title: How to control music playing in service from notification and lockscreen
body: <p>Please show me the code that controls the media player (Streaming mp3 from server) from notification and lock screen. I know that's really simple, but i don't know from where to start. I actually doesn't know more about <code>mediaController</code> ,<code>mediaSessionCompat</code> and <code>NotifacationCompat.MediaStyle</code>.</p>
  
  <p>Please refer a code to do say. I just want to play/pause and icon that closes the icon.</p>
  
  <p>Thank your very very much in advance. </p>