尝试放入不同的通知ID(即nid)，并为每个新通知通知而不是0，这将防止覆盖您的通知

Try to put different notification id (i.e. nid) in intent and notify instead of 0 for each new notification this will prevent over writing your notification

  PendingIntent intent = PendingIntent.getActivity(context, nid,notificationIntent, 0);

和

notificationManager.notify(nid, notification);

希望这对您有帮助