react native share image with code examples 2

React Native Share Image with Code Examples (Part 2)

Introduction:

In this article, we are going to continue exploring the world of React Native Share feature. In the first part, we discussed how we can use React Native Share to share text content. In this part, we are going to discuss how we can use React Native Share to share image content. We will explain everything step by step and provide code examples to make it easier for you to understand.

Prerequisite:

Before we start, make sure that you have set up your environment to work with React Native. Here is the link to set up your development environment: https://reactnative.dev/docs/environment-setup

Sharing Image:

Sharing image using React Native Share is very similar to sharing text, but there is an extra step that we need to do which is converting our image file into a base64 string. In this guide, we are going to use the "react-native-fs" package to read the image file, and the "rn-fetch-blob" package to convert the image file into a base64 string.

Let's get started:

1. Install the "react-native-fs" and "rn-fetch-blob" packages:
   npm install react-native-fs
npm install rn-fetch-blob

2. Import the required packages at the top of your file:
   import RNFS from 'react-native-fs';
import RNFetchBlob from 'rn-fetch-blob';

3. Create a function to handle sharing the image. This function will:

• Read the image file using "react-native-fs"
• Convert the image file to a base64 string using "rn-fetch-blob"
• Use React Native Share to share the base64 string as an image
  Here is the code for the function:

const shareImage = async () => {
  const imagePath = RNFS.DocumentDirectoryPath + '/image.png';

  try {
    // Read the image file
    const imageFile = await RNFS.readFile(imagePath, 'base64');
    // Convert the image file into a base64 string
    const base64Image = `data:image/png;base64,${imageFile}`;

    // Share the base64 string using React Native Share
    await Share.open({
        message: 'Check out this image!',
        subject: 'Check out this image!',
        url: base64Image,
        type: 'image/png',
      });
  } catch (error) {
    console.log(error);
  }
};

4. Create a button in your view to trigger the "shareImage" function:

<TouchableOpacity onPress={() => shareImage()}>
  <Text>Share Image</Text>
</TouchableOpacity>

Conclusion:

In this part, we learned how to use React Native Share to share image content. We discussed how to use "react-native-fs" and "rn-fetch-blob" packages to read the image file and convert it into a base64 string. We provided code examples to make it easier for you to understand the concept. Now, you can apply this knowledge to your projects and make it easy for your users to share images.

We hope you find this guide helpful. If you have any questions or feedback, feel free to reach out to us.

let's discuss the previous topics in more detail.

React Native Share:

In React Native, we can easily share content with other apps using the Share feature provided by the "react-native-share" package. This feature allows users to share text, images, and URLs with other applications installed on the user's device.

To use the React Native Share feature, we first need to install the "react-native-share" package by running the following command in our React Native project directory:

npm install react-native-share

Then, we can import the Share component into our file:

import Share from 'react-native-share';

Once we have imported the Share component, we can use it to share content using the open() method. This method takes an object that contains the content to be shared and a few other options. Here is an example of how we can share text content:

const shareText = async () => {
  try {
    await Share.open({
      message: 'Check out this text!',
      title: 'Share Text',
    });
  } catch (error) {
    console.log(error);
  }
};

In this example, we passed an object with the message and title properties to the open() method. The message property is the text content we want to share, and the title property is the title of the share dialog.

React Native Image:

In React Native, we can display images in a variety of formats, including local images, remote images, and images from a device camera or photo library. To display an image in React Native, we use the Image component provided by the "react-native" package.

Here is an example of how we can display a local image in React Native:

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

const App = () => {
  return (
    <View>
      <Image source={require('./images/sample.png')} />
    </View>
  );
};

export default App;

In this example, we imported the Image component and used it to display a local image by passing the source property. The require() function is used to load the image from the project directory.

React Native Camera:

In React Native, we can use the "react-native-camera" package to easily access and use device cameras. This package provides a Camera component that we can use to take photos and record videos in our React Native project.

To use the react-native-camera package, we first need to install it by running the following command in our React Native project directory:

npm install react-native-camera

Then, we can import the Camera component into our file:

import {RNCamera} from 'react-native-camera';

Once we have imported the Camera component, we can use it to take photos and record videos. Here is an example of how we can use the Camera component to take a photo:

import React, {useState} from 'react';
import {View, TouchableOpacity} from 'react-native';
import {RNCamera} from 'react-native-camera';

const App = () => {
  const [imageUri, setImageUri] = useState(null);

  const takePicture = async () => {
    if (cameraRef) {
      const options = {quality: 0.5, base64: true};
      const data = await cameraRef.takePictureAsync(options);
      setImageUri(data.uri);
    }
  };

  return (
    <View>
      {imageUri && <Image source={{uri: imageUri}} />}
      <RNCamera ref={ref => (cameraRef = ref)} />
      <TouchableOpacity onPress={() => takePicture()}>
        <Text>Take Picture</Text>
      </TouchableOpacity>
    </View>
  );
};

export default App;

In this example, we used the RNCamera component to display the camera view and captured the photo using the takePictureAsync() method. We then displayed the captured image using the Image component.

Conclusion:

React Native provides a variety of features and packages that make it easy to develop mobile applications. In this article, we discussed the React Native Share feature, how to display images, and how to use the React Native Camera package to access device cameras. We also provided code examples to show how we can use these features and packages in our React Native projects. With this knowledge, you can start developing mobile applications with React Native and build amazing apps for your users.

Popular questions

1. What packages are used to share images in React Native?

The "react-native-fs" and "rn-fetch-blob" packages are used to share images in React Native.

2. How can we convert an image file into a base64 string?

We can use the "rn-fetch-blob" package to convert an image file into a base64 string in React Native.

3. What type of content can be shared using React Native Share?

Text, images, and URLs can be shared using React Native Share.

4. What package is used to access device cameras in React Native?

The "react-native-camera" package is used to access device cameras in React Native.

5. How can we display a local image in React Native?

We can use the Image component provided by the "react-native" package to display a local image in React Native. We need to pass the source property with the path of the local image to display it in our React Native app.

Tag

Mobile-app-development