-2
I’m making an app that uses the google maps Directions api, which returns me a json, for example:
{
"geocoded_waypoints" : [
{
"geocoder_status" : "OK",
"place_id" : "ChIJeRLP8gx3GZURImtwaSWGJgY",
"types" : [ "street_address" ]
},
{
"geocoder_status" : "OK",
"place_id" : "ChIJd515ygl3GZURnfYfYs3XfW4",
"types" : [ "street_address" ]
}
],
"routes" : [
{
"bounds" : {
"northeast" : {
"lat" : -30.0096913,
"lng" : -51.1507108
},
"southwest" : {
"lat" : -30.0126831,
"lng" : -51.15656300000001
}
},
"copyrights" : "Dados cartográficos ©2017 Google",
"legs" : [
{
"distance" : {
"text" : "0,8 km",
"value" : 847
},
"duration" : {
"text" : "10 minutos",
"value" : 624
},
"end_address" : "Tv. Prof. Emetério García Fernandes, 193 - Cristo Redentor, Porto Alegre - RS, 91370-380, Brasil",
"end_location" : {
"lat" : -30.0126831,
"lng" : -51.1507108
},
"start_address" : "Av. Bernardi, 61 - Cristo Redentor, Porto Alegre - RS, 91040-030, Brasil",
"start_location" : {
"lat" : -30.0096913,
"lng" : -51.15656300000001
},
"steps" : [
{
"distance" : {
"text" : "0,8 km",
"value" : 847
},
"duration" : {
"text" : "10 minutos",
"value" : 624
},
"end_location" : {
"lat" : -30.0126831,
"lng" : -51.1507108
},
"html_instructions" : "Ande para Tv. Prof. Emetério García Fernandes, 193 - Cristo Redentor, Porto Alegre - RS, 91370-380, Brasil",
"polyline" : {
"points" : "pgdvDnofwHR?jBGEcE@cCBiC?[@yA@k@XO~AWt@Kp@Eh@C`AGfBK@sA@sAHAF?DyG"
},
"start_location" : {
"lat" : -30.0096913,
"lng" : -51.15656300000001
},
"steps" : [
{
"distance" : {
"text" : "71 m",
"value" : 71
},
"duration" : {
"text" : "1 min",
"value" : 43
},
"end_location" : {
"lat" : -30.0103252,
"lng" : -51.1565215
},
"html_instructions" : "Siga na direção \u003cb\u003esul\u003c/b\u003e na \u003cb\u003eAv. Bernardi\u003c/b\u003e em direção a \u003cb\u003eAv. Assis Brasil\u003c/b\u003e",
"polyline" : {
"points" : "pgdvDnofwHR?jBG"
},
"start_location" : {
"lat" : -30.0096913,
"lng" : -51.15656300000001
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "0,3 km",
"value" : 303
},
"duration" : {
"text" : "3 minutos",
"value" : 205
},
"end_location" : {
"lat" : -30.0103521,
"lng" : -51.1533792
},
"html_instructions" : "Vire à \u003cb\u003eesquerda\u003c/b\u003e na \u003cb\u003eAv. Assis Brasil\u003c/b\u003e",
"maneuver" : "turn-left",
"polyline" : {
"points" : "pkdvDfofwHEcE@cCBiC?[@yA@k@"
},
"start_location" : {
"lat" : -30.0103252,
"lng" : -51.1565215
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "0,2 km",
"value" : 247
},
"duration" : {
"text" : "3 minutos",
"value" : 200
},
"end_location" : {
"lat" : -30.0125358,
"lng" : -51.1529738
},
"html_instructions" : "Vire à \u003cb\u003edireita\u003c/b\u003e na \u003cb\u003eAv. do Forte\u003c/b\u003e",
"maneuver" : "turn-right",
"polyline" : {
"points" : "tkdvDr{ewHXO~AWt@Kp@Eh@C`AGfBK"
},
"start_location" : {
"lat" : -30.0103521,
"lng" : -51.1533792
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "81 m",
"value" : 81
},
"duration" : {
"text" : "1 min",
"value" : 64
},
"end_location" : {
"lat" : -30.012562,
"lng" : -51.1521285
},
"html_instructions" : "Vire à \u003cb\u003eesquerda\u003c/b\u003e na \u003cb\u003ePassagem Dois\u003c/b\u003e",
"maneuver" : "turn-left",
"polyline" : {
"points" : "jydvD`yewH@sA@sA"
},
"start_location" : {
"lat" : -30.0125358,
"lng" : -51.1529738
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "10 m",
"value" : 10
},
"duration" : {
"text" : "1 min",
"value" : 8
},
"end_location" : {
"lat" : -30.01265129999999,
"lng" : -51.1521164
},
"html_instructions" : "Vire à \u003cb\u003edireita\u003c/b\u003e na \u003cb\u003eR. Zéca Neto\u003c/b\u003e",
"maneuver" : "turn-right",
"polyline" : {
"points" : "nydvDxsewHHAF?"
