Example of Slider Image Gallery in React Native

Slider Image Gallery

Here is an Example of Slider Image Gallery in React Native. We will use Gallery component provided by react-native-image-gallery to make a Slider Image Gallery in React Native.

An image Gallery is the most common thing in an application. To make an Image gallery in React Native we have a number of options available and we are using one of them in this example. You can also see our other Example of Grid Image Gallery in React Native.

How to use Gallery Component?

<Gallery
  //style of Gallery
  style={{ flex: 1, backgroundColor: 'black' }}
  //initial image to show
  initialPage="1"
  //Image items to show in Slider
  images={items}
/>

It is a very easy-to-use component. We can easily swipe Left /Right to see images.

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react native command line interface to make our React Native App.

If you have previously installed a global react-native-cli package, please remove it as it may cause unexpected issues:

npm uninstall -g react-native-cli @react-native-community/cli

Run the following commands to create a new React Native project

npx react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

npx react-native init ProjectName --version X.XX.X

Note If the above command is failing, you may have old version of react-native or react-native-cli installed globally on your pc. Try uninstalling the cli and run the cli using npx.

This will make a project structure with an index file named App.js in your project directory.

Installation of Dependency

To use Gallery we have to install react-native-image-gallery package.

To install this open the terminal and jump into your project using.

cd ProjectName

Run the following command.

npm install react-native-image-gallery --save

This command will copy all the dependencies into your node_module directory, You can find the directory in node_module the directory named react-native-image-gallery.

–save is optional, it is just to update the react-native-image-gallery dependency in your package.json file.

Code for Slider Image Gallery

Now Open App.js in any code editor and replace the code with the following code

App.js

// Example of Slider Image Gallery in React Native
// https://aboutreact.com/example-of-slider-image-gallery-in-react-native/

// import React in our code
import React, {useState, useEffect} from 'react';

// import all the components we are going to use
import {
  SafeAreaView,
  StyleSheet,
  View
} from 'react-native';

//import React in our project
import Gallery from 'react-native-image-gallery';

const App = () => {
  const [items, setItems] = useState([]);

  useEffect(() => {
    let items = Array.apply(null, Array(60)).map((v, i) => {
      //Loop to make image array to show in slider
      return {
        source: {
          uri: 'http://placehold.it/200x200?text=' + (i + 1),
        },
      };
    });
    setItems(items);
  }, []);

  return (
    <SafeAreaView style={styles.container}>
      <View style={styles.container}>
        <Gallery
          style={{flex: 1, backgroundColor: 'black'}}
          initialPage="1"
          //initial image to show
          images={items}
        />
      </View>
    </SafeAreaView>
  );
};

export default App;

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    marginTop: 30,
  },
});

To Run the React Native App

Open the terminal again and jump into your project using.

cd ProjectName

1. Start Metro Bundler

First, you will need to start Metro, the JavaScript bundler that ships with React Native. To start Metro bundler run following command

npx react-native start

Once you start Metro Bundler it will run forever on your terminal until you close it. Let Metro Bundler run in its own terminal. Open a new terminal and run the application.

2. Start React Native Application

To run the project on an Android Virtual Device or on real debugging device

npx react-native run-android

or on the iOS Simulator by running (macOS only)

npx react-native run-ios

Output Screenshots

Output in Online Emulator

This is how you can make a Slider Image Gallery in React Native. If you have any doubts or want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!

Hope you liked it. 🙂