Feature layer (feature service)

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Show features from an online feature service.

Image of feature layer feature service

Use case

Feature services are useful for sharing vector GIS data with clients so that individual features can be queried, displayed, and edited.

How to use the sample

Run the sample and view the feature service as an operational layer on top of the basemap. Zoom and pan around the map to see the features in greater detail.

How it works

  1. Create a ServiceFeatureTable from a URL.
  2. Create a feature layer from the service feature table with new FeatureLayer(serviceFeatureTable).
  3. Add the feature layer to your ArcGISMap using ArcGISMap.getOperationalLayers().add(FeatureLayer).

Relevant API

  • ArcGISMap
  • BasemapStyle
  • FeatureLayer
  • MapView
  • ServiceFeatureTable

Tags

feature table, layer, layers, service

Sample Code

MainActivity.java
                                                                                   
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/* Copyright 2016 ESRI
 *
 * All rights reserved under the copyright laws of the United States
 * and applicable international laws, treaties, and conventions.
 *
 * You may freely redistribute and use this sample code, with or
 * without modification, provided you include the original copyright
 * notice and use restrictions.
 *
 * See the Sample code usage restrictions document for further information.
 *
 */

package com.esri.arcgisruntime.sample.featurelayerfeatureservice;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.data.ServiceFeatureTable;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;

public class MainActivity extends AppCompatActivity {

  private MapView mMapView;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // authentication with an API key or named user is required to access basemaps and other
    // location services
    ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY);

    // inflate MapView from layout
    mMapView = findViewById(R.id.mapView);

    // create a map with the terrain with labels basemap
    ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TERRAIN);

    // create feature layer with its service feature table
    // create the service feature table
    ServiceFeatureTable serviceFeatureTable = new ServiceFeatureTable(
        getResources().getString(R.string.sample_service_url));

    // create the feature layer using the service feature table
    FeatureLayer featureLayer = new FeatureLayer(serviceFeatureTable);

    // add the layer to the map
    map.getOperationalLayers().add(featureLayer);

    // set the map to be displayed in the mapview
    mMapView.setMap(map);

    // set an initial viewpoint
    mMapView.setViewpoint(new Viewpoint(new Point(-13176752, 4090404, SpatialReferences.getWebMercator()), 500000));
  }

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

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

  @Override
  protected void onDestroy() {
    super.onDestroy();
    mMapView.dispose();
  }
}

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