Examples
Getting started (3)Create a simple map viewDynamically build a map viewSupport map fragmentDynamic styling (30)Add a new layer below labelsAdd a vector tile sourceHillshadingAdd a WMS sourceAdjust a layer's opacityAnimate marker positionAnimated image source (GIF)Icon update based on API responseChange a layer's colorChange a map's languageColor dependent on zoom levelClick to add photoIndoor MapSymbol layer iconsStyle with missing iconMarker following routePicture in picturePulsing layer opacityShow time lapseButton interaction stylingText anchor positionOpacity fadeShow and hide layersSymbolLayer iconsMultiple text formatsAdjust text labelsTransparent render surfaceUse an image sourceAnimated icon movementVariable label placementExtrusions (5)Adjust light location and colorDisplay 3D building height based on vector dataExtrude polygons for 3D indoor mappingRotate and tilt with 3D buildingsUse GeoJSON data to set extrusion heightCamera (5)Animate the map cameraFit camera in bounding boxRestrict map panningRotating cameraZoom to show a cluster's leavesData visualization (33)Baseball spray chartDisplay water depthBiometric fingerprintCalendar integrationCircle icon toggleCircleLayer clustersCircle to icon transitionCircle radiusCreate a line layerCreate hotspots from pointsData time lapseShow heatmap dataDraw a GeoJSON lineDraw a polygon with holesDraw multiple geometriesDraw a polygonJoin local JSON data with vector tile geometriesLine gradientLine behind moving iconMultiple expressionsIcon setting based on Feature propertyOutlined polygon holeSatellite land selectShared preferencesStyle circles categoricallyStyle lines using an identity property functionSpinning iconToggle collision detectionSymbolLayer clusteringSymbol layer info windowZoom-based icon switchUpdate a choropleth layer by zoom levelStyling heatmapsOffline (3)Cache managementA simple offline mapOffline managerQuerying the map (3)Building outlineQuery a map featureSelect a buildingMap style (4)Style attributionMapbox Studio styleLocal style or custom raster styleDefault stylesUser interaction (12)Click on single layerFeature countDrawing search areaSymbol layer icon size changeHighlighted lineInset mapLocation pickerBackground fogRecyclerView interactionSearch again in an areaSnaking directionsRecyclerView DirectionsImage generation (2)Snapshot NotificationShare snapshot imageDevice location (7)Track device locationBasic pulsing locationLocation camera optionsCustom pulsing locationCustomized location iconShow a user's locationShow a user's location on a map fragment

Marker following route

activity_lab_marker_following_route
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:mapbox="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".examples.labs.MarkerFollowingRouteActivity">
<com.mapbox.mapboxsdk.maps.MapView
android:id="@+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
mapbox:mapbox_cameraTargetLat="37.6177"
mapbox:mapbox_cameraTargetLng="-122.3915"
mapbox:mapbox_cameraZoom="12"/>
</FrameLayout>
MarkerFollowingRouteActivity.java
package com.mapbox.mapboxandroiddemo.examples.labs;
import android.animation.ObjectAnimator;
import android.animation.TypeEvaluator;
import android.animation.ValueAnimator;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import android.view.animation.LinearInterpolator;
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 com.mapbox.mapboxsdk.utils.BitmapUtils;
import java.io.InputStream;
import java.lang.ref.WeakReference;
import java.util.List;
import java.util.Scanner;
import timber.log.Timber;
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.iconSize;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineWidth;
/**
* Use a mapboxMap matched GeoJSON route to show a marker travels along the route.
*/
public class MarkerFollowingRouteActivity extends AppCompatActivity {
private static final String TAG = "MarkerFollowingRoute";
private static final String DOT_SOURCE_ID = "dot-source-id";
private static final String LINE_SOURCE_ID = "line-source-id";
private int count = 0;
private MapView mapView;
private MapboxMap mapboxMap;
private Handler handler;
private Runnable runnable;
private GeoJsonSource dotGeoJsonSource;
private ValueAnimator markerIconAnimator;
private LatLng markerIconCurrentLocation;
private List<Point> routeCoordinateList;
@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_lab_marker_following_route);
// Initialize the mapboxMap view
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(MapboxMap mapboxMap) {
MarkerFollowingRouteActivity.this.mapboxMap = mapboxMap;
mapboxMap.setStyle(Style.LIGHT, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
new LoadGeoJson(MarkerFollowingRouteActivity.this).execute();
}
});
}
});
}
/**
* Add data to the map once the GeoJSON has been loaded
*
* @param featureCollection returned GeoJSON FeatureCollection from the async task
*/
private void initData(@NonNull FeatureCollection featureCollection) {
if (featureCollection.features() != null) {
LineString lineString = (LineString) featureCollection.features().get(0).geometry();
if (lineString != null) {
routeCoordinateList = lineString.coordinates();
if (mapboxMap != null) {
mapboxMap.getStyle(style -> {
initSources(style, featureCollection);
initSymbolLayer(style);
initDotLinePath(style);
initRunnable();
});
}
}
}
}
/**
* Set up the repeat logic for moving the icon along the route.
*/
private void initRunnable() {
// Animating the marker requires the use of both the ValueAnimator and a handler.
