api - Android: How to draw multiple routes from source to destination on map? -
i able draw single route using polyline between 2 geo points on android map v2. don't know how draw multiple routes source destination tried add "alternatives=true" still getting 1 route on map. please me out how research on web, still can't able find easy understandable solution this.
googledirection.java
@suppresslint("newapi") public class googledirection { public googledirection(context context) { mcontext = context; } public string request(latlng start, latlng end, string mode) { final string url = "http://maps.googleapis.com/maps/api/directions/xml?" + "origin=" + start.latitude + "," + start.longitude + "&destination=" + end.latitude + "," + end.longitude + "&sensor=false&units=metric&mode=" + mode + "alternatives=true"; if(islogging) log.i("googledirection", "url : " + url); new requesttask().execute(new string[]{ url }); return url; } private class requesttask extends asynctask<string, void, document> { protected document doinbackground(string... url) { try { httpclient httpclient = new defaulthttpclient(); httpcontext localcontext = new basichttpcontext(); httppost httppost = new httppost(url[0]); httpresponse response = httpclient.execute(httppost, localcontext); inputstream in = response.getentity().getcontent(); documentbuilder builder = documentbuilderfactory.newinstance().newdocumentbuilder(); return builder.parse(in); } catch (ioexception e) { e.printstacktrace(); } catch (parserconfigurationexception e) { e.printstacktrace(); } catch (saxexception e) { e.printstacktrace(); } return null; } protected void onpostexecute(document doc) { super.onpostexecute(doc); if(mdirectionlistener != null) mdirectionlistener.onresponse(getstatus(doc), doc, googledirection.this); } private string getstatus(document doc) { nodelist nl1 = doc.getelementsbytagname("status"); node node1 = nl1.item(0); if(islogging) log.i("googledirection", "status : " + node1.gettextcontent()); return node1.gettextcontent(); } } public void setlogging(boolean state) { islogging = state; } public string getstatus(document doc) { nodelist nl1 = doc.getelementsbytagname("status"); node node1 = nl1.item(0); if(islogging) log.i("googledirection", "status : " + node1.gettextcontent()); return node1.gettextcontent(); } public string[] getdurationtext(document doc) { nodelist nl1 = doc.getelementsbytagname("duration"); string[] arr_str = new string[nl1.getlength() - 1]; for(int = 0 ; < nl1.getlength() - 1 ; i++) { node node1 = nl1.item(i); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "text")); arr_str[i] = node2.gettextcontent(); if(islogging) log.i("googledirection", "durationtext : " + node2.gettextcontent()); } return arr_str; } public int[] getdurationvalue(document doc) { nodelist nl1 = doc.getelementsbytagname("duration"); int[] arr_int = new int[nl1.getlength() - 1]; for(int = 0 ; < nl1.getlength() - 1 ; i++) { node node1 = nl1.item(i); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "value")); arr_int[i] = integer.parseint(node2.gettextcontent()); if(islogging) log.i("googledirection", "duration : " + node2.gettextcontent()); } return arr_int; } public string gettotaldurationtext(document doc) { nodelist nl1 = doc.getelementsbytagname("duration"); node node1 = nl1.item(nl1.getlength() - 1); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "text")); if(islogging) log.i("googledirection", "totalduration : " + node2.gettextcontent()); return node2.gettextcontent(); } public int gettotaldurationvalue(document doc) { nodelist nl1 = doc.getelementsbytagname("duration"); node node1 = nl1.item(nl1.getlength() - 1); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "value")); if(islogging) log.i("googledirection", "totalduration : " + node2.gettextcontent()); return integer.parseint(node2.gettextcontent()); } public string[] getdistancetext(document doc) { nodelist nl1 = doc.getelementsbytagname("distance"); string[] arr_str = new