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State management is a process of managing an application’s data. As a developer, it is important to ensure data remains consistent and synchronized across different application parts.

You’ll start by learning the state management strategies in React Native using state and props and create a real-world Funbook application using only React Native built-in solutions. You’ll learn about the Redux and MobX libraries and how these can be used to implement the like button in the app. Next, you will implement the like button using the XState library that treats the state as a finite state machine. You’ll also learn about the Jotai library that uses atomic state for state management. Finally, you’ll learn how React Query offers comfortable fetching and data mutation on the server that replaces global state management needs.

After completing this course, you will be equipped to implement complex state management functionalities, ensuring data consistency and synchronization across different application parts.

Simplifying State Management in React Native

What is the main function of the state within a React Native component?

What is the main function of the state within a React Native component?

In JSX, what syntax is used to include component state in the text?

In JSX, what syntax is used to include component state in the text?

What happens when you press the `<Pressable>` component without defining an `onPress` function?

What happens when you press the <code>&lt;Pressable&gt;</code> component without defining an <code>onPress</code> function?

By passing the state as an argument to the `<Pressable>` component

By calling the `setCheckedState` function inside the `<Pressable>` component

By using the `onPress` attribute and setting it to a function that modifies the state

How can you change the component state when using the `<Pressable>` component?

How can you change the component state when using the <code>&lt;Pressable&gt;</code> component?

In ReactJS and React Native, what type of components have traditionally been used to manage state before the introduction of hooks?

In ReactJS and React Native, what type of components have traditionally been used to manage state before the introduction of hooks?

They become more complex and harder to understand.

What is one drawback of using stateful components (class components) in React Native?

What is one drawback of using stateful components (class components) in React Native?

Which type of components is easier to write and does not require special life cycle methods or constructors?

Which type of components is easier to write and does not require special life cycle methods or constructors?

What is the primary purpose of the `useState` hook in React?

What is the primary purpose of the <code>useState</code> hook in React?

The `useState` hook in functional components cannot be used.


By directly modifying the state variable.

By importing the `useState` hook and defining state variables.

How can you convert a stateful class component into a functional component with state using the `useState` hook?

How can you convert a stateful class component into a functional component with state using the <code>useState</code> hook?

Test your understanding of the concepts you have learned in this section.


Quiz: Managing State in a Simple React App

Test your understanding of the concepts you have learned in this section.

Before We Begin

What Are React and React Native?

Managing State in a Simple React App

Planning and Setting Up the Funbook App

Styling and Populating the Funbook App

Implementing Redux in Our Funbook App

Using MobX as a State Manager in a React Native App

Untangling Complex Flows in React Native Apps with XState

Integrating Jotai in a React Native App

Using React Query for Server-Side-Driven State Management

Conclusion

Appendix

Quiz: Managing State in a Simple React App