media
shell command can also be used:
media volume: the options are as follows:
--stream STREAM selects the stream to control, see AudioManager.STREAM_*
controls AudioManager.STREAM_MUSIC if no stream is specified
--set INDEX sets the volume index value
--adj DIRECTION adjusts the volume, use raise|same|lower for the direction
--get outputs the current volume
--show shows the UI during the volume change
examples:
adb shell media volume --show --stream 3 --set 11
adb shell media volume --stream 0 --adj lower
adb shell media volume --stream 3 --get
The first example is probably the one you were looking for (but it probably didn't exist at the time of asking)
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