UIActivityViewController: Changing default file name

Question

Created Jan ’22

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When I use UIActivityViewController to share a PDF file (or save it to the file system) the default file name is: PDF document when saved to file or something like PDF document-3A147CA34B5F when air dropped.

Is there a way I can change the default file name? Can I set the default folder when using "Save to files"?

I am using:

struct PDFSaveController: UIViewControllerRepresentable {
    // https://stackoverflow.com/a/58341956/16675319
    var activityItems: [Any]
    var applicationActivities: [UIActivity]? = nil

    func makeUIViewController(context: UIViewControllerRepresentableContext<PDFSaveController>) -> UIActivityViewController {
        let controller = UIActivityViewController(activityItems: activityItems, applicationActivities: applicationActivities)
        return controller
    }

    func updateUIViewController(_ uiViewController: UIActivityViewController, context: UIViewControllerRepresentableContext<PDFSaveController>) {}

}

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Answer 1

WorikStanton OP

Jan ’22

Save the file to the bundle

        let DocumentDirURL = try! FileManager.default.url(.. )

        // Now the file itself.  Create the name
        let fileURL = DocumentDirURL.appendingPathComponent(
            name, // <-- New name of file
            isDirectory: false
        )

        // Create the file
        if !FileManager.default.createFile(
            atPath: fileURL.path,
            contents: nil,
            attributes: nil
        )...
        if let fileHandle = FileHandle(forWritingAtPath: fileURL.path){
           // Write file using fileHandle
        }

Then share the fileURL it will have the name

3