React native program to upload a file

This is the program to help React developers to read a file from a machine and upload using an API or to a server.

To upload a file in a React Native app, you can use the XMLHttpRequest API, or the fetch API, which is available in React Native out of the box.

Here is an example of how you can use the fetch API to upload a file in a React Native app:

Imports/Packages needed for the program:

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

function MyApp() {
const [file, setFile] = useState(null);
const [fileData, setFileData] = useState(null);

const handleFileSelect = () => {
// Open the file picker
// You can use the native file picker, or a third-party library like
// react-native-document-picker to select a file
};

const handleFileUpload = () => {
// Use the fetch API to upload the file to a server
const data = new FormData();
data.append('file', {
uri: file.uri,
type: file.type,
name: file.name,
});
// check if you have permission to upload the file to the folder
fetch('http://yourserver-url.com/<<the folder to upload>>', {
  method: 'POST',
  body: data,
}).then((response) => {
  if (response.ok) {
    // The file was successfully uploaded
    console.log('File uploaded successfully');
  } else {
    // There was an error uploading the file
    console.error('Error uploading file');
  }
});

};

return (
{file && {file.name}} {fileData && }
);
} export default MyApp;

This example shows a simple form with a file input and a submit button. When the user clicks the “Select file” button, the app opens the native file picker, and the user can select a file. The selected file is stored in the file state variable.

When the user clicks the “Upload file” button, the app uses the fetch API to send the file to the server. The server should have an endpoint that handles the file upload, such as a POST route that accepts a multipart/form-data request.

You can also use the XMLHttpRequest API to upload a file in a React Native app. The XMLHttpRequest API is available in React Native, but it has a lower-level API compared to the fetch API, and it may require more code to use.

I hope this helps!