No valid “aps-environment” entitlement string found for application

aps-environment issue is common issue but hard to find solution because it’s undocumented in Flutter using Firebase Auth.

APS-Environment Issue

If you struggling with Firebase authentication using Flutter on iOS then this issue is rare to resolve because it doesn’t have any proper documentations

Cause of Problem

It occurs because of misconfiguration of Firebase and Apple. There are multiple possibilities and solutions. First make sure that your APNs token is properly setup. Because Firebase works on APIs based structure it needs notification permissions.

How to Set APNs Token with Firebase Cloud Messaging (FCM) for iOS

Firebase Cloud Messaging (FCM) allows you to send push notifications to your iOS app users through Apple’s Push Notification service (APNs). To enable push notifications for your iOS app using Firebase, you need to configure the APNs authentication key or upload the APNs certificate to Firebase Console. Here’s a step-by-step guide to set up the APNs token with Firebase:

1. Create an iOS App in Firebase Console:

• Go to the Firebase Console and create a new Firebase project or select an existing one.
• Click on “Add App” and select iOS platform.
• Follow the instructions to register your iOS app with Firebase. Download the GoogleService-Info.plist file and add it to your Xcode project.

2. Generate APNs Authentication Key:

• Go to the Apple Developer Portal and navigate to “Keys”.
• Click on the “+” button to create a new key.
• Enter a name for the key and enable the “Apple Push Notifications service (APNs)” option.
• Download the generated key file and keep it secure.

3. Upload APNs Authentication Key to Firebase:

• Go back to the Firebase Console.
• Navigate to your iOS app’s settings page.
• Scroll down to the “Your apps” section and click on the iOS app you created.
• In the “Cloud Messaging” tab, find the section for uploading the APNs authentication key.
• Click on “Upload APNs Authentication Key” and select the key file you downloaded from the Apple Developer Portal.

4. Enable Push Notifications Capability in Xcode:

• Open your iOS app project in Xcode.
• Go to the “Signing & Capabilities” tab.
• Make sure the “Push Notifications” capability is enabled. If not, enable it by clicking the “+” button and adding “Push Notifications”.

5. Handle APNs Token in AppDelegate:

• In your iOS app’s AppDelegate.swift file, implement the application(_:didRegisterForRemoteNotificationsWithDeviceToken:) method.
• This method is called when the app successfully registers with APNs and receives a device token.
• Retrieve the device token and pass it to Firebase Messaging using Messaging.messaging().apnsToken.

6. Test Push Notifications:

• Build and run your iOS app on a physical device.
• Ensure that push notifications are properly handled by your app.
• Use Firebase Console or FCM API to send test notifications to your app.

Following these steps will enable push notifications for your iOS app using Firebase Cloud Messaging and set up the APNs token authentication. Your app will now be able to receive push notifications from your Firebase project

If you have confirmed the APNs token configuration then last step is to add Push Notification Capabilities here are the steps

How to Set Up Push Notification Capabilities in Xcode for iOS Apps

Push notifications are a powerful way to engage with users and keep them informed about important updates in your iOS app. Here’s a step-by-step guide on how to set up push notification capabilities in Xcode for your iOS app:

1. Open Your Xcode Project:

• Launch Xcode and open your iOS app project.

2. Select Your Project in Xcode:

• In the project navigator, select your project to access project settings.

3. Navigate to the Signing & Capabilities Tab:

• Click on your project name at the top of the project navigator to access project settings.
• Select your app’s target under “Targets”.
• Go to the “Signing & Capabilities” tab.

4. Enable Push Notifications Capability:

• In the “Signing & Capabilities” tab, click the “+ Capability” button.
• Choose “Push Notifications” from the list of capabilities.
• Xcode will automatically add the necessary entitlements and configurations to your project.

5. Handle Provisioning Profile:

• Xcode may prompt you to select a development team for provisioning. Choose the appropriate team or let Xcode manage signing for you.

6. Check Background Modes (Optional):

• If your app needs to receive notifications in the background, enable the “Background Modes” capability.
• Check the “Remote notifications” checkbox under “Background Modes”.

7. Add Notification Service Extension (Optional):

• If you need to customize the appearance or behavior of notifications, you can add a Notification Service Extension.
• Click the “+ Capability” button again and choose “Notification Service Extension”.
• Xcode will create a new target for the extension and add it to your project.

8. Configure Notification Service Extension (Optional):

• Customize the notification handling logic in the newly created Notification Service Extension target.
• Implement the didReceive(_:withContentHandler:) method in the extension’s code to modify incoming notifications.

By following these steps, you’ll be able to set up push notification capabilities in Xcode for your iOS app. Push notifications can greatly enhance user engagement and provide valuable updates to your app’s users.