I have an application that is a general file manager. I would like to see Open in ... functionality present in applications using QLPreviewController, UIDocumentInteractionController etc. to be able to send applications to any type of file.
I created a document type, but does "Types" have the value "*", "public. *" Or similar combinations. I can’t get the application to appear for non-specific cases (it works if, for example, I change UTI to com.adobe.pdf).
In Mac OS X, you can configure the application as a general view of all file types - is this not possible in iOS?
EDIT
Looking through the documents, I found that there are only a few primitive types of UTI, from which everyone else inherits
public.item
public.content
public.database
public.calendar-event
public.message
public.contact
public.archive
public.url-name
public.executable
com.apple.resolvable
Of these, many will obviously never be file instances.
Maybe I was too ambitiously trying to create a template test: I tried public.item and it worked on a PDF file from mail. Since the docs state that public.item is the "base type for the physical hierarchy", this may mean that it is a wildcard, that is, "public.item = *"
In the worst case scenario, I could add an element, content, database and archive and hope for the best. The best scenario, the subject covers everything.
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