Find place

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Sample viewer app

Find places of interest near a location or within a specific area.

Image of find place

Use case

When getting directions or looking for nearby places, users may only know what the place has ("food"), the type of place ("gym"), or the generic place name ("Starbucks"), rather than the specific address. You can get suggestions and locations for these places of interest (POIs) using a natural language query. Additionally, you can filter the results to a specific area.

How to use the sample

Choose a type of place in the first field and an area to search within in the second field. Tap the Search button to show the results of the query on the map. Tap on a result pin to show its name and address. If you pan away from the result area, a "Redo search in this area" button will appear. Tap it to query again for the currently viewed area on the map.

How it works

  1. Create a LocatorTask using a URL to a locator service.
  2. Find the location for an address (or city name) to build an envelope to search within:

    • Create GeocodeParameters.
    • Add return fields to the parameters' resultAttributeNames collection. Only add a single "*" option to return all fields.
    • Call locatorTask.geocodeAsync(locationQueryString, geocodeParameters) to get a list of GeocodeResults.
    • Use the displayLocation from each of the results to build an Envelope to view.
  3. Get place of interest (POI) suggestions based on a place name query:

    • Create SuggestParameters.
    • Add "POI" to the parameters' categories collection.
    • Call locatorTask.suggestAsync(placeQueryString, suggestParameters) to get a list of SuggestResults.
    • The SuggestResult will have a label to display in the search suggestions list.
  4. Use one of the suggestions or a user-written query to find the locations of POIs:

    • Create GeocodeParameters.
    • Set the parameters' searchArea to the envelope.
    • Call locatorTask.geocodeAsync(suggestionLabelOrPlaceQueryString, geocodeParameters) to get a list of GeocodeResults.
    • Display the places of interest using the results' displayLocations.

Relevant API

  • GeocodeParameters
  • GeocodeResult
  • LocatorTask
  • SuggestParameters
  • SuggestResult

Additional information

This sample uses the World Geocoding Service. For more information, see the Geocoding service help topic on the ArcGIS Developer website.

Tags

businesses, geocode, locations, locator, places of interest, POI, point of interest, search, suggestions

Sample Code

MainActivity.java
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
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/* Copyright 2017 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgisruntime.sample.findplace;

import android.Manifest;
import android.content.pm.PackageManager;
import android.database.MatrixCursor;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.SearchView;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.cursoradapter.widget.SimpleCursorAdapter;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.geometry.Envelope;
import com.esri.arcgisruntime.geometry.Geometry;
import com.esri.arcgisruntime.geometry.Multipoint;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.Callout;
import com.esri.arcgisruntime.mapping.view.DefaultMapViewOnTouchListener;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.IdentifyGraphicsOverlayResult;
import com.esri.arcgisruntime.mapping.view.LocationDisplay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.mapping.view.WrapAroundMode;
import com.esri.arcgisruntime.symbology.PictureMarkerSymbol;
import com.esri.arcgisruntime.tasks.geocode.GeocodeParameters;
import com.esri.arcgisruntime.tasks.geocode.GeocodeResult;
import com.esri.arcgisruntime.tasks.geocode.LocatorTask;
import com.esri.arcgisruntime.tasks.geocode.SuggestParameters;
import com.esri.arcgisruntime.tasks.geocode.SuggestResult;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;

public class MainActivity extends AppCompatActivity {

  private final String TAG = MainActivity.class.getSimpleName();

  private final String[] reqPermissions = { Manifest.permission.ACCESS_FINE_LOCATION,
      Manifest.permission.ACCESS_COARSE_LOCATION };

  private static final String COLUMN_NAME_ADDRESS = "address";
  private final String[] mColumnNames = { BaseColumns._ID, COLUMN_NAME_ADDRESS };

  private SearchView mPoiSearchView;
  private SearchView mProximitySearchView;

  private boolean mProximitySearchViewEmpty;
  private String mPoiAddress;

  private Point mPreferredSearchProximity;
  private MapView mMapView;
  private LocationDisplay mLocationDisplay;
  private LocatorTask mLocatorTask;
  private GraphicsOverlay mGraphicsOverlay;
  private SuggestParameters mPoiSuggestParameters;
  private GeocodeParameters mPoiGeocodeParameters;
  private SuggestParameters mProximitySuggestParameters;
  private GeocodeParameters mProximityGeocodeParameters;
  private PictureMarkerSymbol mPinSourceSymbol;
  private Geometry mCurrentExtentGeometry;
  private Callout mCallout;

  @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);

