Q) Flutter iOS File Sharing Error: "Failed to request default share mode" and "Client not entitled"

Answer:

Flutter iOS File Sharing Error: "Failed to request default share mode" and "Client not entitled"

When you encounter the error "Failed to request default share mode" and "Client not entitled" while trying to share files on iOS using Flutter, it can be frustrating. However, with the right approach, you can resolve this issue effectively.

Error Causes
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This error typically occurs when the iOS app does not have the necessary entitlements or the file sharing scheme is not properly configured. Additionally, issues with the `NSFileProvider` or `NSUbiquitousContainerIdentifier` can also cause this error.

Solution 1: Check Entitlements and Provisioning Profile
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1. Check Entitlements: Ensure that the required entitlements are added to your app's entitlements file (`Entitlements.plist`). In this case, you'll need to add the `com.apple.developer.icloud-container-identifiers` entitlement.

2. Check Provisioning Profile: Verify that your app is using the correct provisioning profile. You can do this by checking the `Embedded Binaries` section in your app's target settings.

Here is an example of the entitlements file:

```prefs



com.apple.developer.icloud-container-identifiers

ILOUD_CONTAINER_ID



```