Every piece of documentation I’ve found implies that the master volume is relative to the ringtone volume, but I’m not finding that to be the case. My app allows the user to set their volume level via a settings screen (0 -100%) using a slider. On my Samsung Galaxy S6 (Android version 7) the volume increases and decreases as specified, but it’s relative to the Media volume level.
So if the Media volume is set to 50% and my user chooses 100% in the app, the volume is still only 50% of the max device volume. Is there a way to control the OS Media volume level? And the other volume levels, such as Notification?