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added getting directions for whole route

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Sem van der Hoeven
2021-01-04 15:20:24 +01:00
parent 96f32ccdbc
commit 5e218f3b99
4 changed files with 209 additions and 15 deletions
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10
app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java
View File

@@ -12,6 +12,8 @@ import android.view.View;
import android.view.ViewGroup;
import com.a1.nextlocation.R;
import com.a1.nextlocation.data.Location;
import com.a1.nextlocation.data.Route;
import com.a1.nextlocation.json.DirectionsResult;
import com.a1.nextlocation.network.ApiHandler;
import com.a1.nextlocation.network.DirectionsListener;
@@ -37,11 +39,17 @@ public class RouteFragment extends Fragment {
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ApiHandler.INSTANCE.getDirections(8.681436,49.41461,8.687872,49.420318);
// ApiHandler.INSTANCE.getDirections(8.681436,49.41461,8.687872,49.420318);
Route r = new Route("test");
r.addLocation(new Location("test",8.681436,49.41461,"route",null));
r.addLocation(new Location("test",8.687872,49.420318,"route",null));
ApiHandler.INSTANCE.getDirections(r);
}
public void onDirectionsAvailable(DirectionsResult result) {
Log.d(TAG, "onDirectionsAvailable: got result! " + result);
}
}

73
app/src/main/java/com/a1/nextlocation/json/DirectionsResult.java
View File

@@ -8,7 +8,9 @@ import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonPrimitive;
import org.json.JSONArray;
import org.osmdroid.util.GeoPoint;
import java.lang.reflect.Array;
@@ -50,6 +52,10 @@ public class DirectionsResult {
this.steps.add(step);
}
/**
* parses a given json string into this object. It gets all the waypoints and steps and combines them so that every step also has the correct coordinates associated with it
* @param json the json string to parse.
*/
public void parse(String json) {
Gson gson = new GsonBuilder().setPrettyPrinting().create();
@@ -59,6 +65,7 @@ public class DirectionsResult {
this.wayPointCoordinates = new double[wayPointCoordinates.size()][2];
// fill the way point coordinates list for later use
for (int i = 0; i < wayPointCoordinates.size(); i++) {
JsonElement j = wayPointCoordinates.get(i);
JsonArray arr = j.getAsJsonArray();
@@ -67,7 +74,10 @@ public class DirectionsResult {
}
JsonObject segment = properties.getAsJsonArray("segments").get(0).getAsJsonObject();
JsonArray segments = properties.getAsJsonArray("segments");
for (JsonElement element : segments) {
JsonObject segment = element.getAsJsonObject();
setDistance(segment.get("distance").getAsDouble());
setDuration(segment.get("duration").getAsDouble());
@@ -75,9 +85,12 @@ public class DirectionsResult {
JsonArray steps = segment.getAsJsonArray("steps");
for (JsonElement j : steps) {
DirectionsStep step = gson.fromJson(j,DirectionsStep.class);
double lat;
double longl;
// kinda stinky but it works
for (int i = 0; i < 2; i++) {
lat = this.wayPointCoordinates[step.getWay_points().get(i)][0];
longl = this.wayPointCoordinates[step.getWay_points().get(i)][1];
@@ -87,6 +100,64 @@ public class DirectionsResult {
addStep(step);
Log.d(TAG, "parse: added step" + step);
}
}
}
public void parseRoute(String json) {
Gson gson = new GsonBuilder().setPrettyPrinting().create();
JsonArray routes = JsonParser.parseString(json).getAsJsonObject().getAsJsonArray("routes");
for (JsonElement element : routes) {
JsonObject route = element.getAsJsonObject();
JsonObject summary = route.getAsJsonObject("summary");
this.distance = summary.get("distance").getAsDouble();
this.duration = summary.get("duration").getAsDouble();
JsonPrimitive geometry = route.getAsJsonPrimitive("geometry");
JsonArray wayPointCoordinates = GeometryDecoder.decodeGeometry(geometry.getAsString(),false);
this.wayPointCoordinates = new double[wayPointCoordinates.size()][2];
// fill the way point coordinates list for later use
for (int i = 0; i < wayPointCoordinates.size(); i++) {
JsonElement j = wayPointCoordinates.get(i);
JsonArray arr = j.getAsJsonArray();
this.wayPointCoordinates[i][0] = arr.get(0).getAsDouble();
this.wayPointCoordinates[i][1] = arr.get(1).getAsDouble();
}
JsonArray segments = route.getAsJsonArray("segments");
for (JsonElement e : segments) {
JsonObject segment = e.getAsJsonObject();
setDistance(segment.get("distance").getAsDouble());
setDuration(segment.get("duration").getAsDouble());
JsonArray steps = segment.getAsJsonArray("steps");
for (JsonElement j : steps) {
DirectionsStep step = gson.fromJson(j,DirectionsStep.class);
double lat;
double longl;
// kinda stinky but it works
for (int i = 0; i < 2; i++) {
lat = this.wayPointCoordinates[step.getWay_points().get(i)][0];
longl = this.wayPointCoordinates[step.getWay_points().get(i)][1];
step.getWaypoints()[i] = new GeoPoint(lat,longl);
}
addStep(step);
Log.d(TAG, "parse: added step" + step);
}
}
}
}

