darwin-morocho
Login fails on iOS PlatformException(FAILED, The operation couldn’t be completed. (com.facebook.sdk.core error 8.), null, null)
What version are you using?
7.0.1
What OS and version are you using to local deploy your application?
macOS 14.5
What platforms are you seeing the problem on?
iOS
pubspec.yaml
dependencies:
flutter:
sdk: flutter
flutter_localizations:
sdk: flutter
# Getx
get: ^4.6.6
get_storage: ^2.1.1
# Firebase
firebase_core: ^2.27.2
firebase_messaging: ^14.9.4
firebase_analytics: ^10.9.0
firebase_remote_config: ^4.3.19
# Socials
google_sign_in: ^6.2.1
flutter_facebook_auth: ^7.0.1
sign_in_with_apple: ^6.1.1
# Modals and popups
modal_bottom_sheet: ^3.0.0-pre
adaptive_dialog: ^2.1.0
flutter_platform_alert: ^0.5.1
toastification: ^1.2.1
http: ^1.2.1
flutter_native_splash: ^2.4.0
intl: ^0.19.0
custom_check_box: ^0.0.4
share_plus: ^7.2.2
url_launcher: ^6.2.5
font_awesome_flutter:
flutter_html: ^3.0.0-beta.2
jovial_svg: ^1.1.20
flutter_spinkit: ^5.2.0
flutter_form_builder: ^9.2.1
form_builder_validators: ^11.0.0
shimmer: ^3.0.0
fancy_shimmer_image: ^2.0.3
infinite_scroll_pagination: ^4.0.0
app_tracking_transparency: ^2.0.4
package_info_plus: ^4.0.2
version: ^3.0.2
store_redirect: ^2.0.2
cached_network_image: ^3.3.1
easy_localization: ^3.0.5
image_picker: ^1.1.0
file_picker: ^8.0.1
flutter_avif: ^2.3.0
flutter_keyboard_visibility: ^6.0.0
timezone: ^0.9.2
expand_tap_area: ^1.1.1
scroll_to_index: ^3.0.1
rive: ^0.13.7
app_settings: ^5.1.1
permission_handler: ^11.3.0
flutter_quill: ^9.4.6
flutter_quill_extensions: ^9.4.6
vsc_quill_delta_to_html: ^1.0.3
animated_page_transition:
git: https://github.com/DavidHajum/animated_page_transition.git
dots_indicator: ^3.0.0
auto_size_text: ^3.0.0
flutter_phoenix: ^1.1.1
feather_icons_svg:
git:
url: "https://github.com/FrazeColder/feather_icons_svg"
dotted_border: ^2.1.0
flutter_countdown_timer: ^4.1.0
flutter_verification_code: ^1.1.7
app_links: ^5.0.0
app_badge_plus: ^1.0.0
flutter_widget_from_html: ^0.15.1
html: ^0.15.4
flutter_lightbox: ^0.1.3
flutter_slidable: ^3.1.1
cupertino_icons: ^1.0.6
dependency_overrides:
flutter_inappwebview_android:
git:
url: https://github.com/holzgeist/flutter_inappwebview
path: flutter_inappwebview_android
ref: d89b1d32638b49dfc58c4b7c84153be0c269d057
Describe the Bug
I get this error, when I try to log in on iOS:
PlatformException(FAILED, The operation couldn’t be completed. (com.facebook.sdk.core error 8.), null, null)
I followed this instruction for the setup and tried this suggestion on StackOverflow, but no luck so far.
My code currently looks like this:
final LoginResult result = await FacebookAuth.instance.login();
final userData = await FacebookAuth.instance.getUserData();
if (result.accessToken != null) {
do more stuff ...
The login functionality works without problems on Android.
I'm using a test account to log in.
Expected Behavior
The login function returns normally
To Reproduce
Make a login call
Relevant log output
No response
flutter doctor -v
[✓] Flutter (Channel stable, 3.22.2, on macOS 14.5 23F79 darwin-arm64, locale en-DE)
• Flutter version 3.22.2 on channel stable at /Users/david/Desktop/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 761747bfc5 (7 weeks ago), 2024-06-05 22:15:13 +0200
• Engine revision edd8546116
• Dart version 3.4.3
• DevTools version 2.34.3
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
• Android SDK at /Users/david/Library/Android/sdk
• Platform android-34, build-tools 33.0.2
• ANDROID_HOME = /Users/david/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11609105)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 15F31d
• CocoaPods version 1.15.2
[✗] Chrome - develop for the web (Cannot find Chrome executable at /Applications/Google Chrome.app/Contents/MacOS/Google
Chrome)
! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[✓] Android Studio (version 2024.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11609105)
[✓] VS Code (version 1.91.1)
• VS Code at /Users/david/Desktop/setups/Visual Studio Code.app/Contents
• Flutter extension version 3.92.0
[✓] Connected device (3 available)
• iPhone 15 (mobile) • 39C4731E-F868-4097-BFC0-3A0BA258AA72 • ios •
com.apple.CoreSimulator.SimRuntime.iOS-17-5 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 14.5 23F79 darwin-arm64
• Mac Designed for iPad (desktop) • mac-designed-for-ipad • darwin • macOS 14.5 23F79 darwin-arm64
[✓] Network resources
• All expected network resources are available.
