[Bug]: No Module Found "OneSignalExtension" in NotificationService.swift

[asadamatic]

What happened?

I followed this Flutter SDK setup guide. I used the provided swift code and my iOS build kept failing after it. I rebuilt my app using XCode, and it gave me this error in the NotificaitonService swift file.

Steps to reproduce?

1. Use the code provided in the Flutter SDK Setup guide for the `NotificationService` swift file.
2. Try building the Flutter app for iOS normally, and it will fail without providing much information.
3. Build the app using XCode.

What did you expect to happen?

I expected the code from the official guide to work without any issues.

OneSignal Flutter SDK version

Release 5.1.2

Which platform(s) are affected?

• iOS
• Android

Relevant log output

OneSignalNotificationServiceExtension
/Users/user/AndroidStudioProjects/shopify_app/ios/OneSignalNotificationServiceExtension/NotificationService.swift
/Users/user/AndroidStudioProjects/shopify_app/ios/OneSignalNotificationServiceExtension/NotificationService.swift:45:8 No such module 'OneSignalExtension'

flutter_local_notifications
/Users/user/.pub-cache/hosted/pub.dev/flutter_local_notifications-16.3.3/ios/Classes/FlutterLocalNotificationsPlugin.m
/Users/user/.pub-cache/hosted/pub.dev/flutter_local_notifications-16.3.3/ios/Classes/FlutterLocalNotificationsPlugin.m:6:17 Method definition for 'setRegisterPlugins:' not found

flutter_local_notifications-flutter_local_notifications_privacy
/Users/user/AndroidStudioProjects/shopify_app/ios/Pods/Pods.xcodeproj The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 9.0, but the range of supported deployment target versions is 12.0 to 17.4.99.

onesignal_flutter
/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OneSignalPlugin.m
/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OneSignalPlugin.m:58:16 Null passed to a callee that requires a non-null argument

/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterInAppMessages.m
/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterInAppMessages.m:104:47 Incompatible pointer types sending 'OSFlutterInAppMessages *' to parameter of type 'NSObject<OSInAppMessageClickListener> * _Nullable'

/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterPushSubscription.m
/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterPushSubscription.m:33:17 Method definition for 'sharedInstance' not found

/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterUser.m
/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterUser.m:91:35 Incompatible pointer types sending 'NSDictionary *' to parameter of type 'NSArray<NSString *> * _Nonnull'

/Users/user/.pub-cache/hosted/pub.dev/onesignal_flutter-5.1.2/ios/Classes/OSFlutterUser.m:103:32 Incompatible pointer types sending 'NSDictionary *' to parameter of type 'NSArray<NSString *> * _Nonnull'

OneSignalXCFramework
/Users/user/AndroidStudioProjects/shopify_app/ios/Pods/Pods.xcodeproj The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 11.0, but the range of supported deployment target versions is 12.0 to 17.4.99.

Code of Conduct

• I agree to follow this project's Code of Conduct

[markosole]

I am having same issue, with error on Podfile import:

import UserNotifications

import OneSignalExtension    // < Shows error No such modlue 'OneSignalExtension'
// rest of the swift code...

I am using Xcode version 14.1 and flutter version 3.19.6 with Dart 3.3.4. I have repeated steps 3 times following guide. Only thing that isn't available in this Xcode is "Minimum Deployments" for iOS version. There is only "Deployment Target".

@asadamatic have you managed to get it working?

[elishae621]

I am having the exact same problem. @markosole have you found a solution?

[markosole]

Hi @elishae621 yes I have manged to sort it out and it works now. There are few things that I did:

• Set your pubspec.xml to lates version of flutter onesignal package onesignal_flutter: ^5.1.6
• Update MacOS and XCode to latest versions available (XCode 15.3) and latest MacOS is requirement
• Delete ios folder (or rename if you need something from it)

flutter clean
flutter pub get

• Prepare your Runner project by following procedure from OneSignal docs
  NOTE: Pay attention on step when you have to navigate in /ios drectory and execute pod install

One last thing is to adjust settings in your project (you will run into issues if you don't.
Check this post for details: #790

In Xcode, in your app target build phases, you should have something called "Embed App Extensions" or "Embed Foundation Extensions" at the end of the build phases. If you drag it BEFORE "Run Script", it should prevent this build error to happen.

It will probably be somewhere at the bottom, so drag and drop it above. Now your can built your app ;)

[jaca420]

Getting the same error when building. I followed the instructions from here:

https://documentation.onesignal.com/docs/flutter-sdk-setup

But still getting the No Module Found "OneSignalExtension"

Not sure how to fix this.

[affan3699]

same here

[alzaichsank]

XCODE : Version 16.0 (16A242d)
Pods: 1.16.2
Flutter : 3.24.4
environment:
sdk: '>=3.5.1 <4.0.0'
version one signal: onesignal_flutter: ^5.2.9

its run smoothly at direct run to simulator or iphone device, but when build for distribution or deploying the error happens,

Im already do the suggestion before:

cc @markosole

[alzaichsank]

XCODE : Version 16.0 (16A242d)
Pods: 1.16.2
Flutter : 3.24.4
environment:
sdk: '>=3.5.1 <4.0.0'
version one signal: onesignal_flutter: ^5.2.9

After trial and error, if you can trying build and run at Android studio
flutter build ios
then success, but at xcode got error, the error at xcode will be the targeting schema when build,
ex :

• targeting schema simulator iphone 16
  change that to
• any device ios (arm64)

then that make me solve the
No Module Found "OneSignalExtension" in NotificationService.swift

[mohammadhassan1497]

Just update your Pod file to

target 'OneSignalNotificationServiceExtension' do
use_frameworks!
pod 'OneSignalXCFramework', '>= 5.0.2'
end

then run pod install