Symbol layer icons | Maps SDK v9 | Android Docs

A newer version of the Maps SDK is available

This page uses v9.7.1 of the Mapbox Maps SDK. A newer version of the SDK is available. Learn about the latest version, v11.3.0, in the Maps SDK documentation.

Note

This example is a part of the Mapbox Android Demo app. You can find the values for all referenced resources in the res directory. For example, see res/values/activity_strings.xml for R.string.* references used in this example.

activity_style_basic_symbol_layer

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<?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.styles.BasicSymbolLayerActivity">

    <com.mapbox.mapboxsdk.maps.MapView
        android:id="@+id/mapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        mapbox:mapbox_cameraTargetLat="-32.557013"
        mapbox:mapbox_cameraTargetLng="-56.149056"
        mapbox:mapbox_cameraZoom="5.526846"/>

</FrameLayout>

BasicSymbolLayerActivity.java

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package com.mapbox.mapboxandroiddemo.examples.styles;

import android.graphics.BitmapFactory;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import com.mapbox.geojson.Feature;
import com.mapbox.geojson.FeatureCollection;
import com.mapbox.geojson.Point;
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
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.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;

import java.util.ArrayList;
import java.util.List;

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;

/**
 * Display {@link SymbolLayer} icons on the map.
 */
public class BasicSymbolLayerActivity extends AppCompatActivity implements
  OnMapReadyCallback {

  private static final String SOURCE_ID = "SOURCE_ID";
  private static final String ICON_ID = "ICON_ID";
  private static final String LAYER_ID = "LAYER_ID";
  private MapView mapView;

  @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_style_basic_symbol_layer);

    mapView = findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(this);
  }

  @Override
  public void onMapReady(@NonNull final MapboxMap mapboxMap) {

    List<Feature> symbolLayerIconFeatureList = new ArrayList<>();
    symbolLayerIconFeatureList.add(Feature.fromGeometry(
      Point.fromLngLat(-57.225365, -33.213144)));
    symbolLayerIconFeatureList.add(Feature.fromGeometry(
      Point.fromLngLat(-54.14164, -33.981818)));
    symbolLayerIconFeatureList.add(Feature.fromGeometry(
      Point.fromLngLat(-56.990533, -30.583266)));

    mapboxMap.setStyle(new Style.Builder().fromUri("mapbox://styles/mapbox/cjf4m44iw0uza2spb3q0a7s41")

      // Add the SymbolLayer icon image to the map style
      .withImage(ICON_ID, BitmapFactory.decodeResource(
        BasicSymbolLayerActivity.this.getResources(), R.drawable.mapbox_marker_icon_default))

      // Adding a GeoJson source for the SymbolLayer icons.
      .withSource(new GeoJsonSource(SOURCE_ID,
        FeatureCollection.fromFeatures(symbolLayerIconFeatureList)))

      // Adding the actual SymbolLayer to the map style. An offset is added that the bottom of the red
      // marker icon gets fixed to the coordinate, rather than the middle of the icon being fixed to
      // the coordinate point. This is offset is not always needed and is dependent on the image
      // that you use for the SymbolLayer icon.
      .withLayer(new SymbolLayer(LAYER_ID, SOURCE_ID)
        .withProperties(
            iconImage(ICON_ID),
            iconAllowOverlap(true),
            iconIgnorePlacement(true)
        )
      ), new Style.OnStyleLoaded() {
        @Override
        public void onStyleLoaded(@NonNull Style style) {

          // Map is set up and the style has loaded. Now you can add additional data or make other map adjustments.


        }
        });
  }

  @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
  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);
  }
}