Question

我试图在我的项目中使用firebase实现推送通知但是无法这样做.Below是我的index.js文件，我对javascript和nodejs知之甚少，那就是为什么不能弄清楚问题。

     'use strict'

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();


    exports.sendNotification = functions.database.ref('/Notifications/{receiver_id}/{notification_id}').onWrite((data,context) =>
    {
      const receiver_id = context.params.receiver_id;
      const notification_id = context.params.notification_id;
      console.log('We have new notification to send to : ', receiver_id);



        /*if(!context.data.val()){

            return console.log('A notification has been deleted from the databse : ', notification_id);
        }*/

    const deviceToken = admin.database().ref(`Users/${receiver_id}/device_token`).once('value');

    return deviceToken.then(result => {

        const token_id = result.val();

        const payload = {
                notification: {

                    title : "Friend Request",
                    body : "You've received a new Friend Request",
                    icon : "default"
                }
        };

        return admin.messaging().sendToDevice(token_id,payload).then(response => {

            console.log('This was the notification feature');
            return true;

        });


    });

});

任何人都可以向我解释这段代码并帮助解决我的问题。

Answer 1

每个设备都有不同的令牌。似乎您只为一个用户存储一个令牌。这就是您可以将通知仅发送到一台设备的原因。如果要将其发送到多个设备，则必须存储多个设备令牌，并将通知发送给所有这些设备。

Firebase推送通知未发送到第二台设备

1 个答案: