title: Android: find fastest route between 2 or more points depeding on streets in GoogleMaps
body: <p>Am adding markers in my app on <code>GoogleMaps</code>,my markers allways are on streets.For example I have moore than 2 markers on map, I need to draw optimal route between them depending on streets.Is there any service to help me, or I need to create my own algorithm? Until now I worked a little with <code>Google Elevation API</code> and <code>Google Direction API</code>, but now I need <code>Google Roads API</code>, to find optimal roads between points? It must be something simmilar to my needs.</p>