platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/CustomSpriteActivity.java


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package com.mapbox.mapboxsdk.testapp.activity.style;

import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;

import timber.log.Timber;

import android.view.MenuItem;
import android.view.View;

import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
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.style.layers.Layer;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.services.commons.geojson.Feature;
import com.mapbox.services.commons.geojson.FeatureCollection;
import com.mapbox.services.commons.geojson.Point;
import com.mapbox.services.commons.models.Position;

import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;

/**
 * Example to add a sprite image and use it in a Symbol Layer
 */
public class CustomSpriteActivity extends AppCompatActivity {
  private static final String CUSTOM_ICON = "custom-icon";

  private MapboxMap mapboxMap;
  private MapView mapView;
  private Layer layer;
  private GeoJsonSource source;


  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_sprite);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
      actionBar.setDisplayHomeAsUpEnabled(true);
      actionBar.setDisplayShowHomeEnabled(true);
    }

    mapView = (MapView) findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(new OnMapReadyCallback() {
      @Override
      public void onMapReady(@NonNull final MapboxMap map) {
        mapboxMap = map;
        final FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setColorFilter(ContextCompat.getColor(CustomSpriteActivity.this, R.color.primary));
        fab.setOnClickListener(new View.OnClickListener() {
          private Point point;

          @Override
          public void onClick(View view) {
            if (point == null) {
              Timber.i("First click -> Car");
              // Add an icon to reference later
              mapboxMap.addImage(CUSTOM_ICON, BitmapFactory.decodeResource(getResources(), R.drawable.ic_car_top));

              //Add a source with a geojson point
              point = Point.fromCoordinates(Position.fromCoordinates(13.400972d, 52.519003d));
              source = new GeoJsonSource(
                "point",
                FeatureCollection.fromFeatures(new Feature[] {Feature.fromGeometry(point)})
              );
              mapboxMap.addSource(source);

              //Add a symbol layer that references that point source
              layer = new SymbolLayer("layer", "point");
              layer.setProperties(
                //Set the id of the sprite to use
                iconImage(CUSTOM_ICON)
              );

              // lets add a circle below labels!
              mapboxMap.addLayer(layer, "waterway-label");

              fab.setImageResource(R.drawable.ic_directions_car_black_24dp);
            } else {
              //Update point
              point = Point.fromCoordinates(
                Position.fromCoordinates(point.getCoordinates().getLongitude() + 0.001,
                  point.getCoordinates().getLatitude() + 0.001)
              );
              source.setGeoJson(FeatureCollection.fromFeatures(new Feature[] {Feature.fromGeometry(point)}));

              //Move the camera as well
              mapboxMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(
                point.getCoordinates().getLatitude(), point.getCoordinates().getLongitude())));
            }
          }
        });
      }
    });
  }

  @Override
  protected void onStart() {
    super.onStart();
    mapView.onStart();
  }

  @Override
  protected void onResume() {
    super.onResume();
    mapView.onResume();
  }

  @Override
  protected void onPause() {
    super.onPause();
    mapView.onPause();
  }

  @Override
  protected void onStop() {
    super.onStop();
    mapView.onStop();
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    mapView.onSaveInstanceState(outState);
  }

  @Override
  public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case android.R.id.home:
        onBackPressed();
        return true;
      default:
        return super.onOptionsItemSelected(item);
    }
  }
}