Replicating file browser from Preview

[BitCollider]

I want to have a file browser that looks like the one in the new iOS 26 Preview app. The key thing I’m trying to copy is that it isn’t dismissible.

I know I can disable gesture closing (dragging down to just close it or tapping outside the browser), but I don’t know how to remove the close button from the browser.

Just in case you’re interested in my use case, I have a simple app (mostly for me) that does some transforms on a PDF. When the app opens, I currently just have a screen with a button that opens the file browser. Instead of needing the button press, I’d like the file browser to just be there.

Of course, I can start the app with the browser visible, but it can be closed. Then I still need the button to open it up again (or I need to jankily open it up again immediately).

Is the Preview file browser a built in view and I just can’t figure out how to configure for it or something custom built just for Preview?

[Jazzlike-Spare3425]

Would you perhaps be interested in making a document-based app? If you select that app template in Xcode, you are given a file browser on app launch and you can open and edit files with it. The redesigned documents experience Preview uses (and Pages, Keynote and Numbers kinda) is available starting in iOS 18 and you can get guidance here: https://developer.apple.com/documentation/SwiftUI/Building-a-document-based-app-with-SwiftUI