Provide volume control
You can set up a user interface control for sound volume.
- Wait for the MediaPlayer instance to be in a valid state for this command, which is any except RELEASED or ERROR.
- Call setVolume on the MediaPlayer instance to set the audio volume.
void setVolume(int volume) throws IllegalStateException;The value for the volume represents the requested volume expressed as a proportion of the maximum volume, where 0 is silent and 100 is the maximum volume.