How do I stream large files with URLSession and background transfers?

Streaming large files with URLSession and background transfers in Swift allows developers to efficiently manage downloads without blocking the main thread. By leveraging the capabilities of URLSession, we can ensure a smooth user experience even when dealing with hefty data. This method is particularly useful for applications that need to handle large assets, such as videos or high-resolution images, seamlessly.

// Configuring URLSession for background downloads let config = URLSessionConfiguration.background(withIdentifier: "com.example.app.background") let session = URLSession(configuration: config, delegate: self, delegateQueue: nil) // Starting a file download func downloadFile(from url: URL) { let downloadTask = session.downloadTask(with: url) downloadTask.resume() } // Handling the download completion func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) { // Move downloaded file to permanent location let destinationURL = getDocumentsDirectory().appendingPathComponent("file.ext") try? FileManager.default.moveItem(at: location, to: destinationURL) } // Helper method to get documents directory func getDocumentsDirectory() -> URL { return FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0] }

Swift URLSession Background Transfers Streaming Files Large File Download iOS Development