    // if permissions are not already granted, request permission from the user
    if (!(ContextCompat.checkSelfPermission(this, reqPermissions[0]) == PackageManager.PERMISSION_GRANTED
        && ContextCompat.checkSelfPermission(this, reqPermissions[1])
        == PackageManager.PERMISSION_GRANTED)) {
      int requestCode = 2;
      ActivityCompat.requestPermissions(this, reqPermissions, requestCode);
    }

    // setup the two SearchViews and show text hint
    mPoiSearchView = findViewById(R.id.poi_searchView);
    mPoiSearchView.setIconified(false);
    mPoiSearchView.setFocusable(false);
    mPoiSearchView.setQueryHint(getResources().getString(R.string.search_hint));
    mProximitySearchView = findViewById(R.id.proximity_searchView);
    mProximitySearchView.setIconified(false);
    mProximitySearchView.setFocusable(false);
    mProximitySearchView.setQueryHint(getResources().getString(R.string.proximity_search_hint));
    // setup redo search button
    Button redoSearchButton = findViewById(R.id.redo_search_button);
    // on redo button click call redoSearchInThisArea
    redoSearchButton.setOnClickListener(v -> redoSearchInThisArea());

    // define pin drawable
    BitmapDrawable pinDrawable = (BitmapDrawable) ContextCompat.getDrawable(this, R.drawable.pin);
    try {
      mPinSourceSymbol = PictureMarkerSymbol.createAsync(pinDrawable).get();
    } catch (InterruptedException | ExecutionException e) {
      String error = "Error creating PictureMarkerSymbol: " + e.getMessage();
      Log.e(TAG, error);
      Toast.makeText(this, error, Toast.LENGTH_LONG).show();
    }
    // set pin to half of native size
    mPinSourceSymbol.setWidth(19f);
    mPinSourceSymbol.setHeight(72f);

    // instantiate flag proximity search view flag
    mProximitySearchViewEmpty = true;

    // create a LocatorTask from an online service
    mLocatorTask = new LocatorTask("https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer");

    // inflate MapView from layout
    mMapView = findViewById(R.id.mapView);
    // disable map wraparound
    mMapView.setWrapAroundMode(WrapAroundMode.DISABLED);
    // create a map with the BasemapType topographic
    final ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);
    // set the map to be displayed in this view
    mMapView.setMap(map);
    // add listener to update extent when viewpoint has changed
    mMapView.addViewpointChangedListener(viewpointChangedEvent -> {
      // get the current map extent
      mCurrentExtentGeometry = mMapView.getCurrentViewpoint(Viewpoint.Type.BOUNDING_GEOMETRY).getTargetGeometry();
    });
    // add listener to handle callouts
    mMapView.setOnTouchListener(new DefaultMapViewOnTouchListener(this, mMapView) {
      @Override
      public boolean onSingleTapConfirmed(MotionEvent motionEvent) {
        showCallout(motionEvent);
        return true;
      }
    });
    // setup and start location display
    mLocationDisplay = mMapView.getLocationDisplay();
    mLocationDisplay.setAutoPanMode(LocationDisplay.AutoPanMode.RECENTER);
    mLocationDisplay.startAsync();
    // initially use device location to focus POI search
    final Point[] currentLocation = new Point[1];
    mLocationDisplay.addLocationChangedListener(locationChangedEvent -> {
      currentLocation[0] = mLocationDisplay.getMapLocation();
      // only update preferredSearchLocation if device has moved
      if (!currentLocation[0].equals(mLocationDisplay.getMapLocation(), 100) || mPreferredSearchProximity == null) {
        mPreferredSearchProximity = mLocationDisplay.getMapLocation();
      }
    });
    // define the graphics overlay
    mGraphicsOverlay = new GraphicsOverlay();

    setupPoi();
    setupProximity();
  }

  /**
   * Sets up the POI SearchView. Uses MatrixCursor to show suggestions to the user as the user inputs text.
   */
  private void setupPoi() {

    mPoiSuggestParameters = new SuggestParameters();
    // filter categories for POI
    mPoiSuggestParameters.getCategories().add("POI");
    mPoiGeocodeParameters = new GeocodeParameters();
    // get all attributes
    mPoiGeocodeParameters.getResultAttributeNames().add("*");
    mPoiSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {

      @Override
      public boolean onQueryTextSubmit(String address) {
        // if proximity SearchView text box is empty, use the device location
        if (mProximitySearchViewEmpty) {
          mPreferredSearchProximity = mLocationDisplay.getMapLocation();
          mProximitySearchView.setQuery("Using current location...", false);
        }
        // keep track of typed address
        mPoiAddress = address;
        // geocode typed address
        geoCodeTypedAddress(address);
        // clear focus from search views
        mPoiSearchView.clearFocus();
        mProximitySearchView.clearFocus();
        return true;
      }

