# fileExporter(isPresented:item:contentTypes:defaultFilename:onCompletion:onCancellation:) Presents a system dialog allowing the user to export a `Transferable` item to a file on disk. ``` nonisolated func fileExporter(isPresented: Binding, item: T?, contentTypes: [UTType] = [], defaultFilename: String? = nil, onCompletion: @escaping (Result) -> Void, onCancellation: @escaping () -> Void = { }) -> some View where T : Transferable ``` ## Parameters `isPresented` A binding to whether the dialog should be shown. `item` The item to be saved on disk. `contentTypes` The optional content types to use for the exported file. If empty, SwiftUI uses the content types from the `transferRepresentation` property provided for `Transferable` conformance. `defaultFilename` If provided, the default name to use for the exported file, which the user will have an opportunity to edit prior to the export. `onCompletion` A callback that will be invoked when the operation has succeeded or failed. `onCancellation` A callback that will be invoked if the user cancels the operation. ## Discussion In order for the dialog to appear, `isPresented` must be set to `true`. When the operation is finished, `isPresented` will be set to `false` before `onCompletion` is called. If the user cancels the operation, `isPresented` will be set to `false` and `onCancellation` will be called. For example, a button that exports a photo might look like this: ``` struct ExportPhotoButton: View { @State private var isExporterPresented = false var photo: Photo var body: some View { Button("Export Photo") { isExporterPresented = true } .fileExporter( isPresented: $isExporterPresented, item: photo, defaultFilename: "exported photo" ) { result in switch result { case .success(let url): print("Saved to \(url)") case .failure(let error): print(error) } } onCancellation: { print("Export cancelled") } } } struct Photo: Transferable { ... } ``` To further configure the dialog’s appearance and behavior, use these view modifiers: [`fileDialogDefaultDirectory(_:)`](/documentation/SwiftUI/View/fileDialogDefaultDirectory(_:)), [`fileDialogConfirmationLabel(_:)`](/documentation/SwiftUI/View/fileDialogConfirmationLabel(_:)), [`fileDialogMessage(_:)`](/documentation/SwiftUI/View/fileDialogMessage(_:)), [`fileDialogBrowserOptions(_:)`](/documentation/SwiftUI/View/fileDialogBrowserOptions(_:)), [`fileExporterFilenameLabel(_:)`](/documentation/SwiftUI/View/fileExporterFilenameLabel(_:)), and [`fileDialogCustomizationID(_:)`](/documentation/SwiftUI/View/fileDialogCustomizationID(_:)). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)