},
"start_location" : {
"lat" : -30.012562,
"lng" : -51.1521285
},
"travel_mode" : "WALKING"
},
{
"distance" : {
"text" : "0,1 km",
"value" : 135
},
"duration" : {
"text" : "2 minutos",
"value" : 104
},
"end_location" : {
"lat" : -30.0126831,
"lng" : -51.1507108
},
"html_instructions" : "Vire à \u003cb\u003eesquerda\u003c/b\u003e na \u003cb\u003eTv. Prof. Emetério García Fernandes\u003c/b\u003e\u003cdiv style=\"font-size:0.9em\"\u003eO destino estará à direita\u003c/div\u003e",
"maneuver" : "turn-left",
"polyline" : {
"points" : "`zdvDvsewHDyG"
},
"start_location" : {
"lat" : -30.01265129999999,
"lng" : -51.1521164
},
"travel_mode" : "WALKING"
}
],
"travel_mode" : "WALKING"
}
],
"traffic_speed_entry" : [],
"via_waypoint" : []
}
],
"overview_polyline" : {
"points" : "pgdvDnofwH~BGEcE@cCBeDBeCXO~AWfBQjBKfBK@sA@sAHAF?DyG"
},
"summary" : "Av. Assis Brasil e Av. do Forte",
"warnings" : [
"Versão beta da rota a pé. Seja cuidadoso – Este trajeto pode não ter calçadas ou caminhos de pedestres."
],
"waypoint_order" : []
}
],
"status" : "OK"
}
I use gson to read this json and use in my application, one of the uses is this:
public void lerGSON(TransformJSONToGSONGoogleMapsDirections transform) {
if(transform.getStatus().equalsIgnoreCase("OK")) {
distance = transform.getRoutes().get(0).getLegs().get(0).getDistance().getText();
duration = transform.getRoutes().get(0).getLegs().get(0).getDuration().getText();
address = transform.getRoutes().get(0).getLegs().get(0).getEndAddress();
Log.d(TAG, "address: " + address); //Retorna null
ArrayList<Steps> steps = transform.getRoutes().get(0).getLegs().get(0).getSteps();
Log.d(TAG, "travel mode: " + steps.get(0).getTravelMode()); //Retorna null
latLng = new ArrayList<>();
for(int i = 0; i < steps.size(); i++) {
if(steps.get(i).getTravelMode().equalsIgnoreCase("WALKING")) {
String polyline = steps.get(i).getPolyline().getPoints();
for(LatLng p : decodePolyline(polyline)) {
latLng.add(p);
}
}
}
drawRoute(latLng, 255, 63, 81, 181);
setResults();
} else if(transform.getStatus().equalsIgnoreCase("ZERO_RESULTS")) {
criarMsgErro("Não foi possível traçar uma rota para esse destino!");
} else if(transform.getStatus().equalsIgnoreCase("OVER_QUERY_LIMIT")) {
criarMsgErro("Um erro interno ocorreu, por favor tente novamente!");
}
}
I’m not getting the travel_mode and the end_address json, I’ve checked the path several times and I think you’re right
cannot place gson classes because they are many (more than 20), but it is in the same json structure
and the value of travel_mode is not null in json
TransformJSONToGSONGoogleMapsDirections is the first class of gson, the first json object transform, therefore:
transform.getRoutes().get(0).getLegs().get(0).getEndAddress();
takes the end_address object of the Legs at position 0, of the Routes at position 0
And:
transform.getRoutes().get(0).getLegs().get(0).getSteps().get(0).getTravelMode();
takes the travel_mode object of Steps at position 0, Legs at position 0, Routes at position 0