Info.plist (iOS)
No response
Podfile (iOS)
No response
AndroidManifest.xml
No response
MainActivity.java
No response
MainActivity.kt
No response
index.html
No response
Info.plist (macOS)
No response
@darwin-morocho A same issue facing.
Error
flutter: AccessTokenType.limited [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(FAILED, The operation couldn’t be completed. (com.facebook.sdk.core error 8.), null, null)
@DavidHajum try this version 6.0.0 for temporary solution. working for me.
I'm experiencing a similar issue.
Seems that the sign in options are what fails, ex. signInWithCredential
Same problem still continue.There is no issue in version 6.2.0, but there is an issue in version 7.0.2. It happens when trying to log in with the limited.facebook.com domain.
Dart Code:
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_facebook_auth/flutter_facebook_auth.dart';
class LoginPage extends StatefulWidget {
const LoginPage({super.key});
@override
State<LoginPage> createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
final _auth = FacebookAuth.instance;
late LoginPageState _state;
@override
void initState() {
super.initState();
_init();
}
Future<void> _init() async {
setState(() {
_state = LoginLoading();
});
final accessToken = await _auth.accessToken;
if (accessToken != null) {
await _getUserProfile(accessToken.tokenString);
} else {
setState(() {
_state = LoginNotAuthenticated();
});
}
}
Future<void> _getUserProfile(String accessToken) async {
final data = await _auth.getUserData();
if (data.isEmpty) {
await _logout();
return;
}
setState(() {
_state = LoginSuccessful(
User(
userId: data['id'] as String,
accessToken: accessToken,
name: data['name'] as String,
pictureProfile: data['picture']?['data']?['url'] as String,
email: data['email'] as String,
),
);
});
}
Future<void> _logout() async {
await _auth.logOut();
setState(() {
_state = LoginNotAuthenticated();
});
}
Future<void> _login() async {
setState(() {
_state = LoginLoading();
});
final result = await _auth.login(
loginTracking: LoginTracking.limited,
);
switch (result.status) {
case LoginStatus.success:
await _getUserProfile(result.accessToken!.tokenString);
case LoginStatus.cancelled:
case _:
setState(() {
_state = LoginNotAuthenticated();
});
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: SizedBox(
width: double.infinity,
height: double.infinity,
child: Column(
children: [
ElevatedButton(
onPressed: () {
_logout();
},
child: Text("logout")),
Center(
child: switch (_state) {
LoginLoading() => const CircularProgressIndicator(),
LoginNotAuthenticated() => ElevatedButton(
onPressed: _login,
child: const Text('Login'),
),
LoginSuccessful(user: final User user) => Text(
prettyPrint(
user.toJson(),
),
),
},
),
],
),
),
);
}
}
// Abstract base class representing login page states
sealed class LoginPageState {}
// State representing the login page is loading
class LoginLoading extends LoginPageState {}
// State representing the user is not logged in
class LoginNotAuthenticated extends LoginPageState {}
// State representing the user is successfully logged in
class LoginSuccessful extends LoginPageState {
final User user;
LoginSuccessful(this.user);
}
class User {
final String userId;
final String accessToken;
final String name;
final String? pictureProfile;
final String? email;
User({
required this.userId,
required this.accessToken,
required this.name,
required this.pictureProfile,
required this.email,
});
Map<String, dynamic> toJson() => {
'userId': userId,
'name': name,
'accessToken': accessToken,
'pictureProfile': pictureProfile,
'email': email,
};
}
String prettyPrint(Map json) {
JsonEncoder encoder = new JsonEncoder.withIndent(' ');
String pretty = encoder.convert(json);
return pretty;
}
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(FAILED, The operation couldn’t be completed. (com.facebook.sdk.core error 8.), null, null)
#0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:648:7)
message_codecs.dart:648
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
platform_channel.dart:334
<asynchronous suspension>
#2 FacebookAuthPlatformImplementation.getUserData (package:flutter_facebook_auth_platform_interface/src/facebook_auth_implementation.dart:84:20)
facebook_auth_implementation.dart:84
<asynchronous suspension>
#3 FacebookAuth.getUserData (package:flutter_facebook_auth/flutter_facebook_auth.dart:70:20)
flutter_facebook_auth.dart:70
<asynchronous suspension>
#4 _LoginPageState._getUserProfile (package:flutter_riverpod_template/new_page.dart:41:18)
new_page.dart:41
<asynchronous suspension>
#5 _LoginPageState._login (package:flutter_riverpod_template/new_page.dart:78:9)
new_page.dart:78
<asynchronous suspension>
I had the same problem. I solved it using the following code.
