It looks like LibreOffice will have something for Android/Linux soon. They have the basics working now.
“As part of the Google Summer of Code, Iain Billet is working hard at building a Java viewer UI for LibreOffice, that will integrate nicely into the platform, and provide fast pan / zoom / page-flip browsing, and all that good stuff you expect. Tor meanwhile (modulo having just left for vacation), is working on tiled page rendering to textures. That will allow us to quickly render portions of document content at any scale, asynchronously in a background thread, to suit the viewer. This is going reasonably well.”

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“That will allow us to quickly render portions of document content at any scale, asynchronously in a background thread, to suit the viewer.”
I like this idea; I don’t see why it should not be incorporated into libre office mainline…