I was trying to create a custom UTI for my non-document-based application. I have already been reading the Apple documents and several SO questions, but none seems to be addressing my issue.
I created a new UTI in XCode 4 ( "Target" --> "Exported UTIs" ), where I set the identifier in a reverse DNS order, a short description and a custom file extension that is not used by the system or anyone else.
Unfortunately, Finder does not seem to recognize the UTI, meaning that it is not showing the icon and is not showing the description when I associate the file with my application manually.
Do I have to do something else to make this work? I am actually just saving these files in a binary format and attaching the custom file extension at the end of the path. When associated with the application manually, double-clicking a ".vsplf" file results in successfully opening the application and loading the settings from the file.
Any ideas are highly appreciated!
Declaring the UTI is not sufficient. You also need to create a
Document Typeentry in your Info.plist. There is a good explanation with screenshots here:How to register a custom non-document UTI / file type for OSX to recognize it?