string[nl1.getlength() - 1]; for(int = 0 ; < nl1.getlength() - 1 ; i++) { node node1 = nl1.item(i); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "text")); arr_str[i] = node2.gettextcontent(); if(islogging) log.i("googledirection", "durationtext : " + node2.gettextcontent()); } return arr_str; } public int[] getdistancevalue(document doc) { nodelist nl1 = doc.getelementsbytagname("distance"); int[] arr_int = new int[nl1.getlength() - 1]; for(int = 0 ; < nl1.getlength() - 1 ; i++) { node node1 = nl1.item(i); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "value")); arr_int[i] = integer.parseint(node2.gettextcontent()); if(islogging) log.i("googledirection", "duration : " + node2.gettextcontent()); } return arr_int; } public string gettotaldistancetext(document doc) { nodelist nl1 = doc.getelementsbytagname("distance"); node node1 = nl1.item(nl1.getlength() - 1); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "text")); if(islogging) log.i("googledirection", "totalduration : " + node2.gettextcontent()); return node2.gettextcontent(); } public int gettotaldistancevalue(document doc) { nodelist nl1 = doc.getelementsbytagname("distance"); node node1 = nl1.item(nl1.getlength() - 1); nodelist nl2 = node1.getchildnodes(); node node2 = nl2.item(getnodeindex(nl2, "value")); if(islogging) log.i("googledirection", "totalduration : " + node2.gettextcontent()); return integer.parseint(node2.gettextcontent()); } public string getstartaddress(document doc) { nodelist nl1 = doc.getelementsbytagname("start_address"); node node1 = nl1.item(0); if(islogging) log.i("googledirection", "startaddress : " + node1.gettextcontent()); return node1.gettextcontent(); } public string getendaddress(document doc) { nodelist nl1 = doc.getelementsbytagname("end_address"); node node1 = nl1.item(0); if(islogging) log.i("googledirection", "startaddress : " + node1.gettextcontent()); return node1.gettextcontent(); } public string getcopyrights(document doc) { nodelist nl1 = doc.getelementsbytagname("copyrights"); node node1 = nl1.item(0); if(islogging) log.i("googledirection", "copyrights : " + node1.gettextcontent()); return node1.gettextcontent(); } public arraylist<latlng> getdirection(document doc) { nodelist nl1, nl2, nl3; arraylist<latlng> listgeopoints = new arraylist<latlng>(); nl1 = doc.getelementsbytagname("step"); if (nl1.getlength() > 0) { (int = 0; < nl1.getlength(); i++) { node node1 = nl1.item(i); nl2 = node1.getchildnodes(); node locationnode = nl2.item(getnodeindex(nl2, "start_location")); nl3 = locationnode.getchildnodes(); node latnode = nl3.item(getnodeindex(nl3, "lat")); double lat = double.parsedouble(latnode.gettextcontent()); node lngnode = nl3.item(getnodeindex(nl3, "lng")); double lng = double.parsedouble(lngnode.gettextcontent()); listgeopoints.add(new latlng(lat, lng)); locationnode = nl2.item(getnodeindex(nl2, "polyline")); nl3 = locationnode.getchildnodes(); latnode = nl3.item(getnodeindex(nl3, "points")); arraylist<latlng> arr = decodepoly(latnode.gettextcontent()); for(int j = 0 ; j < arr.size() ; j++) { listgeopoints.add(new latlng(arr.get(j).latitude , arr.get(j).longitude)); } locationnode = nl2.item(getnodeindex(nl2, "end_location")); nl3 = locationnode.getchildnodes(); latnode = nl3.item(getnodeindex(nl3, "lat")); lat = double.parsedouble(latnode.gettextcontent()); lngnode = nl3.item(getnodeindex(nl3, "lng")); lng = double.parsedouble(lngnode.gettextcontent()); listgeopoints.add(new latlng(lat, lng)); } } return listgeopoints; } public arraylist<latlng> getsection(document doc) { nodelist nl1, nl2, nl3; arraylist<latlng> listgeopoints = new arraylist<latlng>(); nl1 = doc.getelementsbytagname("step"); if (nl1.getlength() > 0) { (int = 0; < nl1.getlength(); i++) { node node1 = nl1.item(i); nl2 = node1.getchildnodes(); node locationnode = nl2.item(getnodeindex(nl2, "end_location")); nl3 = locationnode.getchildnodes(); node latnode = nl3.item(getnodeindex(nl3, "lat")); double lat = double.parsedouble(latnode.gettextcontent()); node lngnode = nl3.item(getnodeindex(nl3, "lng")); double lng = double.parsedouble(lngnode.gettextcontent()); listgeopoints.add(new latlng(lat, lng)); } } return listgeopoints; } public polylineoptions getpolyline(document doc, int width, int color) { arraylist<latlng> arr_pos = getdirection(doc); polylineoptions rectline = new polylineoptions().width(dptopx(width)).color(color); for(int = 0 ; < arr_pos.size() ; i++) rectline.add(arr_pos.get(i)); return rectline; } private int getnodeindex(nodelist nl, string nodename) { for(int = 0 ; < nl.getlength() ; i++) { if(nl.item(i).getnodename().equals(nodename)) return i; } return -1; } private arraylist<latlng> decodepoly(string encoded) { arraylist<latlng> poly = new arraylist<latlng>(); int index = 0, len = encoded.length(); int lat = 0, lng = 0; while (index < len) { int b, shift = 0, result = 0; { b = encoded.charat(index++) - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1)); lat += dlat; shift = 0; result = 0; { b = encoded.charat(index++) - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1)); lng += dlng; latlng position = new latlng((double)lat / 1e5, (double)lng / 1e5); poly.add(position); } return poly; } private int dptopx(int dp) { displaymetrics displaymetrics = mcontext.getresources().getdisplaymetrics(); int px = math.round(dp * (displaymetrics.xdpi / displaymetrics.density_default)); return px; } public void setondirectionresponselistener(ondirectionresponselistener listener) { mdirectionlistener = listener; } public void setonanimatelistener(onanimatelistener listener) { manimatelistener = listener; } public interface ondirectionresponselistener { public void onresponse(string status, document doc, googledirection gd); } public interface onanimatelistener { public void onfinish(); public void onstart(); public void onprogress(int progress, int total); } public void animatedirection(googlemap gm, arraylist<latlng> direction, int speed , boolean cameralock, boolean iscameratilt, boolean iscamerazoom , boolean drawmarker, markeroptions mo, boolean flatmarker , boolean drawline, polylineoptions po) { if(direction.size() > 1) { isanimated = true; animatepositionlist = direction; animatespeed = speed; this.drawmarker = drawmarker; this.drawline = drawline; this.flatmarker = flatmarker; this.iscameratilt = iscameratilt; this.iscamerazoom = iscamerazoom; step = 0; this.cameralock = cameralock; this.gm = gm; setcameraupdatespeed(speed); beginposition = animatepositionlist.get(step); endposition = animatepositionlist.get(step + 1); animatemarkerposition = beginposition; if(manimatelistener != null) manimatelistener.onprogress(step, animatepositionlist.size()); if(cameralock) { float bearing = getbearing(beginposition, endposition); cameraposition.builder camerabuilder = new cameraposition.builder() .target(animatemarkerposition).bearing(bearing); if(iscameratilt) camerabuilder.tilt(90); else camerabuilder.tilt(gm.getcameraposition().tilt); if(iscamerazoom) camerabuilder.zoom(zoom); else camerabuilder.zoom(gm.getcameraposition().zoom); cameraposition cameraposition = camerabuilder.build(); gm.animatecamera(cameraupdatefactory.newcameraposition(cameraposition)); } if(drawmarker) { if(mo != null) animatemarker = gm.addmarker(mo.position(beginposition)); else animatemarker = gm.addmarker(new markeroptions().position(beginposition)); if(flatmarker) { animatemarker.setflat(true); float rotation = getbearing(animatemarkerposition, endposition) + 180; animatemarker.setrotation(rotation); } } if(drawline) { if(po != null) animateline = gm.addpolyline(po.add(beginposition) .add(beginposition).add(endposition) .width(dptopx((int)po.getwidth()))); else animateline = gm.addpolyline(new polylineoptions() .width(dptopx(5))); } new handler().postdelayed(r, speed); if(manimatelistener != null) manimatelistener.onstart(); } } public void cancelanimated() { isanimated = false; } public boolean isanimated() { return isanimated; } private