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Discover the best options for storing user data locally in Flutter, from Shared Preferences to Hive, with a clear guide on how to manage it with your User Model.
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Where to Store Current User Data Locally in Flutter?

As a Flutter developer, one of the crucial decisions you will face is how to manage user data locally in your app. If you have recently started your journey in Flutter, the question of where to store current user data can be daunting. In this post, we will explore the best ways to save user data locally – primarily focusing on Shared Preferences and Hive.

The Problem: Storing User Data

Imagine you have a user model defined as follows:

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In this example, you fetch user data from a server when the app is launched. Since this user data needs to be accessed frequently throughout your app, it’s essential to store it locally. However, the decision on how to do so often brings up questions like:

Should I use Shared Preferences?

Is Hive too much for storing just a single record?

Are there other alternatives?

The Solution: Storing Data Locally

1. Shared Preferences

Shared Preferences is a lightweight solution for storing simple key-value pairs. If you are only saving one user's information, Shared Preferences is likely the ideal choice for your needs.

Here’s why you might want to choose Shared Preferences:

Simplicity: It’s straightforward to implement.

Ease of Access: You can easily retrieve and store data.

Less Overhead: It doesn’t require setting up a full database.

How to Implement Shared Preferences

To use Shared Preferences for storing your user data, follow these steps:

Add the dependency to your pubspec.yaml file:

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Create helper methods for your User model to serialize and deserialize the data:

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Using the Shared Preferences to save and retrieve the user data:

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2. Hive

If you expect to handle more complex data in the future or handle multiple users, you might consider using Hive. Hive is a lightweight, NoSQL database that’s very performant for Flutter applications. However, keep in mind that it might be overkill if you're only storing a single user record.

Conclusion

For storing current user data locally in Flutter, Shared Preferences should be your go-to solution due to its simplicity and efficiency if you're only managing one user's data. However, as your app grows, using Hive may be beneficial for more complex data requirements.

Choosing the correct storage method will depend on your app's specific use case, but understanding these options ensures you make a well-informed decision. Happy coding!