Mobile map (search and route)

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QML

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Sample viewer app

Display maps and use locators to enable search and routing offline using a Mobile Map Package.

screenshot

Use case

Mobile map packages make it easy to transmit and store the necessary components for an offline map experience including: transportation networks (for routing/navigation), locators (address search, forward and reverse geocoding), and maps.

A field worker might download a mobile map package to support their operations while working offline.

How to use the sample

A list of maps from a mobile map package will be displayed. If the map contains transportation networks, the list item will have a navigation icon. Click on a map in the list to open it. If a locator task is available, click on the map to place a point. Click it again to reverse geocode the location's address. If transportation networks are available, click the route icon in the top right corner a route will be calculated between geocode locations.

How it works

Create a MobileMapPackage passing in the path to the constructor.
Get a list model of maps inside the package using the maps property.
If the package has a locator, access it using the LocatorTask property.
To see if a map contains transportation networks, check each map's TransportationNetworks property.

Relevant API

GeocodeResult
MobileMapPackage
ReverseGeocodeParameters
Route
RouteParameters
RouteResult
RouteTask
TransportationNetworkDataset

Offline data

Read more about how to set up the sample's offline data here.

Link	Local Location
Yellowstone mmpk File	`<userhome>`/ArcGIS/Runtime/Data/mmpk/Yellowstone.mmpk
SanFrancisco mmpk File	`<userhome>`/ArcGIS/Runtime/Data/mmpk/SanFrancisco.mmpk

Sample Code

MobileMap_SearchAndRoute.cpp

MobileMap_SearchAndRoute.h

MobileMap_SearchAndRoute.qml

Use dark colors for code blocksCopy
// [WriteFile Name=MobileMap_SearchAndRoute, Category=Maps]
// [Legal]
// Copyright 2016 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.
// [Legal]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

#include "MobileMap_SearchAndRoute.h"

#include "Map.h"
#include "Stop.h"
#include "Graphic.h"
#include "RouteTask.h"
#include "TextSymbol.h"
#include "LocatorTask.h"
#include "RouteResult.h"
#include "MapQuickView.h"
#include "GeocodeResult.h"
#include "SimpleRenderer.h"
#include "GraphicsOverlay.h"
#include "RouteParameters.h"
#include "SimpleLineSymbol.h"
#include "MobileMapPackage.h"
#include "PictureMarkerSymbol.h"
#include "ReverseGeocodeParameters.h"

#include <QDir>
#include <QFileInfoList>
#include <QFile>
#include <QtCore/qglobal.h>

#ifdef Q_OS_IOS
#include <QStandardPaths>
#endif // Q_OS_IOS

using namespace Esri::ArcGISRuntime;

// helper method to get cross platform data path
namespace
{
QString defaultDataPath()
{
  QString dataPath;

#ifdef Q_OS_ANDROID
  dataPath = "/sdcard";
#elif defined Q_OS_IOS
  dataPath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
#else
  dataPath = QDir::homePath();
#endif

  return dataPath;
}
} // namespace

MobileMap_SearchAndRoute::MobileMap_SearchAndRoute(QQuickItem* parent):
  QQuickItem(parent),
  m_selectedMmpkIndex(0),
  m_canRoute(false),
  m_canClear(false),
  m_isGeocodeInProgress(false),
  m_dataPath(defaultDataPath() + "/ArcGIS/Runtime/Data/mmpk"),
  m_fileInfoList(QDir(m_dataPath).entryInfoList())
{
}

MobileMap_SearchAndRoute::~MobileMap_SearchAndRoute() = default;

void MobileMap_SearchAndRoute::init()
{
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<MobileMap_SearchAndRoute>("Esri.Samples", 1, 0, "MobileMap_SearchAndRouteSample");
  qmlRegisterUncreatableType<CalloutData>("Esri.Samples", 1, 0, "CalloutData", "CalloutData is an uncreatable type");
}

void MobileMap_SearchAndRoute::componentComplete()
{
  QQuickItem::componentComplete();

  // find QML MapView component
  m_mapView = findChild<MapQuickView*>("mapView");
  m_mapView->setWrapAroundMode(WrapAroundMode::Disabled);

  // initialize Callout
  m_mapView->calloutData()->setTitle("Address");

  // set reverse geocoding parameters
  m_reverseGeocodeParameters.setMaxResults(1);

  // identify and create MobileMapPackages using mmpk files in datapath
  createMobileMapPackages(0);

  // create graphics overlays to visually display geocoding and routing results
  m_stopsGraphicsOverlay = new GraphicsOverlay(this);
  m_routeGraphicsOverlay = new GraphicsOverlay(this);
  m_routeGraphicsOverlay->setRenderer(new SimpleRenderer(new SimpleLineSymbol(SimpleLineSymbolStyle::Solid, QColor("#2196F3"), 4, this), this));

  m_mapView->graphicsOverlays()->append(m_routeGraphicsOverlay);
  m_mapView->graphicsOverlays()->append(m_stopsGraphicsOverlay);

