React Native Brightness Change Example

Jun 29, 2021 . Admin

Hi Guys,

In this blog,I will learn you how to use brightness change in react native. We will show example of brightness change in react native. You can easliy create react native brightness change. First i will import Brightness namespace from expo-brightness, after I will make brightness change using in react native.

Step 1 - Create project

In the first step Run the following command for create project.

expo init MyWebtuts

Step 2 - Installation of Dependency

In the step, Run the following command for installation of dependency.

To use Brightness you need to install expo-brightness package.

To install this open the terminal and jump into your project

cd paper MyWebtuts

Run the following command

yarn add expo-brightness

Step 3 - App.js

In this step, You will open App.js file and put the code.

import React, { Component } from "react";
import { Text, View,StyleSheet} from 'react-native';
import * as Brightness from 'expo-brightness';

const MyWebtutsComponent = () => {
    React.useEffect(() => {
        (async () => {
          const { status } = await Brightness.requestPermissionsAsync();
          if (status === 'granted') {
            Brightness.setSystemBrightnessAsync(1);
          }
        })();
      }, []);

    return (
    <View style={styles.mainbox}>
        <Text>React Native Brightness Change Exmaple</Text>
    </View>
  );
};


const styles = StyleSheet.create({
    mainbox:{
        margin:50,
    },

});
export default MyWebtutsComponent;

Step 3 - Run project

In the last step run your project using bellow command.