应用打开其xlspptdoc等

http://www.libxl.com/documentation.html  xls读写编辑类库libxl

https://blog.csdn.net/songbob/article/details/80523019  比较符合的PPT 操作方式，POI，ASPOSE，VBA

https://blog.csdn.net/weixin_42580207/article/details/80880028   己方应用打开其它app传递过来的文件

Office文件的IOS-UTI支持

文件格式 UTI type
doc com.microsoft.word.doc
docx org.openxmlformats.wordprocessingml.document
ppt com.microsoft.powerpoint.ppt
pptx org.openxmlformats.presentationml.presentation
xls com.microsoft.excel.xls
xlsx org.openxmlformats.spreadsheetml.sheet
pdf com.adobe.pdf
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作者：牛谱乐
来源：CSDN
原文：https://blog.csdn.net/weixin_42580207/article/details/80880028
版权声明：本文为博主原创文章，转载请附上博文链接！

<key>CFBundleDocumentTypes</key>
    <array>
        <dict>
            <key>CFBundleTypeName</key>
            <string>OFFICE Document</string>
            <key>LSHandlerRank</key>
            <string>Owner</string>
            <key>LSItemContentTypes</key>
            <array>
                <string>com.microsoft.word.doc</string>
                <string>com.microsoft.powerpoint.ppt</string>
                <string>com.microsoft.excel.xls</string>
                <string>com.adobe.pdf</string>
                <string>org.openxmlformats.wordprocessingml.document</string>
                <string>org.openxmlformats.presentationml.presentation</string>
                <string>org.openxmlformats.spreadsheetml.sheet</string>
                <string>org.oasis-open.opendocument.text</string>
            </array>
        </dict>
    </array>
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