How to fetch and handle blob data in React Native

The article provides a comprehensive guide on managing cloud data in React Native using the react-native-fs and react-native-blob-util packages. It explains the concept of blobs—Binary Large Objects that store multimedia content—and demonstrates how to create, save, read, upload, and download these blobs in React Native applications. The react-native-fs package is highlighted for its ability to access the device's file system, enabling operations like file creation and manipulation, while react-native-blob-util is showcased for its enhanced capabilities in handling data and file transfers, particularly for large files. The guide includes practical examples of using these packages to perform various tasks, such as downloading images and PDFs from the cloud and uploading images using the fetch or Axios APIs. The article also emphasizes checking device storage availability to ensure efficient data handling, providing a detailed walkthrough for developers to implement and manage blob data effectively in their React Native projects.