building an ios file browser
// Create a new document. func documentBrowser(_ controller: UIDocumentBrowserViewController, didRequestDocumentCreationWithHandler importHandler: @escaping (URL?, UIDocumentBrowserViewController.ImportMode) -> Void) { os_log("==> Creating A New Document.", log: .default, type: .debug) let doc = TextDocument() let url = doc.fileURL // Create a new document in a temporary location. doc.save(to: url, for: .forCreating) { (saveSuccess) in // Make sure the document saved successfully. guard saveSuccess else { os_log("*** Unable to create a new document. ***", log: .default, type: .error) // Cancel document creation. importHandler(nil, .none) return } // Close the document. doc.close(completionHandler: { (closeSuccess) in // Make sure the document closed successfully. guard closeSuccess else { os_log("*** Unable to create a new document. ***", log: .default, type: .error) // Cancel document creation. importHandler(nil, .none) return } // Pass the document's temporary URL to the import handler. importHandler(url, .move) }) } }