  // create a pin symbol
  m_bluePinSymbol = new PictureMarkerSymbol(QUrl("qrc:/Samples/Maps/MobileMap_SearchAndRoute/bluePinSymbol.png"), this);
  m_bluePinSymbol->setHeight(36);
  m_bluePinSymbol->setWidth(36);
  m_bluePinSymbol->setOffsetY(m_bluePinSymbol->height() / 2);

  connectSignals();
}

void MobileMap_SearchAndRoute::createMobileMapPackages(int index)
{
  if (index < m_fileInfoList.length())
  {
    // check if file is a .mmpk file
    if (m_fileInfoList[index].completeSuffix() == "mmpk")
    {
      // create a new MobileMapPackage
      MobileMapPackage* mobileMapPackage = new MobileMapPackage(m_fileInfoList[index].absoluteFilePath(), this);

      // once MMPK is finished loading, add it and its information to lists
      connect(mobileMapPackage, &MobileMapPackage::doneLoading, this, [mobileMapPackage, this](Error error)
      {
        if (error.isEmpty())
        {
          // QList of MobileMapPackages
          m_mobileMapPackages.append(mobileMapPackage);

          // QStringList of MobileMapPackage names. Used as a ListModel in QML
          m_mobileMapPackageList << mobileMapPackage->item()->title();
          emit mmpkListChanged();
        }
      });

      // load the new MMPK
      mobileMapPackage->load();
    }

    createMobileMapPackages(++index);
  }
  else
    return;
}

void MobileMap_SearchAndRoute::connectSignals()
{
  connect(m_mapView, &MapQuickView::mouseClicked, this, [this](QMouseEvent& mouseEvent)
  {
    if (m_currentLocatorTask)
    {
      m_clickedPoint = Point(m_mapView->screenToLocation(mouseEvent.x(), mouseEvent.y()));

      // determine if user clicked on a graphic
      m_mapView->identifyGraphicsOverlay(m_stopsGraphicsOverlay, mouseEvent.x(), mouseEvent.y(), 5, false, 2);
    }
  });

  connect(m_mapView, &MapQuickView::identifyGraphicsOverlayCompleted, this, [this](QUuid, IdentifyGraphicsOverlayResult* identifyResult)
  {
    if (!identifyResult)
      return;

    // get graphics list
    QList<Graphic*> graphics = identifyResult->graphics();
    if (graphics.count() > 0)
    {
      // use the blue pin graphic instead of text graphic to as calloutData's geoElement
      Graphic* graphic = graphics[0];
      if (graphic->symbol()->symbolType() != SymbolType::PictureMarkerSymbol && graphics.count() > 1)
        graphic = graphics[1];

      m_mapView->calloutData()->setGeoElement(graphic);
      m_mapView->calloutData()->setDetail(graphic->attributes()->attributeValue("AddressLabel").toString());
      m_mapView->calloutData()->setVisible(true);
    }

    // if clicked a point with no graphic on it, reverse geocode
    else
    {
      m_currentLocatorTask->reverseGeocodeWithParameters(m_clickedPoint, m_reverseGeocodeParameters);
      m_isGeocodeInProgress = true;
      emit isGeocodeInProgressChanged();
    }
  });
}

void MobileMap_SearchAndRoute::resetMapView()
{
  // dismiss mapView controls
  m_canClear = false;
  emit canClearChanged();
  m_canRoute = false;
  emit canRouteChanged();

  // dimiss callout
  m_mapView->calloutData()->setVisible(false);

  // clear the graphics overlays and stops
  m_stopsGraphicsOverlay->graphics()->clear();
  if (m_stopGraphicParent)
  {
    delete m_stopGraphicParent;
    m_stopGraphicParent = nullptr;
  }
  m_routeGraphicsOverlay->graphics()->clear();
  if (m_routeGraphicParent)
  {
    delete m_routeGraphicParent;
    m_routeGraphicParent = nullptr;
  }
  m_stops.clear();
}

void MobileMap_SearchAndRoute::createMapList(int index)
{
  m_mapList.clear();
  m_selectedMmpkIndex = index;

  int counter = 1;

  const auto maps = m_mobileMapPackages[index]->maps();
  for (const Map* map : maps)
  {
    QVariantMap mapList;
    mapList["name"] = map->item()->title() + " " + QString::number(counter);
    mapList["geocoding"] = m_mobileMapPackages[index]->locatorTask() != nullptr;
    mapList["routing"] = map->transportationNetworks().count() > 0;

    m_mapList << mapList;
    ++counter;
  }

  emit mapListChanged();
}

void MobileMap_SearchAndRoute::selectMap(int index)
{
  resetMapView();

