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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

To provide a central store feel of Redux without multiple files

To replace ReactJS with a more efficient solution

What was the main motivation behind creating MobX?

What was the main motivation behind creating MobX?

It is more structured and suited for developers who need more control.


It is tightly integrated with Ignite, the React Native boilerplate.

It provides natural updates with granular rerenders without writing selectors.

It has a smaller community but is more active.

What is the main advantage of MobX over MST?

What is the main advantage of MobX over MST?

It's an alternative to MobX for rendering.

It helps MobX cooperate smoothly with React, the chosen UI library.

It's used to create animated UI elements.

It's a lightweight alternative to React Native.

What is the purpose of the `mobx-react-lite` dependency?

What is the purpose of the <code>mobx-react-lite</code> dependency?

**(True or False)** MobX models in real-world implementation are simple JavaScript objects with enhanced capabilities. 

(True or False) MobX models in real-world implementation are simple JavaScript objects with enhanced capabilities.

By using Redux as a bridge between the two

By implementing a complex system of state management

By using React's context to share MobX state between components

By using a separate library for MobX integration

How is MobX's integration with React Native typically achieved?

How is MobX’s integration with React Native typically achieved?


 In the code snippet, what does the `useMst` hook allow us to do?

```Javascript
export function useMst() {
    const store = useContext(RootStoreContext);
  if (store === null) {
      throw new Error("Store cannot be null, please add a context provider");
}
 ```

In the code snippet, what does the <code>useMst</code> hook allow us to do?
<pre><code class="language-Javascript">export function useMst() {
 const store = useContext(RootStoreContext);
 if (store === null) {
 throw new Error(&quot;Store cannot be null, please add a context provider&quot;);
}
</code></pre>

Wraps the app and passes the MobX store to components

What does the `<Provider>` component do in MobX?

What does the <code>&lt;Provider&gt;</code> component do in MobX?

In the code snippet, what does the `<FlatList>` component do?

```JavaScript
import { useMst } from '../../store';
export const ListOfFavorites = ({ navigation }) => {
 const { likedImages } = useMst();
 //...
 return (
//... >
 <FlatList
 data={likedImages.imageList}
 //...

In the code snippet, what does the <code>&lt;FlatList&gt;</code> component do?
<pre><code class="language-JavaScript">import { useMst } from '../../store';
export const ListOfFavorites = ({ navigation }) =&gt; {
 const { likedImages } = useMst();
 //...
 return (
//... &gt;
 &lt;FlatList
 data={likedImages.imageList}
 //...</code></pre>

By making async/await calls within actions

By using `applySnapshot` in all async functions

By using Redux to handle async operations

How does MobX optimize asynchronous logic using generator functions?

How does MobX optimize asynchronous logic using generator functions?

Pauses the function and returns a promise

What does the `yield` keyword do in MobX generator functions?

What does the <code>yield</code> keyword do in MobX generator functions?

 In the optimized code version, what utility is used to update the state efficiently?

In the optimized code version, what utility is used to update the state efficiently?

**(True or False)** In MobX, the main advantage of using views to derive data from the state is to optimize state updates.

(True or False) In MobX, the main advantage of using views to derive data from the state is to optimize state updates.

Which MobX utility is used to filter the liked images array for a specific image?

Which MobX utility is used to filter the liked images array for a specific image?

Test your knowledge of the MobX library 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: Using MobX as a State Manager in a React Native App