Category: IT

Apache POI [ https://poi.apache.org/ ]
[https://mvnrepository.com/artifact/org.apache.poi/poi/4.1.1]

can be used in the android app. Multidex is needed.
But originally the library works well only with xls files.
To work with xlsx the Apache POI-ooxml is needed.
[https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml/4.1.1]

Also there is [https://github.com/andruhon/android5xlsx]

There is a issue with java.awt

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also [https://github.com/dhatim/fastexcel]

Creating Excel files with C and libxlsxwriter
[https://libxlsxwriter.github.io/index.html]