I'm trying to associate a custom file type and extension with my Mac Catalyst app.
On the Mac, I can get this to work by adding the following key/values to my Info.plist:
Once I've modified the Info.plist, sometimes I have to build my app in Xcode and then drag the product to the Applications directory before launchd will associate the file type correctly.
Once I do this, my app appears in the "Open with..." menu.
However, the steps do not appear to work for a Catalyst target. If you look at the Twitter thread that I linked to before, it suggested that the Applications folder trick worked at one point, but I have had no luck getting it to work in Big Sur (I'm running 11.2.3).
I've created a sample repo (including a couple of sample files) that you can try this out with so a tester can avoid the process of creating the targets. There is nothing here except for a "Hello, world!" app with the Info.plist set up as described above, with a macOS native target and a Catalyst target. (Remember the hint about dragging to Applications): https://github.com/jnpdx/MacNativeUTITest
On the Mac, I can get this to work by adding the following key/values to my Info.plist:
Code Block <key>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeName</key> <string>CustomUTI</string> <key>CFBundleTypeRole</key> <string>Editor</string> <key>LSHandlerRank</key> <string>Owner</string> <key>LSItemContentTypes</key> <array> <string>com.jnpdx.customuti</string> </array> </dict> </array>
Code Block <key>UTExportedTypeDeclarations</key> <array> <dict> <key>UTTypeConformsTo</key> <array> <string>public.data</string> </array> <key>UTTypeDescription</key> <string>CustomUTI</string> <key>UTTypeIcons</key> <dict/> <key>UTTypeIdentifier</key> <string>com.jnpdx.customuti</string> <key>UTTypeTagSpecification</key> <dict> <key>public.filename-extension</key> <array> <string>customuti</string> </array> <key>public.mime-type</key> <array> <string>custom/uti</string> </array> </dict> </dict> </array>
Once I've modified the Info.plist, sometimes I have to build my app in Xcode and then drag the product to the Applications directory before launchd will associate the file type correctly.
Once I do this, my app appears in the "Open with..." menu.
However, the steps do not appear to work for a Catalyst target. If you look at the Twitter thread that I linked to before, it suggested that the Applications folder trick worked at one point, but I have had no luck getting it to work in Big Sur (I'm running 11.2.3).
I've created a sample repo (including a couple of sample files) that you can try this out with so a tester can avoid the process of creating the targets. There is nothing here except for a "Hello, world!" app with the Info.plist set up as described above, with a macOS native target and a Catalyst target. (Remember the hint about dragging to Applications): https://github.com/jnpdx/MacNativeUTITest