      @Override
      public boolean onQueryTextChange(final String newText) {
        // as long as newText isn't empty, get suggestions from the locatorTask
        if (!newText.equals("")) {
          mPoiSuggestParameters.setSearchArea(mCurrentExtentGeometry);
          final ListenableFuture<List<SuggestResult>> suggestionsFuture = mLocatorTask
              .suggestAsync(newText, mPoiSuggestParameters);
          suggestionsFuture.addDoneListener(new Runnable() {

            @Override public void run() {
              try {
                // get the results of the async operation
                List<SuggestResult> suggestResults = suggestionsFuture.get();

                if (!suggestResults.isEmpty()) {
                  MatrixCursor suggestionsCursor = new MatrixCursor(mColumnNames);
                  int key = 0;
                  // add each poi_suggestion result to a new row
                  for (SuggestResult result : suggestResults) {
                    suggestionsCursor.addRow(new Object[] { key++, result.getLabel() });
                  }
                  // define SimpleCursorAdapter
                  String[] cols = { COLUMN_NAME_ADDRESS };
                  int[] to = { R.id.suggestion_address };
                  final SimpleCursorAdapter suggestionAdapter = new SimpleCursorAdapter(MainActivity.this,
                      R.layout.suggestion, suggestionsCursor, cols, to, 0);
                  mPoiSearchView.setSuggestionsAdapter(suggestionAdapter);
                  // handle a poi_suggestion being chosen
                  mPoiSearchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
                    @Override public boolean onSuggestionSelect(int position) {
                      return false;
                    }

                    @Override public boolean onSuggestionClick(int position) {
                      // get the selected row
                      MatrixCursor selectedRow = (MatrixCursor) suggestionAdapter.getItem(position);
                      // get the row's index
                      int selectedCursorIndex = selectedRow.getColumnIndex(COLUMN_NAME_ADDRESS);
                      // get the string from the row at index
                      mPoiAddress = selectedRow.getString(selectedCursorIndex);
                      mPoiSearchView.setQuery(mPoiAddress, true);
                      return true;
                    }
                  });
                } else {
                  mPoiAddress = newText;
                }
              } catch (Exception e) {
                Log.e(TAG, "Geocode suggestion error: " + e.getMessage());
              }
            }
          });
        }
        return true;
      }
    });
  }

  /**
   * Sets up the proximity SearchView. Uses MatrixCursor to show suggestions to the user as the user inputs text.
   */
  private void setupProximity() {

    mProximitySuggestParameters = new SuggestParameters();
    mProximitySuggestParameters.getCategories().add("Populated Place");
    mProximityGeocodeParameters = new GeocodeParameters();
    // get all attributes
    mProximityGeocodeParameters.getResultAttributeNames().add("*");
    mProximitySearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
      @Override public boolean onQueryTextSubmit(String address) {
        geoCodeTypedAddress(address);
        // clear focus from search views
        mPoiSearchView.clearFocus();
        mProximitySearchView.clearFocus();
        return true;
      }

      @Override public boolean onQueryTextChange(String newText) {
        // as long as newText isn't empty, get suggestions from the locatorTask
        if (!newText.equals("")) {
          mProximitySearchViewEmpty = false;
          final ListenableFuture<List<SuggestResult>> suggestionsFuture = mLocatorTask
              .suggestAsync(newText, mProximitySuggestParameters);
          suggestionsFuture.addDoneListener(() -> {
            try {
              // get the list of suggestions
              List<SuggestResult> suggestResults = suggestionsFuture.get();
              MatrixCursor suggestionsCursor = new MatrixCursor(mColumnNames);
              int key = 0;
              // add each SuggestResult to a new row
              for (SuggestResult result : suggestResults) {
                suggestionsCursor.addRow(new Object[] { key++, result.getLabel() });
              }
              // define SimpleCursorAdapter
              String[] cols = { COLUMN_NAME_ADDRESS };
              int[] to = { R.id.suggestion_address };
              final SimpleCursorAdapter suggestionAdapter = new SimpleCursorAdapter(MainActivity.this,
                  R.layout.suggestion, suggestionsCursor, cols, to, 0);
              mProximitySearchView.setSuggestionsAdapter(suggestionAdapter);
              mProximitySearchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
                @Override public boolean onSuggestionSelect(int position) {
                  return false;
                }

