title: Show Area or city boundry in google map using android map api
body: <p>I want to show Area or city (search dynamically) boundaries in android app like map.google.com .
  I have search lots of things on google.I got this link.<a href="https://stackoverflow.com/questions/31861822/google-maps-how-to-show-city-or-an-area-outline">Show city or area outline</a></p>
  
  <p>as per searching on google,I got KML file that is added on kmllayer and kml layer binds on map.</p>
  
  <pre><code>layer = new KmlLayer(googleMap,R.raw.campus, getApplicationContext());
  layer.addLayerToMap();
  </code></pre>
  
  <p>But i don't know that how to bind that kml in google map.
  As per googling, we have to draw polyline on google map using kml.
  but can't finding working solution .</p>
  
  <p>I have another <a href="https://stackoverflow.com/questions/9706484/add-search-area-outline-onto-google-maps-result">Reference link</a>.But not understand what i have to do in my code.anyone can help me for more detailing about that?</p>