How can I implement offline data sync in a Flutter app?

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How can I implement offline data sync in a Flutter app?

Asked on Dec 09, 2025

Answer

Implementing offline data sync in a Flutter app involves using local storage to cache data and syncing it with a remote server when connectivity is available. This approach ensures a seamless user experience even when the device is offline. You can achieve this using packages like `sqflite` for local storage and `http` or `dio` for network requests.

Example Concept: Offline data sync in Flutter typically uses a local database (e.g., SQLite) to store data when the app is offline. When the device regains connectivity, the app syncs the local data with a remote server using RESTful APIs. This process involves detecting connectivity changes, managing data conflicts, and ensuring data consistency between the local and remote stores.

Additional Comment:

Use the `connectivity_plus` package to monitor network status changes.
Implement data conflict resolution strategies to handle discrepancies between local and remote data.
Consider using background services for periodic sync operations to improve user experience.
Test the sync logic thoroughly to ensure data integrity and performance.

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