// The ValueAnimator is used to move the marker between the GeoJSON points, this is
// done linearly. The handler is used to move the marker along the GeoJSON points.
handler = new Handler();
runnable = new Runnable() {
@Override
public void run() {
// Check if we are at the end of the points list, if so we want to stop using
// the handler.
if ((routeCoordinateList.size() - 1 > count)) {
Point nextLocation = routeCoordinateList.get(count + 1);
if (markerIconAnimator != null && markerIconAnimator.isStarted()) {
markerIconCurrentLocation = (LatLng) markerIconAnimator.getAnimatedValue();
markerIconAnimator.cancel();
}
markerIconAnimator = ObjectAnimator
.ofObject(latLngEvaluator, count == 0 || markerIconCurrentLocation == null
? new LatLng(37.61501, -122.385374)
: markerIconCurrentLocation,
new LatLng(nextLocation.latitude(), nextLocation.longitude()))
.setDuration(300);
markerIconAnimator.setInterpolator(new LinearInterpolator());
markerIconAnimator.addUpdateListener(animatorUpdateListener);
markerIconAnimator.start();
// Keeping the current point count we are on.
count++;
// Once we finish we need to repeat the entire process by executing the
// handler again once the ValueAnimator is finished.
handler.postDelayed(this, 300);
}
}
};
handler.post(runnable);
}
/**
* Listener interface for when the ValueAnimator provides an updated value
*/
private final ValueAnimator.AnimatorUpdateListener animatorUpdateListener =
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
LatLng animatedPosition = (LatLng) valueAnimator.getAnimatedValue();
if (dotGeoJsonSource != null) {
dotGeoJsonSource.setGeoJson(Point.fromLngLat(
animatedPosition.getLongitude(), animatedPosition.getLatitude()));
}
}
};
/**
* Add various sources to the map.
*/
private void initSources(@NonNull Style loadedMapStyle, @NonNull FeatureCollection featureCollection) {
dotGeoJsonSource = new GeoJsonSource(DOT_SOURCE_ID, featureCollection);
loadedMapStyle.addSource(dotGeoJsonSource);
loadedMapStyle.addSource(new GeoJsonSource(LINE_SOURCE_ID, featureCollection));
}
/**
* Add the marker icon SymbolLayer.
*/
private void initSymbolLayer(@NonNull Style loadedMapStyle) {
loadedMapStyle.addImage("moving-pink-dot", BitmapUtils.getBitmapFromDrawable(
getResources().getDrawable(R.drawable.pink_dot)));
loadedMapStyle.addLayer(new SymbolLayer("symbol-layer-id", DOT_SOURCE_ID).withProperties(
iconImage("moving-pink-dot"),
iconSize(1f),
iconIgnorePlacement(true),
iconAllowOverlap(true)
));
}
/**
* Add the LineLayer for the marker icon's travel route.
*/
private void initDotLinePath(@NonNull Style loadedMapStyle) {
loadedMapStyle.addLayer(new LineLayer("line-layer-id", LINE_SOURCE_ID).withProperties(
lineColor(Color.parseColor("#F13C6E")),
lineWidth(4f)
));
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
// When the activity is resumed we restart the marker animating.
if (handler != null && runnable != null) {
handler.post(runnable);
}
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
// Check if the marker is currently animating and if so, we pause the animation so we aren't
// using resources when the activities not in view.
if (handler != null && runnable != null) {
handler.removeCallbacksAndMessages(null);
}
if (markerIconAnimator != null) {
markerIconAnimator.cancel();
}
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
/**
* We want to load in the GeoJSON file asynchronous so the UI thread isn't handling the file
* loading. The GeoJSON file we are using is stored in the assets folder, you could also get
* this information from the Mapbox mapboxMap matching API during runtime.
*/
private static class LoadGeoJson extends AsyncTask<Void, Void, FeatureCollection> {
private WeakReference<MarkerFollowingRouteActivity> weakReference;
LoadGeoJson(MarkerFollowingRouteActivity activity) {
this.weakReference = new WeakReference<>(activity);
}
@Override
protected FeatureCollection doInBackground(Void... voids) {
try {
MarkerFollowingRouteActivity activity = weakReference.get();
if (activity != null) {
InputStream inputStream = activity.getAssets().open("matched_route.geojson");
return FeatureCollection.fromJson(convertStreamToString(inputStream));
}
} catch (Exception exception) {
Timber.e(exception.toString());
}
return null;
}
static String convertStreamToString(InputStream is) {
Scanner scanner = new Scanner(is).useDelimiter("\\A");
return scanner.hasNext() ? scanner.next() : "";
}
@Override
protected void onPostExecute(@Nullable FeatureCollection featureCollection) {
super.onPostExecute(featureCollection);
MarkerFollowingRouteActivity activity = weakReference.get();
if (activity != null && featureCollection != null) {
activity.initData(featureCollection);
}
}
}
/**
* Method is used to interpolate the SymbolLayer icon animation.
*/
private static final TypeEvaluator<LatLng> latLngEvaluator = new TypeEvaluator<LatLng>() {
private final LatLng latLng = new LatLng();
@Override
public LatLng evaluate(float fraction, LatLng startValue, LatLng endValue) {
latLng.setLatitude(startValue.getLatitude()
+ ((endValue.getLatitude() - startValue.getLatitude()) * fraction));
latLng.setLongitude(startValue.getLongitude()
+ ((endValue.getLongitude() - startValue.getLongitude()) * fraction));
return latLng;
}
};
}
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