Facebook Login With Flutter

Question

Future<FirebaseUser> login({List<String> userData, var loginCallback, var cancelledCallback,
        var errorCallback}) async {
    var facebookLogin = FacebookLogin();
    var facebookLoginResult = await facebookLogin.logInWithReadPermissions(['email']);
    switch (facebookLoginResult.status) {
      case FacebookLoginStatus.error:
        print("Error");
        break;
      case FacebookLoginStatus.cancelledByUser:
        print("CancelledByUser");
        break;
      case FacebookLoginStatus.loggedIn:
        print("LoggedIn");
        break;
    }
  }

Using flutter_facebook_login plugin and it always throws this error.Couldn't figure out where am i going wrong. Here is the logcat for the error.

MissingPluginException(No implementation found for method loginWithReadPermissions on channel com.roughike/flutter_facebook_login)
E/flutter ( 6174): #0      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter ( 6174): <asynchronous suspension>
E/flutter ( 6174): #1      FacebookLogin.logInWithReadPermissions (package:flutter_facebook_login/flutter_facebook_login.dart:101:23)
E/flutter ( 6174): <asynchronous suspension>
E/flutter ( 6174): #2      FacebookAuth.login (package:shout_out/util/social_login.dart:26:25)

Hope u reinstalled/restarted the app. Hot recode will have the above problem — Dinesh Balasubramanian, Aug 18 '18 at 08:24
Still get an error. In my logcat The SDK has not been initialized, make sure to call FacebookSdk.sdkInitialize() first. Caused By at io.flutter.plugins.GeneratedPluginRegistrant.registerWith(GeneratedPluginRegistrant.java:19)at com.ujjwalmainali.shoutout.MainActivity.onCreate(MainActivity.java:11)at io.flutter.plugins.GeneratedPluginRegistrant.registerWith(GeneratedPluginRegistrant.java:19) at com.ujjwalmainali.shoutout.MainActivity.onCreate(MainActivity.java:11) — ujjwal mainali, Aug 18 '18 at 11:02
okay i solved it by adding the app_id in AndroidManifest.xml file inside tag. thanks for your answer. it was due to hot restart. — ujjwal mainali, Aug 18 '18 at 11:08

Jaswant Singh · Answer 1 · 2018-08-18T11:36:13.213

9

MissingPluginException usually occurs when you add a plugin and doesnt re-run your app from the start.

Try to kill your application and again run it. The problem will go away.

Edit

Facebook sdk for flutter requires to have some additions in your manifest file (For android), the changes are documented in the plugin documentation.

edited Aug 18 '18 at 11:36

answered Aug 18 '18 at 10:25

Jaswant Singh

9,900
8
29
50

score 2 · Answer 2 · answered Mar 26 '19 at 18:49

AndroidX support #

if you don't know what android X is, Simply use this one (1.2.0) and the Error will be Solved

if you want to avoid AndroidX, use version 1.2.0.

• flutter_facebook_login: ^1.2.0

if you want to use the latest version please refer about Android X

for AndroidX Flutter projects, use versions 2.0.0 and up.

• flutter_facebook_login: ^2.0.0

score 1 · Answer 3 · answered Aug 25 '20 at 13:07

1

For android studio go to the file > invalidate caches / restart.....

it is working for me so, I hope it will work for you...

answered Aug 25 '20 at 13:07

Mohit Modh

335
3
4

score 0 · Answer 4 · answered Aug 01 '22 at 09:58

0

Check Your Facebook Developer Account and make sure all the functionality you have linked with firebase or not Then try

answered Aug 01 '22 at 09:58

Dhiraj Singh

11
2

Facebook Login With Flutter

4 Answers4