I'm attempting to show a route on a map for two specified points, with the end goal of generating step-by-step directions. I'm using the Directions API provided by MapBox and have structured my code based off of this example.
The map appears to load as expected and there are no errors in regards to displaying the map, however there is no route/line present for the specified call, or anywhere on the map for that matter.
I have attempted to use different origins and destinations however still fail to generate the expected result as demonstrated in the example provided.
Code:
@SuppressWarnings("deprecation")
public class MainActivity extends AppCompatActivity implements
OnMapReadyCallback, PermissionsListener, View.OnClickListener, MapboxMap.OnMapClickListener, MapboxMap.OnMarkerClickListener {
private MapView mapView;
private MapboxMap mapboxMap;
private static final String TAG = "MainActivity";
private MapboxDirections client;
private DirectionsRoute currentRoute;
private static final String ROUTE_LAYER_ID = "route-layer-id";
private static final String ROUTE_SOURCE_ID = "route-source-id";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mapbox access token is configured here.
Mapbox.getInstance(this, getString(R.string.mapbox_access_token));
setContentView(R.layout.activity_main);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
mapboxMap.addOnMapClickListener(this);
mapboxMap.setStyle(Style.MAPBOX_STREETS,
new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
enableLocationComponent(style);
Point origin = Point.fromLngLat(-3.588098, 37.176164);
Point destination = Point.fromLngLat(-3.601845, 37.184080);
initSource(style);
initLayers(style);
getRoute(origin, destination);
}
});
mapboxMap.setOnMarkerClickListener(this);
}
private void initLayers(@NonNull Style loadedMapStyle) {
LineLayer routeLayer = new LineLayer(ROUTE_LAYER_ID, ROUTE_SOURCE_ID);
routeLayer.setProperties(
lineCap(Property.LINE_CAP_ROUND),
lineJoin(Property.LINE_JOIN_ROUND),
lineWidth(5f),
lineColor(Color.parseColor("#009688"))
);
loadedMapStyle.addLayer(routeLayer);
}
private void initSource(@NonNull Style loadedMapStyle) {
loadedMapStyle.addSource(new GeoJsonSource(ROUTE_SOURCE_ID,
FeatureCollection.fromFeatures(new Feature[] {})));
}
private void getRoute(Point origin, Point destination) {
client = MapboxDirections.builder()
.origin(origin)
.destination(destination)
.overview(DirectionsCriteria.OVERVIEW_FULL)
.profile(DirectionsCriteria.PROFILE_DRIVING)
.accessToken(Mapbox.getAccessToken())
.build();
client.enqueueCall(new Callback<DirectionsResponse>() {
@Override
public void onResponse(Call<DirectionsResponse> call, Response<DirectionsResponse> response) {
// You can get the generic HTTP info about the response
Timber.d("Response code: " + response.code());
if (response.body() == null) {
Timber.e("No routes found, make sure you set the right user and access token.");
return;
} else if (response.body().routes().size() < 1) {
Timber.e("No routes found");
return;
}
// Get the directions route
currentRoute = response.body().routes().get(0);
// Make a toast which displays the route's distance
/*Toast.makeText(MainActivity.this, String.format(
getString(R.string.directions_activity_toast_message),
currentRoute.distance()), Toast.LENGTH_SHORT).show();*/
if (mapboxMap != null) {
mapboxMap.getStyle(new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
// Retrieve and update the source designated for showing the directions route
GeoJsonSource source = style.getSourceAs(ROUTE_SOURCE_ID);
// Create a LineString with the directions route's geometry and
// reset the GeoJSON source for the route LineLayer source
if (source != null) {
Timber.d("onResponse: source != null");
source.setGeoJson(FeatureCollection.fromFeature(
Feature.fromGeometry(LineString.fromPolyline(currentRoute.geometry(), PRECISION_6))));
}
}
});
}
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable throwable) {
Timber.e("Error: " + throwable.getMessage());
Toast.makeText(MainActivity.this, "Error: " + throwable.getMessage(),
Toast.LENGTH_SHORT).show();
}
});
}
Mbgl? – langsmithMbgl: pastebin.com/pmEVVC6D – LearningToNLP