How to Decrease Brightness of an Image in React Native?

Dec 06, 2022 . Admin

Today, I would like to show you how to decrease brightness of background image in css. In this article, we will implement a react native screen brightness. step by step explain how to decrease brightness of image in css. This post will give you simple example of react native image brightness. Here, Creating a basic example of react native brightness.

in this example,The idea here is to have a child View component for your image with the same dimensions. We apply a background color of rgba(0,0,0,0.5) to the child View.

Step 1: Download Project

In the first step run the following command to create a project.

expo init ExampleApp

Step 2: App.js

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

import React from 'react';
import {StyleSheet, ImageBackground, View} from 'react-native';

const Register = () => {
  return (
    <View style={styles.container}>
      <ImageBackground
        style={styles.coverImage}
        source={{
          uri: 'https://cdn.pixabay.com/photo/2022/12/03/15/14/christmas-7632906_960_720.jpg',
        }}>
        <View style={styles.darkness} />
      </ImageBackground>
    </View>
  );
};

export default Register;

const styles = StyleSheet.create({
  container: {
    flex: 1,
    marginTop: 35
  },
  coverImage: {
    width: '100%',
    height: 200,
  },
  darkness: {
    backgroundColor: 'rgba(0,0,0,0.5)',
    width: '100%',
    height: 200,
  },
});

Step 3: Run Project

In the last step run your project using the below command.