基于 plist 创建我自己的文件扩展名答案

【问题标题】：Creating my own file extension based on plist基于 plist 创建我自己的文件扩展名
【发布时间】：2011-06-23 14:26:04
【问题描述】：

我的应用程序处理*.mndl 类型的文件，这不过是自定义的*.plist。到目前为止，我一直在使用*.plist 文件，但现在我想关联扩展名并能够从任何其他应用程序打开*.mndl 文件，我意识到将file.plist 重命名为file.mndl 不起作用。（因此，我什至不知道我是否正确地进行了扩展关联和导出操作）

我从计算机向自己发送了一个文件file.mndl，当在 mail.app 中收到时，我得到了 file.mndl.plist（自动重命名，重置我的iPad时发生）

如何创建自己的 mndl 文件，同时能够使用 NSDictionary 类中的 +dictionaryWithContentsOfFile: 读取其内容？

即使我在使用 iOS，我也相信这类东西是从 MacOS 和 Cocoa 移植过来的。所以 Cocoa 开发人员也可以知道这一点。

感谢您的 cmets/答案。

谢谢

回答：仅用于完成目的这是我在 info.plist 中添加的内容：

    <key>UTExportedTypeDeclarations</key>
    <array>
        <dict>
            <key>UTTypeConformsTo</key>
            <array>
                <string>public.data</string>
            </array>
            <key>UTTypeDescription</key>
            <string>Mandala Chart File</string>
            <key>UTTypeIdentifier</key>
            <string>com.nacho4d.Accordion.mndl</string>
            <key>UTTypeTagSpecification</key>
            <dict>
                <key>public.filename-extension</key>
                <string>mndl</string>
            </dict>
        </dict>
    </array>
    <key>CFBundleDocumentTypes</key>
    <array>
        <dict>
            <key>CFBundleTypeIconFiles</key>
            <array>
                <string>Document320Icon.png</string>
                <string>Document64Icon.png</string>
            </array>
            <key>CFBundleTypeName</key>
            <string>Mandala Chart File</string>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
            <key>LSHandlerRank</key>
            <string>Owner</string>
            <key>LSItemContentTypes</key>
            <array>
                <string>com.nacho4d.Accordion.mndl</string>
            </array>
        </dict>
    </array>

【问题讨论】：

是否需要 UTExportedTypeDeclarations 和 CFBundleDocumentTypes 键来执行此操作？

标签： iphone cocoa cocoa-touch file-extension

【解决方案1】：

至少对于 Cocoa（桌面）应用程序，您需要将以下信息添加到应用程序的 Info.plist。

http://www.markdouma.com/developer/nacho.plist

显然，您应该将统一类型标识符更改为适当的值。（我通常做 com.markdouma.something，因为那是我的网站）。

请注意，如果您打算通过创建一个 NSDocument 子类来处理加载文件来使用 Cocoa 的 NSDocument 架构，那么您只想为 NSDocumentClass 指定一个条目。否则，您总是可以只实现以下（将其读取为应用程序委托协议）方法：

- (void)application:(NSApplication *)sender openFiles:(NSArray *)filenames;

这将为您提供一个 NSArray 的 NSStrings 代表用户在 Finder 中双击（或拖动到应用程序图标等）的文件的 POSIX 路径

如果你想走 NSDocument 路线，你可以重写下面的 NSDocument 方法

- (BOOL)readFromURL:(NSURL *)url ofType:(NSString *)type error:(NSError **)outError;

并使用 [[NSDictionary dictionaryWithContentsOfFile:[url path]] retain];

创建您的字典

希望这会有所帮助...

【讨论】：

谢谢，现在 *.mndl 文件与我的应用程序正确关联，只要它们是 *.mndl。但是我想知道您是否对自动重命名问题有任何想法？（file.mndl 到 file.mndl.plist）这简直要了我的命！
没关系...我再试一次，现在不再发生了。感谢您提供示例 Plist。

【解决方案2】：

最后我发现这个也可以作为参考：我在 Google 的缓存中找到了这个，它显示了如何添加具有不同属性的多个扩展:)

