Home/ Questions/Q 3304250
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-17T21:02:31+00:00

I have app that exports data in CSV. Recently I added Open In… feature

  • 0

I have app that exports data in CSV. Recently I added “Open In…” feature for opening .csv files in other apps. I would like to be able to have Numbers (on iPad) open exported files as well.

Trawling through Numbers’s Info.plist, I saw that it supports four document types:

  1. com.apple.iWork.Numbers.sffnumbers
  2. com.apple.iWork.Numbers.numbers
  3. com.microsoft.excel.xls
  4. org.openxmlformats.spreadsheetml.sheet

So, I am wondering if anyone knows where I can find specifications for one or more of these file formats or and example spreadsheet or code that would do the job. I have googled a fair bit – and I assume that formats 1-3 are proprietary. I am not sure about #4 and have found bits and pieces, but it isn’t clear to me how they would fit together to constitute a readable document.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Format 4 is the OOXML spreadsheet format. You may be able to find the references you need at the Wikipedia page.

    • 0