Flutter firebase connect to emulator from real device

Question

Hi I am currently using firebase's local emulator and flutter. However, I am using a real device and not a simulator therefore I do not know how to connect to my laptops localhost. I am currently using this code

  // [Firestore | localhost:8080]
  FirebaseFirestore.instance.settings = const Settings(
    host: "localhost:8080",
    sslEnabled: false,
    persistenceEnabled: false,
  );

  // [Authentication | localhost:9099]
  await FirebaseAuth.instance.useEmulator("http://localhost:9099");

  FirebaseFunctions.instance.useFunctionsEmulator(
      origin: "http://localhost:5001"
  );

  // [Storage | localhost:9199]
  await FirebaseStorage.instance.useEmulator(
    host: "localhost",
    port: 9199,
  );

GILO · Accepted Answer · 2021-06-14 17:56:53Z

8

Ok I fixed the problem by these two steps:

firebase.json:

{
  ...
  "emulators": {
    "auth": {
      "host": "0.0.0.0", <--- Adding host
      "port": 9099
    },
    "functions": {
      "host": "0.0.0.0",
      "port": 5001
    },
    "firestore": {
      "host": "0.0.0.0",
      "port": 8080
    },
    "storage": {
      "host": "0.0.0.0",
      "port": 9199
    },
    "ui": {
      "enabled": true
    }
  },
  ...
}

flutter main.dart:

const String localIp = "You local ip goes here";



FirebaseFirestore.instance.settings = const Settings(
  host: localIp+":8080",
  sslEnabled: false,
  persistenceEnabled: false,
);

await FirebaseAuth.instance.useEmulator("http://"+localIp+":9099");

FirebaseFunctions.instance.useFunctionsEmulator(
    origin: "http://"+localIp+":5001"     
);

await FirebaseStorage.instance.useEmulator(
  host: localIp,
  port: 9199,
);

answered Jun 14, 2021 at 17:56

GILO

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3 Comments

maganap Over a year ago

Thanks! Remember to consider the region if your local functions are set up to a specific region: FirebaseFunctions.instanceFor(region: 'europe-west1').useFunctionsEmulator('192.168.50.43', 5001); cloud_functions@^3.0.3 syntax

Paul Over a year ago

No http://... is actually needed. Your IP address is already enough!

Yasir Arefin Tusher Over a year ago

I do not found the firebase.json file in my project directory. Can you help?

F.M.F. · Accepted Answer · 2024-07-03 16:10:28Z

0

Besides the accepted answer, do not forget to also allow unencrypted traffic in your AndroidManifest.xml when developing for Android. See this answer, on how to do it.

answered Jul 3, 2024 at 16:10

F.M.F.

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