Why can't UIDocumentPickerViewController choose PDFs?

Question

I am using UIDocumentPickerViewController in Import mode and it shows PDFs on iCloud and Dropbox. However they are all greyed out and I cannot select them. What am I doing wrong?

Answer 1

First

import MobileCoreServices

now you're eable to access new values such as

String(kUTTypePDF)

Finally, in your Document View Controller

let importMenu = UIDocumentMenuViewController(documentTypes: [String(kUTTypePDF)], in: .import)

enjoy

Answer 2

You need to provide the types of documents that the user is allowed to select.

let docTypes = [
        "com.adobe.pdf"
    ]

let docViewCtlr = UIDocumentMenuViewController(documentTypes: docTypes, in: .import)