runnable r = new runnable() { public void run() { animatemarkerposition = getnewposition(animatemarkerposition, endposition); if(drawmarker) animatemarker.setposition(animatemarkerposition); if(drawline) { list<latlng> points = animateline.getpoints(); points.add(animatemarkerposition); animateline.setpoints(points); } if((animatemarkerposition.latitude == endposition.latitude && animatemarkerposition.longitude == endposition.longitude)) { if(step == animatepositionlist.size() - 2) { isanimated = false; totalanimatedistance = 0; if(manimatelistener != null) manimatelistener.onfinish(); } else { step++; beginposition = animatepositionlist.get(step); endposition = animatepositionlist.get(step + 1); animatemarkerposition = beginposition; if(flatmarker && step + 3 < animatepositionlist.size() - 1) { float rotation = getbearing(animatemarkerposition, animatepositionlist.get(step + 3)) + 180; animatemarker.setrotation(rotation); } if(manimatelistener != null) manimatelistener.onprogress(step, animatepositionlist.size()); } } if(cameralock && (totalanimatedistance > animatecamera || !isanimated)) { totalanimatedistance = 0; float bearing = getbearing(beginposition, endposition); cameraposition.builder camerabuilder = new cameraposition.builder() .target(animatemarkerposition).bearing(bearing); if(iscameratilt) camerabuilder.tilt(90); else camerabuilder.tilt(gm.getcameraposition().tilt); if(iscamerazoom) camerabuilder.zoom(zoom); else camerabuilder.zoom(gm.getcameraposition().zoom); cameraposition cameraposition = camerabuilder.build(); gm.animatecamera(cameraupdatefactory.newcameraposition(cameraposition)); } if(isanimated) { new handler().postdelayed(r, animatespeed); } } }; public marker getanimatemarker() { return animatemarker; } public polyline getanimatepolyline() { return animateline; } private latlng getnewposition(latlng begin, latlng end) { double lat = math.abs(begin.latitude - end.latitude); double lng = math.abs(begin.longitude - end.longitude); double dis = math.sqrt(math.pow(lat, 2) + math.pow(lng, 2)); if(dis >= animatedistance) { double angle = -1; if(begin.latitude <= end.latitude && begin.longitude <= end.longitude) angle = math.todegrees(math.atan(lng / lat)); else if(begin.latitude > end.latitude && begin.longitude <= end.longitude) angle = (90 - math.todegrees(math.atan(lng / lat))) + 90; else if(begin.latitude > end.latitude && begin.longitude > end.longitude) angle = math.todegrees(math.atan(lng / lat)) + 180; else if(begin.latitude <= end.latitude && begin.longitude > end.longitude) angle = (90 - math.todegrees(math.atan(lng / lat))) + 270; double x = math.cos(math.toradians(angle)) * animatedistance; double y = math.sin(math.toradians(angle)) * animatedistance; totalanimatedistance += animatedistance; double finallat = begin.latitude + x; double finallng = begin.longitude + y; return new latlng(finallat, finallng); } else { return end; } } private float getbearing(latlng begin, latlng end) { double lat = math.abs(begin.latitude - end.latitude); double lng = math.abs(begin.longitude - end.longitude); if(begin.latitude < end.latitude && begin.longitude < end.longitude) return (float)(math.todegrees(math.atan(lng / lat))); else if(begin.latitude >= end.latitude && begin.longitude < end.longitude) return (float)((90 - math.todegrees(math.atan(lng / lat))) + 90); else if(begin.latitude >= end.latitude && begin.longitude >= end.longitude) return (float)(math.todegrees(math.atan(lng / lat)) + 180); else if(begin.latitude < end.latitude && begin.longitude >= end.longitude) return (float)((90 - math.todegrees(math.atan(lng / lat))) + 270); return -1; } public void setcameraupdatespeed(int speed) { if(speed == speed_very_slow) { animatedistance = 0.000005; animatespeed = 20; animatecamera = 0.0004; zoom = 19; } else if(speed == speed_slow) { animatedistance = 0.00001; animatespeed = 20; animatecamera = 0.0008; zoom = 18; } else if(speed == speed_normal) { animatedistance = 0.00005; animatespeed = 20; animatecamera = 0.002; zoom = 16; } else if(speed == speed_fast) { animatedistance = 0.0001; animatespeed = 20; animatecamera = 0.004; zoom = 15; } else if(speed == speed_very_fast) { animatedistance = 0.0005; animatespeed = 20; animatecamera = 0.004; zoom = 13; } else { animatedistance = 0.00005; animatespeed = 20; animatecamera = 0.002; zoom = 16; } } } mainactivity.java