                @Override public boolean onSuggestionClick(int position) {
                  // get the selected row
                  MatrixCursor selectedRow = (MatrixCursor) suggestionAdapter.getItem(position);
                  // get the row's index
                  int selectedCursorIndex = selectedRow.getColumnIndex(COLUMN_NAME_ADDRESS);
                  // get the string from the row at index
                  final String address = selectedRow.getString(selectedCursorIndex);
                  mLocatorTask.addDoneLoadingListener(() -> {
                    if (mLocatorTask.getLoadStatus() == LoadStatus.LOADED) {
                      // geocode the selected address to get location of address
                      final ListenableFuture<List<GeocodeResult>> geocodeFuture = mLocatorTask
                          .geocodeAsync(address, mProximityGeocodeParameters);
                      geocodeFuture.addDoneListener(() -> {
                        try {
                          // Get the results of the async operation
                          List<GeocodeResult> geocodeResults = geocodeFuture.get();
                          if (!geocodeResults.isEmpty()) {
                            // use geocodeResult to focus search area
                            GeocodeResult geocodeResult = geocodeResults.get(0);
                            // update preferred search area to the geocode result
                            mPreferredSearchProximity = geocodeResult.getDisplayLocation();
                            mPoiGeocodeParameters.setSearchArea(mPreferredSearchProximity);
                            // set the address string to the SearchView, but don't submit as a query
                            mProximitySearchView.setQuery(address, false);
                            // call POI search query
                            mPoiSearchView.setQuery(mPoiAddress, true);
                            // clear focus from search views
                            mProximitySearchView.clearFocus();
                            mPoiSearchView.clearFocus();
                          } else {
                            Toast.makeText(getApplicationContext(),
                                getString(R.string.location_not_found) + address, Toast.LENGTH_LONG).show();
                          }
                        } catch (InterruptedException | ExecutionException e) {
                          Log.e(TAG, "Geocode error: " + e.getMessage());
                          Toast.makeText(getApplicationContext(), getString(R.string.geo_locate_error),
                              Toast.LENGTH_LONG).show();
                        }
                      });
                    }
                  });
                  return true;
                }
              });
            } catch (Exception e) {
              Log.e(TAG, "Geocode suggestion error: " + e.getMessage());
            }
          });
          // if search view is empty, set flag
        } else {
          mProximitySearchViewEmpty = true;
        }
        return true;
      }
    });
  }

  /**
   * Performs a search for the POI listed in the SearchView, using the MapView's current extent to inform the search.
   */
  private void redoSearchInThisArea() {
    // set center of current extent to preferred search proximity
    mPreferredSearchProximity = mCurrentExtentGeometry.getExtent().getCenter();
    mPoiGeocodeParameters.setSearchArea(mCurrentExtentGeometry);
    mProximitySearchView.setQuery(getString(R.string.searching_by_area), false);
    // use most recent POI address
    geoCodeTypedAddress(mPoiAddress);
  }

  /**
   * Identifies the Graphic at the tapped point. Gets attribute of that Graphic and assigns it to a Callout, which is
   * then displayed.
   *
   * @param motionEvent from onSingleTapConfirmed
   */
  private void showCallout(MotionEvent motionEvent) {
    // get the screen point
    android.graphics.Point screenPoint = new android.graphics.Point(Math.round(motionEvent.getX()),
        Math.round(motionEvent.getY()));
    // convert to map point
    final Point mapPoint = mMapView.screenToLocation(screenPoint);
    // from the graphics overlay, get graphics near the tapped location
    final ListenableFuture<IdentifyGraphicsOverlayResult> identifyResultsFuture = mMapView
        .identifyGraphicsOverlayAsync(mGraphicsOverlay, screenPoint, 10, false);
    identifyResultsFuture.addDoneListener(() -> {
      try {
        IdentifyGraphicsOverlayResult identifyGraphicsOverlayResult = identifyResultsFuture.get();
        List<Graphic> graphics = identifyGraphicsOverlayResult.getGraphics();
        // if a graphic has been identified
        if (!graphics.isEmpty()) {
          //get the first graphic identified
          Graphic identifiedGraphic = graphics.get(0);
          // create a TextView for the Callout
          TextView calloutContent = new TextView(getApplicationContext());
          calloutContent.setTextColor(Color.BLACK);
          // set the text of the Callout to graphic's attributes
          calloutContent.setText(identifiedGraphic.getAttributes().get("PlaceName") + "\n"
              + identifiedGraphic.getAttributes().get("StAddr"));
          // get Callout and set its options: animateCallout: true, recenterMap: false, animateRecenter: false
          mCallout = mMapView.getCallout();
          mCallout.setShowOptions(new Callout.ShowOptions(true, false, false));
          // set the leader position and show the callout
          mCallout.setLocation(identifiedGraphic.computeCalloutLocation(mapPoint, mMapView));
          mCallout.setContent(calloutContent);
          mCallout.show();
        } else {
          mCallout.dismiss();
        }
      } catch (Exception e) {
        Log.e(TAG, "Identify error: " + e.getMessage());
      }
    });
  }

