that might be a tough one ,,familiar with the android app ,,but my tablet wouldnt connect with the controller coundnt get otg support to function on tablet ..
what have you tried
familiar with the MIDI mapping for win systems ,, no clue as to how its implemented in android ,,
you can remap controllers ,,useing a akai mpd 18 for sample deck controls ,ie volume /fade .play stop ,, no shure how that would apply ,, the basic mapping for the controller would have to be remapped for the contrioller to handel this ,,thats in win/mac systems ,, not shure it can be done in android ,,
i know ,,no real answer here ,,just speculation