<key>UTImportedTypeDeclarations</key>
 <array>
  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.audio</string>
   <key>UTTypeIdentifier</key>
   <string>public.mp3</string>
   <key>UTTypeDescription</key>
   <string>MP3 audio</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>MPG3</string>
     <string>mpg3</string>
     <string>Mp3 </string>
     <string>MP3 </string>
     <string>mp3!</string>
     <string>MP3!</string>
    </array>
    <key>public.mime-type</key>
    <array>
     <string>audio/mpeg</string>
     <string>audio/mpeg3</string>
     <string>audio/mpg</string>
     <string>audio/mp3</string>
     <string>audio/x-mpeg</string>
     <string>audio/x-mpeg3</string>
     <string>audio/x-mpg</string>
     <string>audio/x-mp3</string>
    </array>
    <key>public.filename-extension</key>
    <string>mp3</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.audio</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>public.mpeg-4-audio</string>
   <key>UTTypeDescription</key>
   <string>MPEG-4 audio</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>M4A </string>
    </array>
    <key>public.mime-type</key>
    <array>
     <string>audio/mp4</string>
    </array>
    <key>public.filename-extension</key>
    <array>
     <string>m4a</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.movie</string>
   <key>UTTypeIdentifier</key>
   <string>public.mpeg-4</string>
   <key>UTTypeDescription</key>
   <string>MPEG-4 movie</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>mpg4</string>
     <string>MP4 </string>
    </array>
    <key>public.mime-type</key>
    <array>
     <string>video/mp4</string>
     <string>video/mp4v-es</string>
    </array>
    <key>public.filename-extension</key>
    <array>
     <string>mp4</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.movie</string>
   <key>UTTypeIdentifier</key>
   <string>public.mpeg</string>
   <key>UTTypeDescription</key>
   <string>MPEG movie</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>MPG </string>
     <string>MPEG</string>
    </array>
    <key>public.mime-type</key>
    <array>
     <string>video/mpeg</string>
     <string>video/mpg</string>
     <string>video/x-mpeg</string>
     <string>video/x-mpg</string>
    </array>
    <key>public.filename-extension</key>
    <array>
     <string>mpg</string>
     <string>mpeg</string>
     <string>mpe</string>
     <string>m75</string>
     <string>m15</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.audiovisual-content</string>
   <key>UTTypeIdentifier</key>
   <string>public.audio</string>
   <key>UTTypeDescription</key>
   <string>audio</string>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.movie</string>
   <key>UTTypeIdentifier</key>
   <string>public.video</string>
   <key>UTTypeDescription</key>
   <string>video</string>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.audiovisual-content</string>
   <key>UTTypeIdentifier</key>
   <string>public.movie</string>
   <key>UTTypeDescription</key>
   <string>movie</string>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>com.microsoft.bmp</string>
   <key>UTTypeDescription</key>
   <string>Windows bitmap image</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>BMP </string>
     <string>BMPf</string>
    </array>
    <key>public.mime-type</key>
    <string>image/bmp</string>
    <key>public.filename-extension</key>
    <string>bmp</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.data</string>
    <string>public.content</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>public.audiovisual-content</string>
   <key>UTTypeDescription</key>
   <string>audiovisual content</string>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>public.png</string>
   <key>UTTypeDescription</key>
   <string>Portable Network Graphics image</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>PNGf</string>
    <key>public.mime-type</key>
    <string>image/png</string>
    <key>public.filename-extension</key>
    <string>png</string>
    <key>com.apple.nspboard-type</key>
    <string>Apple PNG pasteboard type</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>com.compuserve.gif</string>
   <key>UTTypeDescription</key>
   <string>Graphics Interchange Format (GIF)</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>GIFf</string>
    <key>public.mime-type</key>
    <string>image/gif</string>
    <key>public.filename-extension</key>
    <string>gif</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>public.tiff</string>
   <key>UTTypeDescription</key>
   <string>TIFF image</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>TIFF</string>
    <key>public.mime-type</key>
    <string>image/tiff</string>
    <key>public.filename-extension</key>
    <array>
     <string>tiff</string>
     <string>tif</string>
    </array>
    <key>com.apple.nspboard-type</key>
    <array>
     <string>NeXT TIFF v4.0 pasteboard type</string>
     <string>NSTIFFPboardType</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>public.jpeg-2000</string>
   <key>UTTypeDescription</key>
   <string>JPEG 2000 image</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>jp2 </string>
    <key>public.mime-type</key>
    <string>image/jp2</string>
    <key>public.filename-extension</key>
    <array>
     <string>jp2</string>
     <string>jpf</string>
     <string>jpx</string>
     <string>j2k</string>
     <string>j2c</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.image</string>
   <key>UTTypeIdentifier</key>
   <string>public.jpeg</string>
   <key>UTTypeDescription</key>
   <string>JPEG image</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>JPEG</string>
    <key>public.mime-type</key>
    <array>
     <string>image/jpeg</string>
     <string>image/jpg</string>
    </array>
    <key>public.filename-extension</key>
    <array>
     <string>jpeg</string>
     <string>jpg</string>
     <string>jpe</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.data</string>
    <string>public.content</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>public.image</string>
   <key>UTTypeDescription</key>
   <string>image</string>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.data</string>
    <string>public.composite-content</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>com.apple.webarchive</string>
   <key>UTTypeDescription</key>
   <string>web archive</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <array>
     <string>weba</string>
    </array>
    <key>public.mime-type</key>
    <array>
     <string>application/x-webarchive</string>
    </array>
    <key>public.filename-extension</key>
    <array>
     <string>webarchive</string>
    </array>
    <key>com.apple.nspboard-type</key>
    <array>
     <string>Apple Web Archive pasteboard type</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.data</string>
    <string>public.composite-content</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>com.adobe.pdf</string>
   <key>UTTypeDescription</key>
   <string>Portable Document Format (PDF)</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>PDF </string>
    <key>public.mime-type</key>
    <string>application/pdf</string>
    <key>public.filename-extension</key>
    <string>pdf</string>
    <key>com.apple.nspboard-type</key>
    <string>Apple PDF pasteboard type</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.text</string>
   <key>UTTypeIdentifier</key>
   <string>public.html</string>
   <key>UTTypeDescription</key>
   <string>HTML text</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>HTML</string>
    <key>public.mime-type</key>
    <string>text/html</string>
    <key>public.filename-extension</key>
    <array>
     <string>html</string>
     <string>htm</string>
     <string>shtml</string>
     <string>shtm</string>
    </array>
    <key>com.apple.nspboard-type</key>
    <string>Apple HTML pasteboard type</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.plain-text</string>
   <key>UTTypeIdentifier</key>
   <string>public.utf16-plain-text</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>utxt</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.plain-text</string>
   <key>UTTypeIdentifier</key>
   <string>public.utf16-external-plain-text</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>ut16</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.plain-text</string>
   <key>UTTypeIdentifier</key>
   <string>public.utf8-plain-text</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>com.apple.ostype</key>
    <string>utf8</string>
    <key>com.apple.nspboard-type</key>
    <string>NSStringPboardType</string>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <string>public.text</string>
   <key>UTTypeIdentifier</key>
   <string>public.plain-text</string>
   <key>UTTypeTagSpecification</key>
   <dict>
    <key>public.mime-type</key>
    <string>text/plain</string>
    <key>public.filename-extension</key>
    <array>
     <string>txt</string>
     <string>text</string>
    </array>
   </dict>
  </dict>