63
app/src/main/java/com/a1/nextlocation/json/GeometryDecoder.java Normal file
View File

@@ -0,0 +1,63 @@
package com.a1.nextlocation.json;
import com.google.gson.JsonArray;
import org.json.JSONArray;
import org.json.JSONException;
/**
* source: https://github.com/GIScience/openrouteservice-docs#geometry-decoding
*/
public class GeometryDecoder {
public static JsonArray decodeGeometry(String encodedGeometry, boolean inclElevation) {
JsonArray geometry = new JsonArray();
int len = encodedGeometry.length();
int index = 0;
int lat = 0;
int lng = 0;
int ele = 0;
while (index < len) {
int result = 1;
int shift = 0;
int b;
do {
b = encodedGeometry.charAt(index++) - 63 - 1;
result += b << shift;
shift += 5;
} while (b >= 0x1f);
lat += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
result = 1;
shift = 0;
do {
b = encodedGeometry.charAt(index++) - 63 - 1;
result += b << shift;
shift += 5;
} while (b >= 0x1f);
lng += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
if(inclElevation){
result = 1;
shift = 0;
do {
b = encodedGeometry.charAt(index++) - 63 - 1;
result += b << shift;
shift += 5;
} while (b >= 0x1f);
ele += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
}
JsonArray location = new JsonArray();
location.add(lat / 1E5);
location.add(lng / 1E5);
if(inclElevation){
location.add((float) (ele / 100));
}
geometry.add(location);
}
return geometry;
}
}

52
app/src/main/java/com/a1/nextlocation/network/ApiHandler.java
View File

@@ -5,6 +5,8 @@ import android.util.Log;
import com.a1.nextlocation.data.Location;
import com.a1.nextlocation.data.Route;
import com.a1.nextlocation.json.DirectionsResult;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import java.io.IOException;
import java.util.ArrayList;
@@ -15,6 +17,7 @@ import java.util.concurrent.atomic.AtomicReference;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
public enum ApiHandler {
@@ -72,6 +75,55 @@ public enum ApiHandler {
this.listeners.add(listener);
}
public void getDirections(Route route) {
// for (int i = 0; i < route.getLocations().size()-1; i+= 2) {
// Location start = route.getLocations().get(i);
// Location end = route.getLocations().get(i+1);
// getDirections(start,end);
// }
ArrayList<double[]> allCoords = new ArrayList<>();
for (Location location : route.getLocations()) {
allCoords.add(location.getCoordinatesAsDoubles());
}
String body = "{\"coordinates\":" + new Gson().toJson(allCoords) + "}";
String requestUrl = BASE_URL + DIRECTIONS_MODE + "?api_key=" + API_KEY;
Thread t = new Thread(() -> {
RequestBody requestBody = RequestBody.create(body,JSON);
Request request = new Request.Builder()
.url(requestUrl)
.post(requestBody)
.build();
try (Response response = client.newCall(request).execute()) {
if (response.body() != null) {
String responseString = Objects.requireNonNull(response.body()).string();
Log.d(TAG, "getDirections: got response: " + responseString);
DirectionsResult result = new DirectionsResult();
result.parseRoute(responseString);
Log.d(TAG, "getDirections: " + result.getSteps().size());
for (DirectionsListener listener : listeners) {
listener.onDirectionsAvailable(result);
}
}
} catch (IOException e) {
Log.d(TAG, "getDirections: caught exception: " + e.getLocalizedMessage());
}
});
t.start();
}