PlatformException(sign_in_failed, com.google.android.gms.common.api.ApiException: 10: , null)

Question

I've searched the whole internet, tried every possible solution, still I'm not being able to sign in using GoogleSignIn from my flutter app.

Things I've tried :
1. Added SHA-1 Certificate
2. Added SHA-256 Certificate
3. Filled O-Auth Screen
4. Enabled GoogleSignIn in firebase
5. Added support email

Testing currently only in debug mode. As the app is in its initial stages right now I don't want to build a release version yet. Using debug SHA-1 and SHA-256 fingerprints.

Future<FirebaseUser> _signIn(BuildContext context) async {
final GoogleSignInAccount googleUser = await _googleSignIn.signIn();
final GoogleSignInAuthentication googleAuth =
    await googleUser.authentication;

final AuthCredential credential = GoogleAuthProvider.getCredential(
    accessToken: googleAuth.accessToken, idToken: googleAuth.idToken);

AuthResult userDetails =
    await _firebaseAuth.signInWithCredential(credential);
ProviderDetails providerInfo = 
ProviderDetails(userDetails.user.providerId);

List<ProviderDetails> providerData = List<ProviderDetails>();
providerData.add(providerInfo);

UserDetails details = UserDetails(
    providerDetails: userDetails.user.providerId,
    userEmail: userDetails.user.email,
    userName: userDetails.user.displayName,
    photoUrl: userDetails.user.photoUrl,
    providerData: providerData);

return userDetails.user;
}

Error I get

[ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: 
PlatformException(sign_in_failed, 
com.google.android.gms.common.api.ApiException: 10: , null)
E/flutter (12322): #0      StandardMethodCodec.decodeEnvelope 
package:flutter/…/services/message_codecs.dart:564
E/flutter (12322): #1      MethodChannel.invokeMethod 
package:flutter/…/services/platform_channel.dart:316
E/flutter (12322): <asynchronous suspension>
E/flutter (12322): #2      MethodChannel.invokeMapMethod 
package:flutter/…/services/platform_channel.dart:344
E/flutter (12322): <asynchronous suspension>
E/flutter (12322): #3      GoogleSignIn._callMethod 
package:google_sign_in/google_sign_in.dart:218
E/flutter (12322): <asynchronous suspension>
E/flutter (12322): #4      GoogleSignIn._addMethodCall.<anonymous closure> 
package:google_sign_in/google_sign_in.dart:27
E/flutter (12322): #5      _rootRun  (dart:async/zone.dart:1120:38)
E/flutter (12322): #6      _CustomZone.run  (dart:async/zone.dart:1021:19)
E/flutter (12322): #7      _FutureListener.handleWhenComplete  
(dart:async/future_impl.dart:150:18)
E/flutter (12322): #8      
Future._propagateToListeners.handleWhenCompleteCallback  
(dart:async/future_impl.dart:609:39)
E/flutter (12322): #9      Future._propagateToListeners   
(dart:async/future_impl.dart:665:37)
E/flutter (12322): #10     Future._addListener.<anonymous closure>  
(dart:async/future_impl.dart:348:9)
E/flutter (12322): #11     _rootRun  (dart:async/zone.dart:1124:13)
E/flutter (12322): #12     _CustomZone.run  (dart:async/zone.dart:1021:19)
E/flutter (12322): #13     _CustomZone.runGuarded  
(dart:async/zone.dart:923:7)
E/flutter (12322): #14     _CustomZone.bindCallbackGuarded.<anonymous 
closure>  (dart:async/zone.dart:963:23)
E/flutter (12322): #15     _microtaskLoop  
(dart:async/schedule_microtask.dart:41:21)
E/flutter (12322): #16     _startMicrotaskLoop  
(dart:async/schedule_microtask.dart:50:5)
E/flutter (12322):

Answer 1

I know this question was posted quite some time ago but in case anybody else had issues, in addition to all of the above steps, I also enabled Google People API. Make sure that you are on the right email and project.

https://console.developers.google.com/apis/library/people.googleapis.com?q=people&id=5877a7af-1d13-4098-a53e-b5e2d7a87a4f&project=phamton-test

Answer 2

Did you rebuild the project after adding the dependencies?

Sometimes you need to rebuild your project whenever you add any platform specific plugin before it can be used effectively

Answer 3

So as regards to this error, if you find yourself facing it at any point.

There are 2 things that could possibly be wrong

1. Your app is not on the playstore and you're testing locally with a signed app.

2. You should probably go and add more SHA keys, if you have only SHA-1 go ahead and put SHA-256. Also be weary of your test environment as it could also mean that your apk mode(Testing or Production) is not correlating.