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.

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

It is 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 init to make our React Native App. Assuming that you have node installed, you can use npm to install the react-native-cli command line utility. Open the terminal and go to the workspace and run

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

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

react-native init ProjectName --version X.XX.X
react-native init ProjectName --version react-native@next

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

/*This is an Example of Slider Image Gallery in React Native*/
import React from 'react';
//import React in our project
import Gallery from 'react-native-image-gallery';

export default class App extends React.Component {
  constructor() {
    super();
    this.state = {
      imageuri: '',
      ModalVisibleStatus: false,
    };
    this.state = { items: [] };
  }
  componentDidMount() {
    var that = this;
    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),
        },
      };
    });
    that.setState({ items });
  }
  render() {
    //Image Slider
    return (
      <Gallery
        style={{ flex: 1, backgroundColor: 'black' }}
        initialPage="1"
        //initial image to show
        images={this.state.items}
      />
    );
  }
}

To Run the React Native App

Open the terminal again and jump into your project using.
cd ProjectName
To run the project on an Android Virtual Device or on real debugging device
react-native run-android
or on the iOS Simulator by running
react-native run-ios (macOS only).

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 you 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. 🙂


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