Connect to FCM since connection may have failed when attempted before having a token.
    connectToFcm()

    application.registerForRemoteNotifications()

}
}

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void) {
    let userInfo = notification.request.content.userInfo

}

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, didReceiveNotificationResponse response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
    //Handle the notification
    print("User Info => ",response.notification.request.content.userInfo)
    completionHandler()
}

所以我找不到问题所在？任何的想法？或者iOS10中有新的东西？

我已经开启了这些功能：

Answer 1

你试过这个吗

 这个

请在完成这些后确认，我会相应地编辑这个答案

Answer 2

尝试使用iOS 10的此步骤

•   

  首先在目标 - ＆gt;能力 - ＆gt;启用推送通知以添加推送通知权利。

•   

  第二个在您的应用中实施 UserNotifications.framework 。在 AppDelegate 中导入UserNotifications.framework。

  import＆lt; UserNotifications / UserNotifications.h＆gt;

  @interface AppDelegate：UIResponder＆lt; UIApplicationDelegate，UNUserNotificationCenterDelegate＆gt;

  @end

•   

  第三步 - 在didFinishLaunchingWithOptions方法内部分配UIUserNotificationSettings并实现UNUserNotificationCenter委托。

  定义SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO（v）（[[[[UIDevice currentDevice] systemVersion] compare：v options：NSNumericSearch]！= NSOrderedAscending）

  - （BOOL）应用程序：（UIApplication *）应用程序didFinishLaunchingWithOptions：（NSDictionary *）launchOptions {

  if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(@"10.0")){
      UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
      center.delegate = self;
      [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error){
           if( !error ){
               [[UIApplication sharedApplication] registerForRemoteNotifications];
           }
       }];  
  }
    return YES;
  }
  

  •   

    最后一步 - 实现这两个委托方法。

// ====================对于iOS 10 ====================

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

    //Called when a notification is delivered to a foreground app. 

    NSLog(@"Userinfo %@",notification.request.content.userInfo);

    completionHandler(UNNotificationPresentationOptionAlert);
}

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

   //Called to let your app know which action was selected by the user for a given notification.

   NSLog(@"Userinfo %@",response.notification.request.content.userInfo);

}

我希望它会对你有所帮助。

感谢。