that is android default the a and b stuff, even with out this app just using a single joy con is the same wayThank you very much for the code.
I tried it, and with this, I can remotely control the music player as well.
The controls right now are a bit odd ('A' as Back, 'B' as Select), but it is really easy to get used to it.
The best feature what I could imagine would be an option to remap the buttons.