I/flutter (31065): No implementation found for method init on channel plugins.flutter.io/google_sign_in

Question

I've been trying to implement google_sign_in library for almost two days now. I have done all necessary configurations from both localhost and the firebase console.

Dependencies:

  firebase_analytics: ^5.0.2
  firebase_auth: ^0.14.0+5
  cloud_firestore: ^0.13.5
  flutter_facebook_login: ^3.0.0
  mvc_pattern: ^5.0.0
  flutter_screenutil: ^0.5.3
  google_sign_in: ^4.4.4

Below is the _googleSignUp() custom function.

Future<void> _googleSignUp() async {
      try {
        final GoogleSignIn _googleSignIn = GoogleSignIn(
          scopes: [
            'email',
            'https://www.googleapis.com/auth/contacts.readonly',
          ],
          hostedDomain: '',
          clientId: '',
        );

        final FirebaseAuth _auth = FirebaseAuth.instance;
        final GoogleSignInAccount googleUser = await _googleSignIn.signIn();
        final GoogleSignInAuthentication googleAuth =
            await googleUser.authentication;
        final AuthCredential credential = GoogleAuthProvider.getCredential(
            idToken: googleAuth.accessToken, accessToken: googleAuth.idToken);
        final FirebaseUser user =
            (await _auth.signInWithCredential(credential)).user;
        print('Current user: ${user.displayName}');

        return user;
      } catch (e) {
        print(e.message);
      }
    }

The problem is, whenever I trigger the _googleSignUp() funtion with a button click, I keep getting this log below and then nothing happens.

I/flutter (31065): No implementation found for method init on channel plugins.flutter.io/google_sign_in

Developers how do we fix this? Thank you.

score 1 · Answer 1 · answered May 28 '20 at 05:22

1

After dealing with this problem for an entire day, I realized the google_sign_in throws that exception if you also have the flutter_facebook_login plugin but haven't configured it as per these instructions.

Nonsensical error message had me going in circles.

answered May 28 '20 at 05:22

Kenji Kina

2,402
3
22
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I hage same issue. you solve my problem. – Tom Dec 23 '20 at 19:08
This should be considered the answer. Thx! – Murilo Pereira Apr 23 '21 at 14:44

score 0 · Answer 2 · answered Apr 23 '20 at 21:23

0

Upgrade the flutter_auth plugin to the latest version:

dependencies:
  firebase_auth: ^0.16.0

https://pub.dev/packages/firebase_auth#-installing-tab-

answered Apr 23 '20 at 21:23

Peter Haddad

78,874
25
140
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are you using the stable channel? – Peter Haddad Apr 23 '20 at 21:41
check this https://stackoverflow.com/questions/48360060/missingpluginexceptionno-implementation-found-for-method-init-on-channel-plugin – Peter Haddad Apr 23 '20 at 21:41
Yes I have seen that question and tried the solutions multiple times already but still doesn't work. – James Mwase Apr 23 '20 at 21:54

Lamis Youssef · Answer 3 · 2020-12-05T21:27:16.440

What worked for me is changing the AppDelegate.swift file in the ios/Runner folder to:


import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

I/flutter (31065): No implementation found for method init on channel plugins.flutter.io/google_sign_in

3 Answers3