@override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_map); gd = new googledirection(this); gd.setondirectionresponselistener(new ondirectionresponselistener() { public void onresponse(string status, document doc, googledirection gd) { mdoc = doc; polyline = mgooglemap.addpolyline(gd.getpolyline(doc, 10, color.red)); } }); route.setonclicklistener(new view.onclicklistener() { @override public void onclick(view view) { // todo auto-generated method stub latlng newlatlong1 = new latlng(la1d, lo1d); latlng newlatlong2 = new latlng(la2d, lo2d); gd.setlogging(true); gd.request(newlatlong2, newlatlong1, googledirection.mode_driving); } });
you need use google directions api. hit given url using http request , json response. google service calculates direction between given locations.
sample code:
pathgooglemapactivity.java
import java.util.arraylist; import java.util.hashmap; import java.util.list; import org.json.jsonobject; import android.graphics.color; import android.os.asynctask; import android.os.bundle; import android.support.v4.app.fragmentactivity; import android.util.log; import com.google.android.gms.maps.cameraupdatefactory; import com.google.android.gms.maps.googlemap; import com.google.android.gms.maps.supportmapfragment; import com.google.android.gms.maps.model.latlng; import com.google.android.gms.maps.model.markeroptions; import com.google.android.gms.maps.model.polylineoptions; public class pathgooglemapactivity extends fragmentactivity { private static final latlng lower_manhattan = new latlng(40.722543, -73.998585); private static final latlng brooklyn_bridge = new latlng(40.7057, -73.9964); private static final latlng wall_street = new latlng(40.7064, -74.0094); googlemap googlemap; final string tag = "pathgooglemapactivity"; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_path_google_map); supportmapfragment fm = (supportmapfragment) getsupportfragmentmanager() .findfragmentbyid(r.id.map); googlemap = fm.getmap(); markeroptions options = new markeroptions(); options.position(lower_manhattan); options.position(brooklyn_bridge); options.position(wall_street); googlemap.addmarker(options); string url = getmapsapidirectionsurl(); readtask downloadtask = new readtask(); downloadtask.execute(url); googlemap.movecamera(cameraupdatefactory.newlatlngzoom(brooklyn_bridge, 13)); addmarkers(); } private string getmapsapidirectionsurl() { string waypoints = "waypoints=optimize:true|" + lower_manhattan.latitude + "," + lower_manhattan.longitude + "|" + "|" + brooklyn_bridge.latitude + "," + brooklyn_bridge.longitude + "|" + wall_street.latitude + "," + wall_street.longitude; string sensor = "sensor=false"; string params = waypoints + "&" + sensor; string output = "json"; string url = "https://maps.googleapis.com/maps/api/directions/" + output + "?" + params; return url; } private void addmarkers() { if (googlemap != null) { googlemap.addmarker(new markeroptions().position(brooklyn_bridge) .title("first point")); googlemap.addmarker(new markeroptions().position(lower_manhattan) .title("second point")); googlemap.addmarker(new markeroptions().position(wall_street) .title("third point")); } } private class readtask extends asynctask { @override protected string doinbackground(string... url) { string data = ""; try { httpconnection http = new httpconnection(); data = http.readurl(url[0]); } catch (exception e) { log.d("background task", e.tostring()); } return data; } @override protected void onpostexecute(string result) { super.onpostexecute(result); new parsertask().execute(result); } } private class parsertask