Generate an optimized route

package com.mapbox.mapboxandroiddemo.examples.javaservices;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import com.mapbox.api.directions.v5.DirectionsCriteria;
import com.mapbox.api.directions.v5.models.DirectionsRoute;
import com.mapbox.api.optimization.v1.MapboxOptimization;
import com.mapbox.api.optimization.v1.models.OptimizationResponse;
import com.mapbox.geojson.Feature;
import com.mapbox.geojson.FeatureCollection;
import com.mapbox.geojson.LineString;
import com.mapbox.geojson.Point;
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.LineLayer;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import java.util.ArrayList;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import timber.log.Timber;
import static com.mapbox.core.constants.Constants.PRECISION_6;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconIgnorePlacement;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconOffset;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconSize;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineWidth;
/**
* Use Mapbox Java Services to request and compare normal directions with time optimized directions.
*/
public class OptimizationActivity extends AppCompatActivity implements OnMapReadyCallback,
MapboxMap.OnMapClickListener, MapboxMap.OnMapLongClickListener {
private static final String ICON_GEOJSON_SOURCE_ID = "icon-source-id";
private static final String FIRST = "first";
private static final String ANY = "any";
private static final String TEAL_COLOR = "#23D2BE";
private static final float POLYLINE_WIDTH = 5;
private MapView mapView;
private MapboxMap mapboxMap;
private DirectionsRoute optimizedRoute;
private MapboxOptimization optimizedClient;
private List<Point> stops = new ArrayList<>();
private Point origin;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mapbox access token is configured here. This needs to be called either in your application
// object or in the same activity which contains the mapview.
Mapbox.getInstance(this, getString(R.string.access_token));
// This contains the MapView in XML and needs to be called after the access token is configured.
setContentView(R.layout.activity_javaservices_optimization);
// Add the origin Point to the list
addFirstStopToStopsList();
// Setup the MapView
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
mapboxMap.setStyle(Style.MAPBOX_STREETS, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
// Add origin and destination to the mapboxMap
initMarkerIconSymbolLayer(style);
initOptimizedRouteLineLayer(style);
Toast.makeText(OptimizationActivity.this, R.string.click_instructions, Toast.LENGTH_SHORT).show();
mapboxMap.addOnMapClickListener(OptimizationActivity.this);
mapboxMap.addOnMapLongClickListener(OptimizationActivity.this);
}
});
}
private void initMarkerIconSymbolLayer(@NonNull Style loadedMapStyle) {
// Add the marker image to map
loadedMapStyle.addImage("icon-image", BitmapFactory.decodeResource(
this.getResources(), R.drawable.red_marker));
// Add the source to the map
loadedMapStyle.addSource(new GeoJsonSource(ICON_GEOJSON_SOURCE_ID,
Feature.fromGeometry(Point.fromLngLat(origin.longitude(), origin.latitude()))));
loadedMapStyle.addLayer(new SymbolLayer("icon-layer-id", ICON_GEOJSON_SOURCE_ID).withProperties(
iconImage("icon-image"),
iconSize(1f),
iconAllowOverlap(true),
iconIgnorePlacement(true),
iconOffset(new Float[] {0f, -4f})
));
}
private void initOptimizedRouteLineLayer(@NonNull Style loadedMapStyle) {
loadedMapStyle.addSource(new GeoJsonSource("optimized-route-source-id"));
loadedMapStyle.addLayerBelow(new LineLayer("optimized-route-layer-id", "optimized-route-source-id")
.withProperties(
lineColor(Color.parseColor(TEAL_COLOR)),
lineWidth(POLYLINE_WIDTH)
), "icon-layer-id");
}
@Override
public boolean onMapClick(@NonNull LatLng point) {
// Optimization API is limited to 12 coordinate sets
if (alreadyTwelveMarkersOnMap()) {
