Replacing Context API with Redux Toolkit

Replacing the Context API with Redux Toolkit provides a more structured and scalable way to manage global state in React Native applications. It simplifies state logic while improving performance and maintainability.

• Centralizes application state in a single predictable store.
• Reduces unnecessary re-renders compared to multiple contexts.
• Provides built-in tools for handling actions and reducers efficiently.
• Improves debugging with powerful Redux DevTools.

Implementing Redux Toolkit in React Native

It provides a modern and efficient way to manage global application state with simplified configuration and better scalability.

Step 1: Setting Up Redux Toolkit

First, you need to install Redux Toolkit and React-Redux:

npm install @reduxjs/toolkit react-redux

Step 2: Creating the Redux Store

Create a file named store.tsx (or any name you prefer) to set up the Redux store using the configureStore method from Redux Toolkit:

Step 3: Defining Slice for Shopping Cart

In Redux Toolkit, you define a 'slice' to manage state for a specific feature of your application. Let's create a slice for the shopping cart:

Step 4: Integrating the Slice into the Store

Import the reducer from the shopping cart slice and include it in the store configuration:

Step 5: Providing the Redux Store

Wrap your application with the Provider component from react-redux and pass the Redux store:

Step 6: Accessing State and Dispatching Actions in Components

Modify your components to use Redux Toolkit's useSelector and useDispatch hooks to access the state and dispatch actions, respectively:

• Uses useSelector to read the shopping cart data from the Redux Toolkit store and useDispatch to send actions.
• Allows users to add new items and update item quantities through dispatched Redux actions.
• Displays all cart items and provides buttons to increase, decrease, or remove items from the cart.