# close(completionHandler:) Asynchronously closes the document after saving any changes. ``` func close(completionHandler: (@Sendable (Bool) -> Void)? = nil) ``` ## Parameters `completionHandler` A block with code to execute after the save-and-close operation concludes. The block returns no value and has one parameter: - `success`: if any save operation succeeds, otherwise . The block is invoked on the main queue. ## Discussion You call this method to begin the sequence of method calls that saves a document safely and asynchronously. The file-system location of the document derives from the [`fileURL`](/documentation/UIKit/UIDocument/fileURL) property. After the save operation concludes, the code in `completionHandler` is executed. In this code, you can close the document — for example, by removing the document’s view from the screen. Additionally, if the save operation didn’t succeed (`success` is ), you can respond in an appropriate manner. You typically wouldn’t override this method. The default implementation calls the [`autosave(completionHandler:)`](/documentation/UIKit/UIDocument/autosave(completionHandler:)) method. --- 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)