Just a shot in the dark, but maybe this is an issue:
Comparing your declaration to the sample from
<https://developer.apple.com/library/ios/documentation/FileManagement/Conceptual/understanding_utis/understand_utis_declare/understand_utis_declare.html>
reveals that the sample declares com.apple.ostype
directly as an string:
..
<key>UTTypeTagSpecification</key>
<dict>
<key>com.apple.ostype</key>
<string>JPEG</string>
<key>public.filename-extension</key>
..
whereas your sample uses an array with one string.
Cheers,
Felix
On 16.10.2014, at 13:07, Graham Cox <graham....@bigpond.com> wrote:
> It is a dyn.<blahblah> type, which indicates that the UTI for the given file
> extension is unknown. So this is the puzzle - why, having exported a UTI for
> that very extension (.cxtf), is it still returning unknown, even after
> rebuilding the database, safe rebooting, etc. My export declaration must be
> incorrect, but AFAICS it looks fine:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
> "http://www.apple.com/DTDs/PropertyList-1.0.dtd";>
> <plist version="1.0">
> <array>
> <dict>
> <key>UTTypeConformsTo</key>
> <array>
> <string>public.content</string>
> </array>
> <key>UTTypeDescription</key>
> <string>Crucible File</string>
> <key>UTTypeIconFile</key>
> <string>crucibledoc</string>
> <key>UTTypeIdentifier</key>
> <string>net.apptree.crucible.newcrossfile</string>
> <key>UTTypeTagSpecification</key>
> <dict>
> <key>com.apple.ostype</key>
> <array>
> <string>CXTF</string>
> </array>
> <key>public.filename-extension</key>
> <array>
> <string>cxtf</string>
> </array>
> </dict>
> </dict>
> </array>
> </plist>
>
>
>
> If I force the above NSDocumentController method to return the expected UTI,
> it does go ahead and opens the file properly. However, this is not a fix,
> because it only allows the file to be opened by forcing it open with the app
> and double-clicking, not in the Open dialog.
>
> Still stumped, but maybe somone can spot an issue with the UTI export?
>
> --Graham
>
>
>
>
>
>
>
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