Customize the Filename of Shared PDF in Swift for iOS

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//
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//  Copyright © 2016-2025 PSPDFKit GmbH. All rights reserved.
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//
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//  The Nutrient sample applications are licensed with a modified BSD license.
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//  Please see License for details. This notice may not be removed from this file.
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//
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import PSPDFKit
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import PSPDFKitUI
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class CustomSharingFileNamesExample: Example {
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    override init() {
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        super.init()
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        title = "Customize the Sharing Experience"
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        contentDescription = "Changes the file name on shared files and adds more sharing options."
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        category = .sharing
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        priority = 900
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    }
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    override func invoke(with delegate: ExampleRunnerDelegate) -> UIViewController {
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        let document = AssetLoader.document(for: .web)
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        let sharingConfiguration = DocumentSharingConfiguration.defaultConfiguration(forDestination: .activity).configurationUpdated {
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            $0.annotationOptions = [.embed, .flatten, .remove]
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            $0.pageSelectionOptions = [.current]
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            $0.excludedActivityTypes = [.assignToContact, .postToWeibo, .postToFacebook, .postToTwitter]
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        }
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        let controller = PDFViewController(document: document, delegate: self) {
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            $0.sharingConfigurations = [sharingConfiguration]
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        }
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        controller.navigationItem.rightBarButtonItems = [controller.activityButtonItem]
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        return controller
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    }
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}
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extension CustomSharingFileNamesExample: PDFViewControllerDelegate {
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    func pdfViewController(_ pdfController: PDFViewController, didShow controller: UIViewController, options: [String: Any]? = nil, animated: Bool) {
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        guard let controller = controller as? PDFDocumentSharingViewController else { return }
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        controller.delegate = self
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    }
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}
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extension CustomSharingFileNamesExample: PDFDocumentSharingViewControllerDelegate {
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    func documentSharingViewController(_ shareController: PDFDocumentSharingViewController, filenameForGeneratedFileFor sharingDocument: Document, destination: DocumentSharingConfiguration.Destination) -> String? {
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        return "NewName"
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    }
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}