Change the unit value of the distance and time getting from map API in android? -
i building android application using google map api distance , time between 2 lat,lng. problem sometime getting value in km , time in meter.
is there way fix unit of distance , time value returning google api. here code.
public class directionsjsonparser { /** receives jsonobject , returns list of lists containing latitude , longitude */ public list<list<hashmap<string,string>>> parse(jsonobject jobject){ list<list<hashmap<string, string>>> routes = new arraylist<list<hashmap<string,string>>>() ; jsonarray jroutes = null; jsonarray jlegs = null; jsonarray jsteps = null; jsonobject jdistance = null; jsonobject jduration = null; try { jroutes = jobject.getjsonarray("routes"); /** traversing routes */ for(int i=0;i<jroutes.length();i++){ jlegs = ( (jsonobject)jroutes.get(i)).getjsonarray("legs"); list<hashmap<string, string>> path = new arraylist<hashmap<string, string>>(); /** traversing legs */ for(int j=0;j<jlegs.length();j++){ /** getting distance json data */ jdistance = ((jsonobject) jlegs.get(j)).getjsonobject("distance"); hashmap<string, string> hmdistance = new hashmap<string, string>(); hmdistance.put("distance", jdistance.getstring("text")); /** getting duration json data */ jduration = ((jsonobject) jlegs.get(j)).getjsonobject("duration"); hashmap<string, string> hmduration = new hashmap<string, string>(); hmduration.put("duration", jduration.getstring("text")); /** adding distance object path */ path.add(hmdistance); /** adding duration object path */ path.add(hmduration); jsteps = ( (jsonobject)jlegs.get(j)).getjsonarray("steps"); /** traversing steps */ for(int k=0;k<jsteps.length();k++){ string polyline = ""; polyline = (string)((jsonobject)((jsonobject)jsteps.get(k)).get("polyline")).get("points"); list<latlng> list = decodepoly(polyline); /** traversing points */ for(int l=0;l<list.size();l++){ hashmap<string, string> hm = new hashmap<string, string>(); 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 decode polyline points * courtesy : jeffreysambells.com/2010/05/27/decoding-polylines-from-google-maps-direction-api-with-java * */ private list<latlng> decodepoly(string encoded) { list<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 p = new latlng((((double) lat / 1e5)), (((double) lng / 1e5))); poly.add(p); } return poly; } here the function distance , time in string.
/** * class parse google places in json format */ private class parsertask extends asynctask<string, integer, list<list<hashmap<string, string>>>> { // parsing data in non-ui thread @override protected list<list<hashmap<string, string>>> doinbackground(string... jsondata) { jsonobject jobject; list<list<hashmap<string, string>>> routes = null; try { jobject = new jsonobject(jsondata[0]); directionsjsonparser parser = new directionsjsonparser(); // starts parsing data routes = parser.parse(jobject); } catch (exception e) { e.printstacktrace(); } return routes; } // executes in ui thread, after parsing process @override protected void onpostexecute(list<list<hashmap<string, string>>> result) { arraylist<latlng> points = null; polylineoptions lineoptions = null; markeroptions markeroptions = new markeroptions(); string distance = ""; string duration = ""; if (result.size() < 1) { toast.maketext(getbasecontext(), "no points", toast.length_short).show(); return; } // traversing through routes (int = 0; < result.size(); i++) { points = new arraylist<latlng>(); lineoptions = new polylineoptions(); // fetching i-th route list<hashmap<string, string>> path = result.get(i); // fetching points in i-th route (int j = 0; j < path.size(); j++) { hashmap<string, string> point = path.get(j); if (j == 0) { // distance list distance = (string) point.get("distance"); continue; } else if (j == 1) { // duration list duration = (string) point.get("duration"); continue; } double lat = double.parsedouble(point.get("lat")); double lng = double.parsedouble(point.get("lng")); latlng position = new latlng(lat, lng); points.add(position); } // adding points in route lineoptions lineoptions.addall(points); lineoptions.width(10); lineoptions.color(color.blue); } toast.maketext(getapplicationcontext(), "distance:" + distance + ", duration:" + duration, toast.length_long).show(); map.addpolyline(lineoptions); } } i need final return should km in distance , hh:mm in hr.
from code, looks getting results direction web api.
in code,
/** getting distance json data */ jdistance = ((jsonobject) jlegs.get(j)).getjsonobject("distance"); hashmap<string, string> hmdistance = new hashmap<string, string>(); hmdistance.put("distance", jdistance.getstring("text")); notices getting human-readable distance "text", rather integer value value.
look @ piece of json example in documentation
... }, "distance": { "value": 2137146, "text": "1,328 mi" }, "start_loc... ... here, ..leg[0].distance.text human-readable value in miles. should instead integer value ..leg[0].distance.value, in meter.
so in short, value in meter, not text.
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