06-21-2016, 10:19 PM
OK. Done some testing - here are the results.
When playing music and no DAC is connected ('Play through Android' selected) volume rocker changes system media volume (even with UAPP not in foreground) - UAPP main screen volume slider doesn't react at all, but audio level changes. Now, when I connect DAC and play music, volume rocker controls UAPP volume slider on main UAPP screen, and system media volume otherwise. In second case, actual sound volume doesn't change. I understand this behaviour, since UAPP with DAC (in my case) doesn't use Android audio but own driver. My suggestion is to link UAPP volume setting to system media volume setting - easy way to control UAPP audio volume with rocker buttons (like in any other media app), without the need for unreliable hacks.
When playing music and no DAC is connected ('Play through Android' selected) volume rocker changes system media volume (even with UAPP not in foreground) - UAPP main screen volume slider doesn't react at all, but audio level changes. Now, when I connect DAC and play music, volume rocker controls UAPP volume slider on main UAPP screen, and system media volume otherwise. In second case, actual sound volume doesn't change. I understand this behaviour, since UAPP with DAC (in my case) doesn't use Android audio but own driver. My suggestion is to link UAPP volume setting to system media volume setting - easy way to control UAPP audio volume with rocker buttons (like in any other media app), without the need for unreliable hacks.