无法解析符号 com.google.firebase.messaging.Message

2022-01-18 00:00:00 firebase android firebase-cloud-messaging java

我正在按照以下链接实现 Firebase 消息传递以将消息发送到多个设备

I'm following the below link to implement Firebase Messaging to send messages to multiple devices

https://firebase.google.com/docs/cloud-messaging/android/send-multiple#build_send_requests

我几乎完成了实现，但只是停留在最后阶段(构建发送请求)

I'm almost done with the implementation but just stuck at the last stage (Build send requests)

在下面的代码中

Message message = Message.builder()
    .putData("score", "850")
    .putData("time", "2:45")
    .setTopic(topic)
    .build();

我收到错误无法解析符号消息"

也行

String response = FirebaseMessaging.getInstance().send(message);

当我 Ctrl+单击 send() 方法时，参数 message 显示为 RemoteMessage 的实例，而不是返回的 Messagevoid 的类型而不是 String

When I Ctrl+click the send() method, the argument message is being shown as instance of RemoteMessage and not Message with return type of void and not String

我是否缺少任何依赖项，或者最新的 firebase 消息传递库中的实现是否有任何变化?

Am I missing any dependencies or is there any change in implementation in the latest library of firebase messaging?

我在我的应用级别 build.gradle

implementation 'com.google.firebase:firebase-messaging:19.0.1'
implementation 'com.google.firebase:firebase-core:17.0.1'

推荐答案

Message 类在 Firebase admin sdk 中，但你不能在你的 android 项目中使用它，你只能使用 firebase admin sdk在服务器端，然后您将能够使用 Message 类.检查文档以供参考:-

The Message class is inside the Firebase admin sdk but you cannot use that in your android project, you can only use firebase admin sdk in the server side and then you will be able to use the Message class. Check the docs for reference:-

https://firebase.google.com/docs/cloud-messaging/管理主题

为了能够使用 admin sdk，你需要一个像 Tomcat 这样的服务器，你也应该使用 java 版本 8，然后你可以按照以下教程进行操作:-

To be able to use the admin sdk, you need a server like Tomcat, you should also use java version 8, then you can follow the following tutorial:-

https://firebase.google.com/docs/admin/setup/#先决条件

原答案

你需要使用RemoteMessage类，例如:

RemoteMessage message = RemoteMessage.builder()
    .addData("score", "850")
    .addData("time", "2:45")
    .build();

点击这里了解更多信息:

Check here for more information:

https://firebase.google.com/docs/reference/android/com/google/firebase/messaging/RemoteMessage

https://firebase.google.com/docs/reference/android/com/google/firebase/messaging/RemoteMessage.Builder.html

相关文章