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Firebase + Flutter - Cloud functions onCall result in "unauthenticated" error from Android app

By : mori yuvraj
Date : October 17 2020, 06:10 AM
hop of those help? The problem was using Node 10 when deploying to cloud functions.
Node 10 is currently in beta. Switched down to node 8 and it works fine:
code :
  "engines": {
    "node": "10"
  "engines": {
    "node": "8"

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How to test `functions.https.onCall` firebase cloud functions locally?

By : avinash_chouhan
Date : March 29 2020, 07:55 AM
I hope this helps you . I can't seem to find the solution for this in the Firebase Documentation. , For locally you must call (after firebase.initializeApp)
code :

Firebase + Cloud functions dynamic onCall

By : user1802914
Date : March 29 2020, 07:55 AM
it helps some times You can't use a callable function to deliver ongoing results. You must return a single set of results from onCall, then the function terminates. If you require more updates, you have to call the function again, but it's better if the client can use the Firebase SDKs to query the database directly and listen to the results as they change.

What is the proper way to get return value from Firebase Cloud Functions onCall method in Android?

By : user2864354
Date : March 29 2020, 07:55 AM
should help you out result.getData() is returning a Map type object, because you returned an object from the function. JavaScript objects become Java Maps. You just use it like you would any other Map.
code :
Map<String, Object> data = (Map<String, Object>) result.getData();
String message = (String) data.get("message");
boolean verified = (Boolean) data.get("verified");

How to catch cloud functions onCall functions.https.HttpsError by Flutter with cloud_functions package

By : Kevin Wu
Date : March 29 2020, 07:55 AM
wish helps you There is a call function implementation in Dart docs. If you take a look on it CloudFunctionsException is thrown only when exception property code == 'functionsError'.
With functions.https.HttpsError you are code from the first parameter( 'failed-precondition' in the example). Unfortunately HttpError has limited possible values of error codes and "functionsError" is not in the list.

Firebase Cloud Functions Call : error : Object message : "Bad Request" status : "INVALID_ARGUMENT"

By : Robert McCallum
Date : March 29 2020, 07:55 AM
To fix this issue in the end this was mostly json knowledge that missed me
my body should have data included
code :
exports.addAdminRole = functions.https.onCall((data, context) => {
    const dataParsed = JSON.parse(data);

    // get user
    return admin.auth().getUserByEmail(dataParsed.email).then(user => {
        // if not already (admin)
        if(user.customClaims && (user.customClaims).admin === true) {
            console.log(dataParsed.email + " is already an Admin");
        // add custom claim (admin)
        return admin.auth().setCustomUserClaims(user.uid, {
            admin: true
    }).then(() => {
        return {
            message: `Bravo : ${dataParsed.email} is now an Admin`
    }).catch(err => {
        return err;
function httpAddAdminRole(mail) {

    const initRequest = {
        method: 'POST',
        headers: {
            Accept: 'application/json',
            'Content-Type': 'application/json'
                email: mail


    return fetch('https://us-central1-my-project.cloudfunctions.net/addAdminRole', initRequest)
      .catch(err => console.log(err))
      .then(res => res.json())
      .then(parsedRes => {
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