当app在背景中时，Nativescript firebase振动

Question

当应用程序处于后台时，firebase插件未调用 onMassageReceived ，并且在收到通知时无法添加振动。我怎么解决这个问题？

import firebase = require("nativescript-plugin-firebase");
var vibrator = require("nativescript-vibrate");

firebase.init({
    url: AppUrl
}).then(
    (instance) => {
        console.log("firebase.init done true");
    },
    (error) => {
        console.log("firebase.init error: " + error);
    }
);

firebase.addOnMessageReceivedCallback((message:any)=>{
    vibrator.vibration(500);
});