CFBundleDocumentType keys not working?

Question

I'm trying to set the document type (the Kind field in the Finder get info field), but it still lists the placeholder DocumentType even with this:

    <key>CFBundleDocumentTypes</key>
<array>
    <dict>
        <key>CFBundleTypeExtensions</key>
        <array>
            <string>dotpaint</string>
        </array>
        <key>CFBundleTypeIconFile</key>
        <string>docIcon.png</string>
        <key>CFBundleTypeName</key>
        <string>dotpaint Document</string>
        <key>CFBundleTypeOSTypes</key>

Am I doing anything wrong?

Answer 1

Have you tried exporting your custom UTI type in the .plist file? Take a look at UTExportedTypeDeclarations in Apple's docs. Should be something like this:

<key>UTExportedTypeDeclarations</key>
<array>
    <dict>
        <key>UTTypeDescription</key>
        <string>My file type</string>
        <key>UTTypeConformsTo</key>
        <array>
            <string>public.data</string> // ... or whatever you want it to conform to
        </array>
        <key>UTTypeIdentifier</key>
        <string>com.mycompany.myapp</string>
        <key>UTTypeTagSpecification</key>
        <dict>
            <key>public.filename-extension</key>
            <array>
                <string>dotpaint</string>
            </array>
        </dict>
    </dict>
</array>