  <dict>
   <key>UTTypeConformsTo</key>
   <array>
    <string>public.data</string>
    <string>public.content</string>
   </array>
   <key>UTTypeIdentifier</key>
   <string>public.text</string>
   <key>UTTypeDescription</key>
   <string>text</string>
  </dict>

 </array>



 <key>CFBundleDocumentTypes</key>
 <array>
  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>mp3</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>audio/mpeg</string>
    <string>audio/mpeg3</string>
    <string>audio/mpg</string>
    <string>audio/mp3</string>
    <string>audio/x-mpeg</string>
    <string>audio/x-mpeg3</string>
    <string>audio/x-mpg</string>
    <string>audio/x-mp3</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>MPG3</string>
    <string>mpg3</string>
    <string>Mp3 </string>
    <string>MP3 </string>
    <string>mp3!</string>
    <string>MP3!</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>MP3 audio</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.mp3</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>m4a</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>audio/mp4</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>M4A </string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>MPEG-4 audio</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.mpeg-4-audio</string>
   </array>
  </dict>

  <dict>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>audio</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.audio</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>bmp</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/bmp</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>BMP </string>
    <string>BMPf</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>Windows bitmap image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>com.microsoft.bmp</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>png</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/png</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>PNGf</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>Portable Network Graphics image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.png</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>gif</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/gif</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>GIFf</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>Graphics Interchange Format (GIF)</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>com.compuserve.gif</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>tiff</string>
    <string>tif</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/tiff</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>TIFF</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>TIFF image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.tiff</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>jp2</string>
    <string>jpf</string>
    <string>jpx</string>
    <string>j2k</string>
    <string>j2c</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/jp2</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>jp2 </string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>JPEG 2000 image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.jpeg-2000</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>jpeg</string>
    <string>jpg</string>
    <string>jpe</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>image/jpeg</string>
    <string>image/jpg</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>JPEG</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>JPEG image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.jpeg</string>
   </array>
  </dict>

  <dict>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>image</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.image</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>webarchive</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>application/x-webarchive</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>weba</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>web archive</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>com.apple.webarchive</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>pdf</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>application/pdf</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>PDF </string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>Portable Document Format (PDF)</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>com.adobe.pdf</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>html</string>
    <string>htm</string>
    <string>shtml</string>
    <string>shtm</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>text/html</string>
   </array>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>HTML</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>HTML text</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.html</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>utxt</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.utf16-plain-text</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>ut16</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.utf16-external-plain-text</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeOSTypes</key>
   <array>
    <string>utf8</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.utf8-plain-text</string>
   </array>
  </dict>

  <dict>
   <key>CFBundleTypeExtensions</key>
   <array>
    <string>txt</string>
    <string>text</string>
   </array>
   <key>CFBundleTypeMIMETypes</key>
   <array>
    <string>text/plain</string>
   </array>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.plain-text</string>
   </array>
  </dict>

  <dict>
   <key>LSTypeIsPackage</key>
   <false />
   <key>NSExportableAs</key>
   <array>
   </array>
   <key>CFBundleTypeName</key>
   <string>text</string>
   <key>LSItemContentTypes</key>
   <array>
    <string>public.text</string>
   </array>
  </dict>

 </array>

【讨论】：