  // set the locatorTask
  //! [MobileMap_SearchAndRoute create LocatorTask]
  m_currentLocatorTask = m_mobileMapPackages[m_selectedMmpkIndex]->locatorTask();
  //! [MobileMap_SearchAndRoute create LocatorTask]

  // set the MapView
  m_mapView->setMap(m_mobileMapPackages[m_selectedMmpkIndex]->maps().at(index));

  if (m_currentLocatorTask)
  {
    // prevent connecting same signal to multiple slots
    m_currentLocatorTask->disconnect();

    connect(m_currentLocatorTask, &LocatorTask::geocodeCompleted, this, [this](QUuid, const QList<GeocodeResult>& geocodeResults)
    {
      // make busy indicator invisible
      m_isGeocodeInProgress = false;
      emit isGeocodeInProgressChanged();

      if (geocodeResults.count() > 0)
      {
        // create parent for the graphic
        if (!m_stopGraphicParent)
          m_stopGraphicParent = new QObject(this);

        // create a blue pin graphic to display location
        Graphic* bluePinGraphic = new Graphic(geocodeResults[0].displayLocation(), m_bluePinSymbol, m_stopGraphicParent);
        bluePinGraphic->attributes()->insertAttribute("AddressLabel", geocodeResults[0].label());

        m_stopsGraphicsOverlay->graphics()->append(bluePinGraphic);

        // make clear graphics overlay button visible
        m_canClear = true;
        emit canClearChanged();

        // if routing is enabled in map, set up the Stops
        if (m_currentRouteTask)
        {
          // create a stop based on added graphic
          m_stops << Stop(bluePinGraphic->geometry());

          // create a Text Symbol to display stop number
          TextSymbol* textSymbol = new TextSymbol(m_stopGraphicParent);
          textSymbol->setText(QString::number(m_stops.count()));
          textSymbol->setColor(QColor("white"));
          textSymbol->setSize(18);
          textSymbol->setOffsetY(m_bluePinSymbol->height() / 2);

          // create a Graphic using the textSymbol
          Graphic* stopNumberGraphic = new Graphic(bluePinGraphic->geometry(), textSymbol, m_stopGraphicParent);
          stopNumberGraphic->setZIndex(bluePinGraphic->zIndex() + 1);
          m_stopsGraphicsOverlay->graphics()->append(stopNumberGraphic);

          if (m_stops.count() > 1)
          {
            m_canRoute = true;
            emit canRouteChanged();
          }
        }
      }
    });
  }

  // create a RouteTask with selected map's transportation network if available
  if (m_mobileMapPackages[m_selectedMmpkIndex]->maps().at(index)->transportationNetworks().count() > 0)
  {
    m_currentRouteTask = new RouteTask(m_mobileMapPackages[m_selectedMmpkIndex]->maps().at(index)->transportationNetworks().at(0), this);
    m_currentRouteTask->load();

    // create default parameters after the RouteTask is loaded
    connect(m_currentRouteTask, &RouteTask::loadStatusChanged, this, [this](LoadStatus loadStatus)
    {
      if (loadStatus == LoadStatus::Loaded)
        m_currentRouteTask->createDefaultParameters();
    });

    // store the created route parameters
    connect(m_currentRouteTask, &RouteTask::createDefaultParametersCompleted, this, [this](QUuid, RouteParameters routeParameters)
    {
      m_currentRouteParameters = routeParameters;
    });

    // create a graphic using the routeResult
    connect(m_currentRouteTask, &RouteTask::solveRouteCompleted, this, [this](QUuid, RouteResult routeResult)
    {
      if (!m_routeGraphicParent)
        m_routeGraphicParent = new QObject(this);

      if (!routeResult.isEmpty())
      {
        const auto routes = routeResult.routes();
        Graphic* routeGraphic = new Graphic(routes[0].routeGeometry(), m_routeGraphicParent);
        m_routeGraphicsOverlay->graphics()->append(routeGraphic);
      }
    });
  }
  else
    m_currentRouteTask = nullptr;
}

void MobileMap_SearchAndRoute::solveRoute()
{
  // clear previously displayed routes
  m_routeGraphicsOverlay->graphics()->clear();
  if (m_routeGraphicParent)
  {
    delete m_routeGraphicParent;
    m_routeGraphicParent = nullptr;
  }

  // set stops and solve route
  m_currentRouteParameters.setStops(m_stops);
  m_currentRouteTask->solveRoute(m_currentRouteParameters);
}

QStringList MobileMap_SearchAndRoute::mmpkList() const
{
  return m_mobileMapPackageList;
}

QVariantList MobileMap_SearchAndRoute::mapList() const
{
  return m_mapList;
}

bool MobileMap_SearchAndRoute::isGeocodeInProgress() const
{
  return m_isGeocodeInProgress;
}

bool MobileMap_SearchAndRoute::canRoute() const
{
  return m_canRoute;
}

bool MobileMap_SearchAndRoute::canClear() const
{
  return m_canClear;
}