应用程序运行android时未接收云Firestore通知

Question

下面是我的函数的简化版本：

    'use strict'


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


exports.sendNotification = functions.database.ref('/Notifications/{receiver_user_id}/{notification_id}')
.onWrite((data, context) =>
{
    const receiver_user_id = context.params.receiver_user_id;
    const notification_id = context.params.notification_id;


console.log('We have a notification to send to :' , receiver_user_id);


if (!data.after.val()) 
{
    console.log('A notification has been deleted :' , notification_id);
    return null;
}

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

return DeviceToken.then(result => 
{
    const token_id = result.val();

    const payload = 
    {
        notification:
        {
            title: "New Chat Request",
            body: `You have a new chat Request`,
            icon: "default"
        }
    };

    return admin.messaging().sendToDevice(token_id, payload)
    .then(response => 
        {
            console.log('This was a notification feature.');
        });
});
});

我没有任何特定的java代码，因为我现在只需要显示通知。有没有人想过用一种简单的方法来存档这个问题？

Answer 1

FCM通知在应用程序后台时由系统处理，并显示在Android上的系统托盘中。如果要在应用程序处于活动状态时处理通知，则必须通过重写OnMessageReceived来编写相应的代码。

另请参阅：

• 应用程序在前台时如何处理火场通知