How to Use AWS S3 Storage in React Native

React Native is a popular JavaScript library for building mobile apps. It allows you to create a cross-platform app that runs on both iOS and Android. One of the many features offered by React Native is the ability to use Amazon Web Services (AWS) S3 storage for cloud storage. In this tutorial, we’ll go over how to use AWS S3 storage in React Native.

Prerequisites

Before we get started, you’ll need to make sure you have the following:

• A React Native environment set up on your machine.
• An AWS account and the AWS CLI installed on your machine.
• The React Native AWS S3 package installed.

Installing Amazon S3 Package and Dependencies

The first step is to install the React Native AWS S3 package and its dependencies. To do this, open a terminal window and run the following command:

npm install react-native-aws3 --save

This will install the package and its dependencies.

Accessing the Device's Camera in React Native

Now that we have the package installed, we can access the device's camera in React Native. To do this, we'll use the React Native Camera Roll API. To use the Camera Roll API, you'll need to install the following packages:

npm install react-native-camera-roll --save
npm install react-native-permissions --save

Once these packages are installed, we can use the Camera Roll API to access the device's camera.

Uploading Images to AWS S3 in React Native

Now that we have the camera access set up, we can start uploading images to AWS S3. To do this, we'll use the React Native AWS S3 package we installed earlier.

First, we'll need to get the file path of the image we want to upload. To do this, we can use the following code:

import { CameraRoll } from 'react-native-camera-roll';

CameraRoll.getPhotos({
  first: 1,
  assetType: 'Photos',
}).then(r => {
  const filePath = r.edges[0].node.image.uri;
});

Once we have the file path, we can use the React Native AWS S3 package to upload the image to S3. To do this, we can use the following code:

import { RNS3 } from 'react-native-aws3';

const file = {
  uri: filePath,
  name: 'image.jpg',
  type: 'image/jpg'
};

const options = {
  keyPrefix: "images/",
  bucket: "my-bucket",
  region: "my-region",
  accessKey: "my-access-key",
  secretKey: "my-secret-key"
}

RNS3.put(file, options)
  .then(response => {
    if (response.status !== 201)
      throw new Error("Failed to upload image to S3");
    console.log(response.body);
  });

Displaying Images from AWS S3 Storage in React Native

Now that we’ve uploaded the image to S3, we can display it in our React Native app. To do this, we’ll use the React Native Image component. We can use the following code to display the image:

import { Image } from 'react-native';

<Image
  source={{
    uri: response.body.postResponse.location
  }}
  style={{ width: 200, height: 200 }}
/>

Conclusion

In this tutorial, we went over how to use AWS S3 storage in React Native. We installed the necessary packages, accessed the device's camera, uploaded images to S3, and displayed images from S3. With this knowledge, you can now use AWS S3 storage for cloud storage in your React Native apps.