UIActivityViewController - Share file url from myApp to myApp

What would i do?

I would like to be able to share a file url within my own app, like for example Mail does, i.e.:

• open myApp
• share content from myApp
• choose myApp from the list

e.g. Mail

• open a mail
• take the attached file
• share the attached file to Mail

What am I doing?

Starting from a self-generated app from Xcode

I guess the key word was CFBundleDocumentTypes. So I added

<key>CFBundleDocumentTypes</key>
	<array>
		<dict>
			<key>CFBundleTypeIconFiles</key>
			<array/>
			<key>CFBundleTypeName</key>
			<string>All Files</string>
			<key>CFBundleTypeRole</key>
			<string>Editor</string>
			<key>LSHandlerRank</key>
			<string>Alternate</string>
			<key>LSItemContentTypes</key>
			<array>
				<string>public.data</string>
			</array>
		</dict>
	</array>

to the Info.plist. By doing this myApp is able to receive files from outside (e.g. from Files app).

Then I added in the ViewController

@IBAction func share(_ sender: Any)
    {
        let url = Bundle.main.url(forResource: "blank", withExtension: "pdf")!
        let activityViewController = UIActivityViewController(activityItems: [url], applicationActivities: nil)
        
        if let popover = activityViewController.popoverPresentationController
        {
            popover.sourceView = view
            popover.sourceRect = CGRect(x: view.bounds.midX, y: view.bounds.maxY, width: 0, height: 0)
        }
        
        activityViewController.isModalInPresentation = true
        
        present(activityViewController, animated: true)
    }

linked to a Button.

The Problem

By clicking on the share button myApp does not appear in the list.

What's funny? it works on the simulator - Xcode 14.3 RC 2.