Get Introduce to Redux in Flutter

Introduction To Redux In Flutter

Redux is a state management pattern and library for managing application state in Flutter. It is based on the popular JavaScript library Redux and provides a powerful way to manage application state in Flutter.

Redux can help you create complex applications with multiple states that are easy to maintain and test. The main benefit of using Redux is that you can keep your state updated across different parts of your application, making it easier to debug and maintain.

In this article, we'll explore the basics of Redux and how it can be used with Flutter. We'll look at how to create a basic Redux store, how to dispatch actions, and how to connect components to the store.

Creating a Store

The first step in using Redux is to create a store. The store holds all of the application data and acts as a single source of truth. You can think of it as a centralized database for the app.

To create a store, you need to provide an initial state object and a reducer function. The initial state sets the initial values for all of the properties of the store. The reducer is a function that takes in the current state and an action, and returns a new state based on the action.

Once you have the store configured, you can then use the store to dispatch actions and update the state of the application.

Dispatching Actions

To update the state of the app, you need to dispatch an action. Actions are objects which describe what happened. They contain a type property which describes the action that has occurred, and optionally data to go along with the action.

When the store receives an action, it passes the action and the current state to the reducer function. The reducer updates the state based on the action, and then the new state is returned. The store then updates the application's state with the new state.

Connecting Components

Once the store has been configured and the actions have been dispatched, we can now connect our components to the store. We do this by using the store's various methods such as getState() and subscribe().

getState() allows us to access the current state of the store, while subscribe() allows us to listen for updates to the store and notify our components when an update occurs. This way, our components can always be up-to-date with the latest data from the store.

Conclusion

In this article, we've explored the basics of Redux in Flutter. We looked at how to create a store, how to dispatch actions, and how to connect components to the store. By understanding how Redux works, you can create complex applications with multiple states that are easy to maintain and debug.