Toast.makeText(OptimizationActivity.this, R.string.only_twelve_stops_allowed, Toast.LENGTH_LONG).show();
} else {
Style style = mapboxMap.getStyle();
if (style != null) {
addDestinationMarker(style, point);
addPointToStopsList(point);
getOptimizedRoute(style, stops);
}
}
return true;
}
@Override
public boolean onMapLongClick(@NonNull LatLng point) {
stops.clear();
if (mapboxMap != null) {
Style style = mapboxMap.getStyle();
if (style != null) {
resetDestinationMarkers(style);
removeOptimizedRoute(style);
addFirstStopToStopsList();
return true;
}
}
return false;
}
private void resetDestinationMarkers(@NonNull Style style) {
GeoJsonSource optimizedLineSource = style.getSourceAs(ICON_GEOJSON_SOURCE_ID);
if (optimizedLineSource != null) {
optimizedLineSource.setGeoJson(Point.fromLngLat(origin.longitude(), origin.latitude()));
}
}
private void removeOptimizedRoute(@NonNull Style style) {
GeoJsonSource optimizedLineSource = style.getSourceAs("optimized-route-source-id");
if (optimizedLineSource != null) {
optimizedLineSource.setGeoJson(FeatureCollection.fromFeatures(new Feature[] {}));
}
}
private boolean alreadyTwelveMarkersOnMap() {
return stops.size() == 12;
}
private void addDestinationMarker(@NonNull Style style, LatLng point) {
List<Feature> destinationMarkerList = new ArrayList<>();
for (Point singlePoint : stops) {
destinationMarkerList.add(Feature.fromGeometry(
Point.fromLngLat(singlePoint.longitude(), singlePoint.latitude())));
}
destinationMarkerList.add(Feature.fromGeometry(Point.fromLngLat(point.getLongitude(), point.getLatitude())));
GeoJsonSource iconSource = style.getSourceAs(ICON_GEOJSON_SOURCE_ID);
if (iconSource != null) {
iconSource.setGeoJson(FeatureCollection.fromFeatures(destinationMarkerList));
}
}
private void addPointToStopsList(LatLng point) {
stops.add(Point.fromLngLat(point.getLongitude(), point.getLatitude()));
}
private void addFirstStopToStopsList() {
// Set first stop
origin = Point.fromLngLat(30.335098600000038, 59.9342802);
stops.add(origin);
}
private void getOptimizedRoute(@NonNull final Style style, List<Point> coordinates) {
optimizedClient = MapboxOptimization.builder()
.source(FIRST)
.destination(ANY)
.coordinates(coordinates)
.overview(DirectionsCriteria.OVERVIEW_FULL)
.profile(DirectionsCriteria.PROFILE_DRIVING)
.accessToken(Mapbox.getAccessToken())
.build();
optimizedClient.enqueueCall(new Callback<OptimizationResponse>() {
@Override
public void onResponse(Call<OptimizationResponse> call, Response<OptimizationResponse> response) {
if (!response.isSuccessful()) {
Timber.d( getString(R.string.no_success));
Toast.makeText(OptimizationActivity.this, R.string.no_success, Toast.LENGTH_SHORT).show();
return;
} else {
if (response.body().trips().isEmpty()) {
Timber.d("%s size = %s", getString(R.string.successful_but_no_routes), response.body().trips().size());
Toast.makeText(OptimizationActivity.this, R.string.successful_but_no_routes,
Toast.LENGTH_SHORT).show();
return;
}
}
// Get most optimized route from API response
optimizedRoute = response.body().trips().get(0);
drawOptimizedRoute(style, optimizedRoute);
}
@Override
public void onFailure(Call<OptimizationResponse> call, Throwable throwable) {
Timber.d("Error: %s", throwable.getMessage());
}
});
}
private void drawOptimizedRoute(@NonNull Style style, DirectionsRoute route) {
GeoJsonSource optimizedLineSource = style.getSourceAs("optimized-route-source-id");
if (optimizedLineSource != null) {
optimizedLineSource.setGeoJson(FeatureCollection.fromFeature(Feature.fromGeometry(
LineString.fromPolyline(route.geometry(), PRECISION_6))));
}
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
protected void onDestroy() {
super.onDestroy();
// Cancel the directions API request
if (optimizedClient != null) {
optimizedClient.cancelCall();
}
if (mapboxMap != null) {
mapboxMap.removeOnMapClickListener(this);
}
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}