extends asynctask>>> { @override protected list>> doinbackground( string... jsondata) { jsonobject jobject; list>> routes = null; try { jobject = new jsonobject(jsondata[0]); pathjsonparser parser = new pathjsonparser(); routes = parser.parse(jobject); } catch (exception e) { e.printstacktrace(); } return routes; } @override protected void onpostexecute(list>> routes) { arraylist points = null; polylineoptions polylineoptions = null; // traversing through routes (int = 0; < routes.size(); i++) { points = new arraylist(); polylineoptions = new polylineoptions(); list> path = routes.get(i); (int j = 0; j < path.size(); j++) { hashmap point = path.get(j); double lat = double.parsedouble(point.get("lat")); double lng = double.parsedouble(point.get("lng")); latlng position = new latlng(lat, lng); points.add(position); } polylineoptions.addall(points); polylineoptions.width(2); polylineoptions.color(color.blue); } googlemap.addpolyline(polylineoptions); } } } httpconnection.java
import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstream; import java.io.inputstreamreader; import java.net.httpurlconnection; import java.net.url; import android.util.log; public class httpconnection { public string readurl(string mapsapidirectionsurl) throws ioexception { string data = ""; inputstream istream = null; httpurlconnection urlconnection = null; try { url url = new url(mapsapidirectionsurl); urlconnection = (httpurlconnection) url.openconnection(); urlconnection.connect(); istream = urlconnection.getinputstream(); bufferedreader br = new bufferedreader(new inputstreamreader( istream)); stringbuffer sb = new stringbuffer(); string line = ""; while ((line = br.readline()) != null) { sb.append(line); } data = sb.tostring(); br.close(); } catch (exception e) { log.d("exception while reading url", e.tostring()); } { istream.close(); urlconnection.disconnect(); } return data; } } pathjsonparser.java
import java.util.arraylist; import java.util.hashmap; import java.util.list; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject; import com.google.android.gms.maps.model.latlng; public class pathjsonparser { public list>> parse(jsonobject jobject) { list>> routes = new arraylist>>(); jsonarray jroutes = null; jsonarray jlegs = null; jsonarray jsteps = null; try { jroutes = jobject.getjsonarray("routes"); /** traversing routes */ (int = 0; < jroutes.length(); i++) { jlegs = ((jsonobject) jroutes.get(i)).getjsonarray("legs"); list> path = new arraylist>(); /** traversing legs */ (int j = 0; j < jlegs.length(); j++) { jsteps = ((jsonobject) jlegs.get(j)).getjsonarray("steps"); /** traversing steps */ (int k = 0; k < jsteps.length(); k++) { string polyline = ""; polyline = (string) ((jsonobject) ((jsonobject) jsteps .get(k)).get("polyline")).get("points"); list list = decodepoly(polyline); /** traversing points */ (int l = 0; l < list.size(); l++) { hashmap hm = new hashmap(); hm.put("lat", double.tostring(((latlng) list.get(l)).latitude)); hm.put("lng", double.tostring(((latlng) list.get(l)).longitude)); path.add(hm); } } routes.add(path); } } } catch (jsonexception e) { e.printstacktrace(); } catch (exception e) { } return routes; } /** * method courtesy : * jeffreysambells.com/2010/05/27 * /decoding-polylines-from-google-maps-direction-api-with-java * */ private list decodepoly(string encoded) { list poly = new arraylist(); int index = 0, len = encoded.length(); int lat = 0, lng = 0; while (index < len) { int b, shift = 0, result = 0; { b = encoded.charat(index++) - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1)); lat += dlat; shift = 0; result = 0; { b = encoded.charat(index++) - 63; result |= (b & 0x1f) << shift; shift += 5; } while (b >= 0x20); int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1)); lng += dlng; latlng p = new latlng((((double) lat / 1e5)), (((double) lng / 1e5))); poly.add(p); } return poly; } } for more details, please refer here.
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