- Check AppTrackingTraspareny status (app_tracking_transparency package)
- Handle facebook login permission & loginTracking
TrackingStatus? status;
if (Platform.isIOS) {
status = await AppTrackingTransparency.trackingAuthorizationStatus;
}
final LoginResult result = await FacebookAuth.instance.login(
permissions: ['email', if (Platform.isAndroid || status == TrackingStatus.authorized) 'public_profile'],
loginBehavior: LoginBehavior.nativeWithFallback,
loginTracking: status == TrackingStatus.authorized ? LoginTracking.enabled : LoginTracking.limited,
);
I stumbled on this issue today as well as a result of upgrading the package.
As far as I understand, getUserData cannot be used with Limited login as it goes over Graph API and the token received from Limited Login just does not work with Graph API.
Tracking status can be indeed used to toggle between Limited and normal login, however that is not acceptable solution as in case Limited Login various profile information seems to be missing (name, email, profile picture, etc). Or at least I do not find currently any place to where it is populated.
As per Facebook documentation (https://developers.facebook.com/docs/facebook-login/limited-login/ios/) in case of Limited Login it is possible specify permissions and as a result some profile information is populated for a successful login (https://developers.facebook.com/docs/facebook-login/limited-login/ios/#implement-limited-login).
Currently I do not understand where in flutter_facebook_auth this populated profile information is available. Is it populated at all @darwin-morocho ?
version: 7.1.1
i can reproduce in ios real device (simulator is fine)
workaround: only get [email] instead of ['email', 'public_profile']
final result = await _auth.login(
permissions: ['email'],
loginTracking: LoginTracking.limited,
nonce: _nonce,
);
flutter_facebook_auth: ^7.0.0 facebook_auth_desktop: ^2.0.0 flutter_facebook_auth_web: ^6.0.0
facing login issue on iOS real device okay on the simulator. Testing device: iPhone SE(iOS 15.5)
Is there any solution to this, i have tried all possible ways but am still facing this issue. I can't downgrade the package version, have dependency.
flutter: Facebook login error: PlatformException(FAILED, The operation couldn’t be completed. (com.facebook.sdk.core error 8.), null, null)
My Current implementaion -->
static Future<User?> loginWithFacebook() async { FacebookAuth facebookAuth = FacebookAuth.instance; bool isLogged = await facebookAuth.accessToken != null; if (!isLogged) { LoginResult result = await facebookAuth.login(permissions: [ 'public_profile', 'email', ]); // by default we request the email and the public profile if (result.status == LoginStatus.success) { // you are logged await facebookAuth.accessToken; final userData = await FacebookAuth.i.getUserData(); log('Userdata: ${userData.toString()}'); return await mapFacebookUserData(userData); } else { print('Login failed: ${result.status}'); print('Message: ${result.message}'); } } else { await facebookAuth.accessToken; final userData = await FacebookAuth.i.getUserData(); return await mapFacebookUserData(userData); } return null; }
Any help will be very helpful.
@davidsturm96 @lukeirvin @tannker @WingCH @malikdoksoz @AadarshaSadan
If the user has not granted IDFA permission, calling await FacebookAuth.instance.getUserData() will result in the error (com.facebook.sdk.core error 8.).
Therefore, do not call getUserData if the user hasn't authorized IDFA.
To retrieve Facebook user information, you can instead use a backend service to handle it — pass the access token to your server and let the backend parse the user info or call the appropriate Facebook API directly.
Explanation of the Facebook Login error:
Due to Apple’s privacy policy — specifically the App Tracking Transparency (ATT) framework — the Facebook SDK on iOS introduces a Limited Login mode. The SDK automatically switches login behavior based on whether the user has granted IDFA (App Tracking) permission.
After investigating the Facebook Login SDK source code and behavior, we found:
-
When the user does not grant IDFA permission (i.e., denies App Tracking), the Facebook SDK automatically enables Limited Login mode. In this mode:
- The login result does not return an
AccessToken(i.e.,token == nil); - Instead, it returns an
AuthenticationToken, which is only used for identity verification (not for accessing APIs); - Calling
getUserDatain this mode will fail or return empty data, and may result in an error.
- The login result does not return an
-
For users in Limited Login mode, user information parsing and login verification must be handled on the backend:
- Use the
AuthenticationTokenandnoncereturned by the SDK; - Follow the OpenID Connect flow to validate the token with Facebook servers and retrieve user info;
- If the user refuses IDFA authorization, the app must proceed via Limited Login, and the backend must handle the
AuthenticationTokenaccordingly.
- Use the
For more detailed information and implementation guidance, please refer to the official Facebook documentation: https://developers.facebook.com/docs/facebook-login/limited-login
LoginTracking tracking = LoginTracking.enabled;
final status = await AppTrackingTransparency.trackingAuthorizationStatus;
if (Platform.isIOS) {
if (status != TrackingStatus.authorized) {
tracking = LoginTracking.limited;
}
}
final LoginResult result = await FacebookAuth.instance.login(
permissions: ['email', 'public_profile'],
loginBehavior: LoginBehavior.nativeWithFallback,
loginTracking: tracking,
);
if (result.status == LoginStatus.success) {
final AccessToken? accessToken = result.accessToken;
print("accessToken: ${accessToken?.tokenString}");
}
