title: How to adjust the volume balance to the left and right separately in android?
body: <p>I am having a problem, I have to handle the sound balance on the left and right earphones, describe in detail as follows:</p>
  <p>-I have a slider the default position is in the middle, the default volume will be equal to the device's volume.</p>
  <p>-When I drag the slider to the left, the right earphone will gradually become smaller until there is no more hearing and the left ear volume remains the same.</p>
  <p>-Similar to the pull to the right, the left small until you can not hear anymore.
  I don't know how to handle it so I hope everyone helps me.
  <a href="https://i.stack.imgur.com/blgB7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/blgB7.png" alt="enter image description here" /></a></p>