How can I access the Google accessToken and idToken with expo-google-signIn?

Expo SDK
1

Hey guys, this might sound like a pretty mundane question, but how would I access the idToken and accessToken returned with the expo-google-sign-in library?

When I console.log(user) it gives me a null accessToken and idToken, but I notice that these are in fact declared within the classes of this library. Do I need to add a specific scope or parameter to my request for this?

Any help would be appreciated.

Thanks,
David

1 Like
2

Hmmā€¦they should be available under this class. Not sure why youā€™d be getting null for both, unless something is going wrong in the authentication.

Does signInAsync return with type: 'success'?

3

When I log user data returned when type===ā€˜successā€™, there is an accesstoken, but the idToken shows as null. Refresh token, token expiry are all null as well.

Am I doing something wrong?

4

Any clientID?

5

I pass in a clientID as a prop to initAsync if thatā€™s what you mean

6

Iā€™m wondering the same thing. Am I right in saying thereā€™s no need to even pass the clientId in for Android? Iā€™m trying to get this to work so that I can pass the idToken and accessToken to sign in to Firebase. I also get a ā€œsuccessā€ but idToken is null.

7

Try adding some scopes maybe? Itā€™s just really weird. OAuth should be returning clientID but itā€™s not. Maybe somethingā€™s wrong with the module

8

@davidli3100, have you got it working now?

9

Nope, still returns as null for me. Iā€™m going to try and make a PR to the expo package

10

Itā€™s still not returning an idToken even after I made a new firebase project and added a new client ID. Am I doing something wrong?

11

For anyone who finds his thread. You must access the tokens via user.auth.idToken and user.auth.accessToken:

// Block 1
try {
  await GoogleSignIn.initAsync();
} catch ({ message }) {
  alert('GoogleSignIn.initAsync(): ' + message);
}

// Block 2
try {
  await GoogleSignIn.askForPlayServicesAsync();
  const { type, user } = await GoogleSignIn.signInAsync();
  if (type === 'success') {
    alert(JSON.stringify(user.auth.idToken));
  } else {
    alert(type);
  }
} catch (error) {
  alert('login: Error:\n' + error.message + '\n' + JSON.stringify(error));

See accessToken and idToken are undefined when calling GoogleSignIn.signInAsync() Ā· Issue #4762 Ā· expo/expo Ā· GitHub

12

Is your idToken returned as null?

13

Hi @davidli3100, nope, got it working now finally. See the github issue for the latest code.

14

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