The se_sv_dvorak layout by tlundqvist (tlundqvist.org/sv_dvorak/), ported to android by me.
This is for physical keyboards.
This has only been tested with an apple bluetooth keyboard for my xperia z ultra. Please report any successes or errors to me.
After installing the package, connect your keyboard and go to settings > language & input > your keyboard: choose tlundqvist Dvorak (SE)