封闭/背景应用模式下的FCM更新徽章编号 [英] FCM Update BadgeNumber in Closed/Background Application Mode

问题描述

我正在使用 ShortcutBadger NuGet来提醒未针对我的应用程序处理的通知数量 Xamarin.Android .因此实现很简单:

I'm using ShortcutBadger NuGet for alerting number of notification not treated for my app Xamarin.Android. So the implementation is simple :

 ShortcutBadger.ApplyCount(this, _UnreadNotifCount); 

并且我已经在OnMessageReceived方法中实现了(我使用FireBase通知):

And I've implemented in OnMessageReceived method (I use FireBase notification):

public override void OnMessageReceived(RemoteMessage message)
        {
            ShortcutBadger.ApplyCount(this, 6);

            SendNotification(message.GetNotification().Body, message.Data);
        }

仅在已打开应用程序的情况下才能正常工作，并且当我在已关闭/背景应用程序模式下收到通知时，它不起作用！

It works fine only in case of opened application and when I receive notification in Closed/Background application mode, it doesn't work!

您对在封闭/背景应用程序模式下在哪里/如何更新徽章编号有任何建议?

Do you have any suggestion where/how can I update the badge number for Closed/Background application mode?

推荐答案

如果您的应用程序处于后台"或已终止"状态，则更新徽章计数的最佳方法是使用HandleIntent方法

If your application is in Background or Killed state the best way of updating badge count would be to use the HandleIntent method

在您的消息传递服务类中，该类继承自以下内容:FirebaseMessagingService

In your messaging service class the one that inherits from the following: FirebaseMessagingService

重写类似这样的handle intent方法:

override the handle intent method something like this :

  public override void HandleIntent(Intent p0)
    {
      ShortcutBadger.ApplyCount(this,your_count);
      base.HandleIntent(intent);
    }

注意:在某些情况下，此通知功能还会在前台通知中调用，这可能会影响您的人数.

Note: that in certain cases this function is also called in foreground notifications that might affect your count.

如有任何问题，请还原.

In case of any issues kindly revert.

祝你好运！

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