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Hive Database in flutter

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Hive is a fast, secure no SQL database implementation for flutter applications. Hive database in flutter uses dart package Hive for storing data locally and manipulating the data on a targeted device.

It stands out to be very fast in performing CRUD operations in comparison to SQLite and shared preference. Hive not only supports primitives, lists, and maps but also any Dart object you like. You need to generate a type adapter before you can store objects.

An offline To-Do App is a good example where you can use the hive database. Let’s check how we can implement hive in flutter.

  1. Create a new project and add these dependencies:

2. Hive can store data using dart primitive types, although, in production, we deal with model objects; to deal with objects, we need to generate TypeAdapter. typeID’ is the identity of the object for the Hive to find it. HiveField must be annotated on the required field names, with their unique id in parameters.

3. Open the terminal and generate the file by entering the following: Flutter packages pub run build_runner build 

4. After your .g file is generated,we have to register the adapter to be able to work with generated TYpe Adapter.

CRUD OPERATIONS:

5. Open HIve box: We need to open a data box so that we can add data to it.

6. Add data in the box.

7. Read the data you have added to the database.

8. You can also update data in the database by using the putAt function and providing data you want to add an index for where you want to add your data.

9. For deleting you need to call the delete function.

That’s how we perform CRUD operations in Hive.

Demo app source code:

 

Output :

Thanks for reading this article ❤

If I got something wrong 🙈, let me know in the comments. I would love to improve.

You can also read: https://mobikul.com/dark-theme-in-the-flutter/

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