How to enlarge the camera to cover the path in android googlemap?

Question

I reviewed several locations on a Google map using LatLng.Builder and it works. Is there a way to cover all the way between two locations in a Google map ?

My "Curent" code to include multiple locations

 builder = new LatLngBounds.Builder(); builder.include(LatLng1); builder.include(LatLng2); googleMap.animateCamera(CameraUpdateFactory.newLatLngBounds(builder.build(), 17)); 

Any suggestion please?
Thanks

Answer 1

The solution was simple.

This may help someone in the future if you are looking for such a feature.

This method is called after the google direction API returns the route from location A to B directionPoints is a list points in a route.

 public void handleResult(ArrayList<LatLng> directionPoints) { PolylineOptions rectLine = new PolylineOptions().width(3).color(Color.RED); for(int i = 0 ; i < directionPoints.size() ; i++) { rectLine.add(directionPoints.get(i)); } //this polyline is stored so that it can be removed by calling drawnRoutePath.remove() if needed drawnRoutePath = googleMap.addPolyline(rectLine); prepareBuilder(directionPoints); googleMap.animateCamera(CameraUpdateFactory.newLatLngBounds(builder.build(), 17)); } 

UPDATE

Json answer from Google Direction API

 "routes" : [ { "bounds" : { "northeast" : { "lat" : 27.7136953, "lng" : 85.32216629999999 }, "southwest" : { "lat" : 27.7103725, "lng" : 85.3214952 } }, .... etc 

Therefore, I used this lat and lng binding as a parameter of LatLngBounds.Builder .

 JSONObject jsonBound = ((JSONObject)jRoutes.get(i)).getJSONObject("bounds"); JSONObject jsonSouthWest = jsonBound.getJSONObject("southwest"); JSONObject jsonNorthEast = jsonBound.getJSONObject("northeast"); LatLng boundSouthWest = new LatLng(jsonSouthWest.getDouble("lat"),jsonSouthWest.getDouble("lng")); LatLng boundNorthEast = new LatLng(jsonNorthEast.getDouble("lat"),jsonNorthEast.getDouble("lng")); ArrayList<LatLng> bounds = new ArrayList<LatLng>(); bounds.add(boundNorthEast); bounds.add(boundSouthWest); 

and included these points in LatLngBounds.Builder

Answer 2

I know you already found the answer, but here is my method for solving the problem

 boolean hasPoints = false; Double maxLat = null, minLat = null, minLon = null, maxLon = null; if (polyline != null && polyline.getPoints() != null) { List<LatLng> pts = polyline.getPoints(); for (LatLng coordinate : pts) { // Find out the maximum and minimum latitudes & longitudes // Latitude maxLat = maxLat != null ? Math.max(coordinate.latitude, maxLat) : coordinate.latitude; minLat = minLat != null ? Math.min(coordinate.latitude, minLat) : coordinate.latitude; // Longitude maxLon = maxLon != null ? Math.max(coordinate.longitude, maxLon) : coordinate.longitude; minLon = minLon != null ? Math.min(coordinate.longitude, minLon) : coordinate.longitude; hasPoints = true; } } if (hasPoints) { LatLngBounds.Builder builder = new LatLngBounds.Builder(); builder.include(new LatLng(maxLat, maxLon)); builder.include(new LatLng(minLat, minLon)); map.moveCamera(CameraUpdateFactory.newLatLngBounds(builder.build(), 48)); }