How can I call local Firebase Functions (in Emulator) from Flutter?

Question

I set up Cloud Functions in the local emulator. I wrote a few functions and tested them in the browser with the function emulator. Now I am trying to call these functions from my local Flutter app without deploying them. However, i cannot find a way to connect my Flutter App to the localhost API of the functions. Is there anyway to do that?

Cameron McClymont · Accepted Answer · 2024-12-23 00:03:35Z

7

In steps:

Import the package:

import 'package:cloud_functions/cloud_functions.dart';

Create an instance:

static final _functions = FirebaseFunctions.instance;

Wire it up to the emulator:

final origin = Platform.isAndroid ? 'http://10.0.2.2:5001' : 'http://localhost:5001';
_functions.useFunctionsEmulator(origin: origin);

Also see:

Error connecting to local Firebase functions emulator from Flutter app
The code for the useFunctionsEmulator function in the Github repo.
The documentation on calling a callable function from Flutter, which includes a code sample.

edited Dec 23, 2024 at 0:03

Cameron McClymont

952 silver badges7 bronze badges

answered Jul 20, 2020 at 15:05

Frank van Puffelen

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1 Comment

edalvb Over a year ago

Must be instantiated from "FirebaseFunctions", no longer from "CloudFunctions"

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