Question

mapView.setStreetView(true); doesn’t make any impact on the map view of my app, instead when i
write mapView.setStreetView(true); a line is marked over it. If any body could tell me what actually is this function for and setTraffic as well.

Answer 1

you need to implement street view like this when you set the mapView.setStreetView(true);

private void showStreetView(){
    String geoUriString = "google.streetview:cbll="+latitude+","+longitude+"&cbp=1,99.56,,1,-5.27&mz=21";  
    Uri geoUri = Uri.parse(geoUriString);  
    Intent mapCall = new Intent(Intent.ACTION_VIEW, geoUri);  
    startActivity(mapCall);
}

and for traffic no need any thing like this but traffic layer work for some countries like new york, canada, etc.