Android feature: multiple files upload in one shot via multipart, issue #240

[varunon9]

Summary

Android only support for uploading multiple files in one go Issue: https://github.com/Vydia/react-native-background-upload/issues/240

Test Plan

What's required for testing (prerequisites)?

What are the steps to reproduce (after prerequisites)?

const onChooseImagesPress = () => {
  launchImageLibrary({
    selectionLimit: 20
  }, ({assets}) => {
    const uploadConfig = {
      url: 'https://httpbin.org/post',
      //type: 'multipart',
      method: 'POST',
      notification: {
        enabled: true
      },
      useUtf8Charset: true
    };
    startUpload({
      ...uploadConfig,
      files: assets.map(asset => ({
        path: asset.uri.substr(7),
        field: asset.fileName
      }))
    })
  });
};

Compatibility

OS	Implemented
iOS	❌
Android	✅

Checklist

• [X] I have tested this on an emulator
• [X] I added the documentation in README.md
• [X] I updated the typed files (TS only)
• [ ] I've added Detox End-to-End Test(s)
• [ ] I've created a snack to demonstrate the changes: LINK HERE