title: android google maps api v2 set route and fix moving
body: <p>I need draw route between multiple point (route) with red color. User moving with this route (i detect user location) and route change color to green.</p>
  
  <p>I use android google api v2. </p>
  
  <p>I crete route A-B-..-Z with map.addPolyline(rectLine) red color. </p>
  
  <p>User moved by this route and i need mark him path with green color if user moved by route. </p>
  
  <p>What i can use from api?</p>