如何一次发送所有用户的Firebase通知? [英] How to send firebase notification for all user at a time?

问题描述

我有一个应用程序，可以一次向多个用户(不是所有用户)发送通知. 那么如何使用Firebase推送通知来做到这一点?

I have an application which sends notification for multiple users at a time(not all user). So how to do this using Firebase Push Notification?

推荐答案

您可以使用主题消息

基于发布/订阅模型，FCM主题消息传递使您可以向选择加入特定主题的多个设备发送消息.

Based on the publish/subscribe model, FCM topic messaging allows you to send a message to multiple devices that have opted in to a particular topic.

主题消息支持每个应用程序无限的主题和订阅.

Topic messaging supports unlimited topics and subscriptions for each app.

要订阅主题，客户端应用程序使用FCM主题名称调用Firebase Cloud Messaging subscriptionToTopic():

To subscribe to a topic, the client app calls Firebase Cloud Messaging subscribeToTopic() with the FCM topic name:

FirebaseMessaging.getInstance().subscribeToTopic("news");

要发送有关主题的通知:

To send a notification on topic :

https://fcm.googleapis.com/fcm/send
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA

{
  "to": "/topics/news",
  "data": {
    "message": "This is a Firebase Cloud Messaging Topic Message!",
   }
}

在此处了解更多信息: https://firebase.google. com/docs/cloud-messaging/android/topic-messaging

Read more at here : https://firebase.google.com/docs/cloud-messaging/android/topic-messaging

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