  /**
   * Geocode an address passed in by the user.
   *
   * @param address read in from searchViews
   */
  private void geoCodeTypedAddress(final String address) {
    // check that address isn't null
    if (address != null) {
      // POI geocode parameters set from proximity SearchView or, if empty, device location
      mPoiGeocodeParameters.setPreferredSearchLocation(mPreferredSearchProximity);
      mPoiGeocodeParameters.setSearchArea(mPreferredSearchProximity);
      // Execute async task to find the address
      mLocatorTask.addDoneLoadingListener(() -> {
        if (mLocatorTask.getLoadStatus() == LoadStatus.LOADED) {
          // Call geocodeAsync passing in an address
          final ListenableFuture<List<GeocodeResult>> geocodeResultListenableFuture = mLocatorTask
              .geocodeAsync(address, mPoiGeocodeParameters);
          geocodeResultListenableFuture.addDoneListener(() -> {
            try {
              // Get the results of the async operation
              List<GeocodeResult> geocodeResults = geocodeResultListenableFuture.get();
              if (!geocodeResults.isEmpty()) {
                displaySearchResult(geocodeResults);
              } else {
                Toast.makeText(getApplicationContext(), getString(R.string.location_not_found) + address,
                    Toast.LENGTH_LONG).show();
              }
            } catch (InterruptedException | ExecutionException e) {
              Log.e(TAG, "Geocode error: " + e.getMessage());
              Toast.makeText(getApplicationContext(), getString(R.string.geo_locate_error), Toast.LENGTH_LONG)
                  .show();
            }
          });
        } else {
          Log.i(TAG, "Trying to reload locator task");
          mLocatorTask.retryLoadAsync();
        }
      });
      mLocatorTask.loadAsync();
    }
  }

  /**
   * Turns a list of GeocodeResults into Points and adds them to a GraphicOverlay which is then drawn on the map. The
   * points are added to a multipoint used to calculate a viewpoint.
   *
   * @param geocodeResults as a list
   */
  private void displaySearchResult(List<GeocodeResult> geocodeResults) {
    // dismiss any callout
    if (mMapView.getCallout() != null && mMapView.getCallout().isShowing()) {
      mMapView.getCallout().dismiss();
    }
    // clear map of existing graphics
    mMapView.getGraphicsOverlays().clear();
    mGraphicsOverlay.getGraphics().clear();
    // create a list of points from the geocode results
    List<Point> resultPoints = new ArrayList<>();
    for (GeocodeResult result : geocodeResults) {
      // create graphic object for resulting location
      Point resultPoint = result.getDisplayLocation();
      Graphic resultLocGraphic = new Graphic(resultPoint, result.getAttributes(), mPinSourceSymbol);
      // add graphic to location layer
      mGraphicsOverlay.getGraphics().add(resultLocGraphic);
      resultPoints.add(resultPoint);
    }
    // add result points to a Multipoint and get an envelope surrounding it
    Multipoint resultsMultipoint = new Multipoint(resultPoints);
    Envelope resultsEnvelope = resultsMultipoint.getExtent();
    // add a 25% buffer to the extent Envelope of result points
    Envelope resultsEnvelopeWithBuffer = new Envelope(resultsEnvelope.getCenter(), resultsEnvelope.getWidth() * 1.25,
        resultsEnvelope.getHeight() * 1.25);
    // zoom map to result over 3 seconds
    mMapView.setViewpointAsync(new Viewpoint(resultsEnvelopeWithBuffer), 3);
    // set the graphics overlay to the map
    mMapView.getGraphicsOverlays().add(mGraphicsOverlay);
  }

  @Override
  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    // if request is cancelled, the result arrays are empty
    if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
      mLocationDisplay.startAsync();
    } else {
      // if permission was denied, show toast to inform user what was chosen
      Toast.makeText(this, getResources().getString(R.string.location_permission_denied),
          Toast.LENGTH_SHORT).show();
    }
  }

  @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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