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React Native is an innovative technology, powered by Facebook, that lets developers build mobile apps using JavaScript while still delivering a real native user interface. This is achieved by incorporating native components controlled by JavaScript. One significant feature is the use of functional components over class-based components through React Native Hooks, a powerful addition to React.

React Native Hooks can make your codebase smaller, simpler, and easier to understand. This article will guide you on how to install and implement React Native Hooks in your application.

Installation of React Native Hooks

To start using Hooks, you need a particular version of React and React Native. React version should be 16.8 or later, and React Native version should be 0.59 or more latest.

npm install react@^16.8.3 react-native@^0.59.8 --save

The above command will install the required React and React Native versions and save them as dependencies in your project.

Introducing Hooks in React Native Project

React Native Hooks are functions that let you use state and other React features without writing a class. They were added in React 16.8 version. Let’s have a look at how they can be incorporated in your React Native project.

import React, { useState } from 'react';
import { Button, Text, View } from 'react-native';

const App = () => {
  const [count, setCount] = useState(0);

  return (
    <View>
      <Text>You clicked {count} times</Text>
      <Button onPress={() => setCount(count + 1)} title="Click me!" />
    </View>
  );
}
export default App;

useState is a Hook which adds React state to your functional components. In the above example, we’re initializing a new state variable called count.

Exploring Other Popular Hooks

React Native offers a multitude of Hooks such as useState, useEffect, useContext, useReducer, and useCallback. Let’s explore the use of useEffect here, which manages side effects in the functional components.

import React, { useState, useEffect } from 'react';
import { Text, View } from 'react-native';

const App = () => {
  const [count, setCount] = useState(0);

  useEffect(() => {
    document.title = `You clicked ${count} times`;
  });

  return (
    <View>
      <Text>You clicked {count} times</Text>
      <Button onPress={() => setCount(count + 1)} title="Click me!" />
    </View>
  );
}
export default App;

useEffect serves the same purpose as componentDidMount, componentDidUpdate, and componentWillUnmount in React classes, but unified into a single API. It runs after every render.

React Native Hooks can simplify your code and make it easier to manage state and side effects, which can lead to more straightforward code and applications that are simpler to maintain and debug.