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Android + excel xls xlsx

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


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

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

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Android Audio Video

MediaCodec (https://developer.android.com/reference/android/media/MediaCodec.html)

ExoPlayer (https://developer.android.com/guide/topics/media/exoplayer.html) (https://github.com/google/ExoPlayer)

https://github.com/googlesamples/android-audio-high-performance

Android и звук: как делать правильно (https://habrahabr.ru/post/339416/) (pdf)
Continue reading Android Audio Video

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About RX

Что нового в RxJava 3
[https://habr.com/ru/company/simbirsoft/blog/510400/]

http://blog.danlew.net/2014/09/15/grokking-rxjava-part-1/

http://blog.danlew.net/2014/09/22/grokking-rxjava-part-2/

http://blog.danlew.net/2014/09/30/grokking-rxjava-part-3/

https://habrahabr.ru/post/265269/

https://habrahabr.ru/post/265583/

https://habrahabr.ru/post/265727/

[https://habr.com/ru/company/funcorp/blog/459174/]

How RxJava chain actually works
[https://proandroiddev.com/how-rxjava-chain-actually-works-2800692f7e13]

Continue reading About RX