title: How to set the zoomLevel of mapView for displaying complete route on MapView
body: <p>This time, i want to display the route between two locations on mapview. I've used googlemapApi for achieving direction. Fortunately I am able to display the route with blue color over the map. 
  The only difficulty is to set the correct zoom level So that i could display complete route in the startup of the map loading on the visible screen-portion.</p>
  
  <p>I was wondering for this solution around the stack overflow But i got confused after reading through several number of answer. Finally i decided to post a question.</p>
  
  <p>Can anybody tell me what is the most convenient method to resolve this issue.</p>
  
  <p>Any help would be highly appreciated.</p>