Location and API Maps in Windows Phone 8

LOCATION AND MAPS API
IN WINDOWS PHONE 8
SPECIAL GUESTS: THE NOKIA HERE® LAUNCHERS
Windows Phone Day
November 2013 - Catania
Ing. Antonio Pelleriti
Chief Software Architect @ Dynamicode
follow me: @zetanove
www.antoniopelleriti.it

GRAZIE
© 2013 Nokia. All rights reserved.
© 2013 Microsoft. All rights reserved.

AGENDA
• Geo Location
• Background tracking
• Map control
• Offline maps
• Geocoding/Reverse geocoding
• Route calculation and display
• Nokia HERE Launchers

GEOLOCATION

GEO LOCATION SENSING TECHNOLOGIES
• A-GPS
• Wi-Fi triangulation
• Cell Tower triangulation
accuracy
Power
consumptiom

GEOLOCATION ARCHITECTURE
Managed layer:
Provides .NET API (Pinvoke
not allowed in Windows
Phone)
Native layer:
Communicates with hw layer to
determine location of device
Hardware layer:
Provides location information
Managed Code
Native Layer
GPS WIFI
Cellular
networks

LOCATION API
• In Windows phone 7: GeoCoordinateWatcher  now deprecated
• In Windows phone 8: Geolocator
• Obtain one shot position:
• Geoposition GetGeopositionAsync
• Continuous location tracking
• event PositionChanged
• DesiredAccuracy, DesiredAccuracyInMeters, MovementThreshold
• event StatusChanged
• Disabled, Initializing, NoData, NotAvailable, NotInitialized, Ready
To enable location features: add ID_CAP_LOCATION in WMAppManifest.xml
Certification Requirement: check for user consent to using location api

BACKGROUND TRACKING (1/2)
• WMAppManifest.xml
<DefaultTask Name="_default" NavigationPage="MainPage.xaml">
<BackgroundExecution>
<ExecutionType Name="LocationTracking" />
</BackgroundExecution>
</DefaultTask>
• App.xaml
<shell:PhoneApplicationService …
Activated="Application_Activated"
RunningInBackground="Application_RunningInBackground"/>
Setting app for background tracking

BACKGROUND TRACKING (2/2)
• App.xaml.cs
private void Application_RunningInBackground(object sender,
RunningInBackgroundEventArgs args)
{
RunningInBackground = true;
// Suspend all unnecessary processing such as UI updates
}
private void Application_Activated (object sender, ActivatedEventArgs args)
{
RunningInBackground = false;
}
Setting app for background tracking

TESTING GEOLOCATION WITH EMULATOR

GEOLOCATION
DEMO

MAP CONTROL

MAP CONTROL
• Bing map control now deprecated (only for upgrading)
• Map Control
• Content: markers, overlays, polylines, polygons, route
• Settings: color, map type, pedestrian, landmarks, heading, pitch, zoom
• Features: geocoding, reverse geocoding, routing
• Capability ID_CAP_MAP in WMAppManifest.xml
• Reference: Microsoft.Phone.Maps.Controls
• Obtain API Keys from Dev Center

MAPS API KEY

SET MAPS API KEY
Set the ApplicationID and AuthenticationToken
private void map_Loaded(object sender, RoutedEventArgs e)
{
MapsSettings.ApplicationContext.ApplicationId = "id";
MapsSettings.ApplicationContext.AuthenticationToken = "token";
}

MAP CONTROL MEMBERS
• GeoCoordinate Center (GeoCoordinate !=Windows.Devices.Geolocation.Geocoordinate)
• ZoomLevel (1..20)
• LandmarksEnabled
• PedestrianFeaturesEnabled
• CartographicMode
• Road, Aerial, Hybrid, Terrain
• ColorMap
• Light/Dark
• Heading (0-360)
• Pitch (0-75)
• SetView and animations in C#
• MyMap.SetView(MyCoordinate, 16, MapAnimationKind.Parabolic);

MAPS BUILT-IN TASKS
Maps task
Launches the built-in Maps app and optionally marks a location.
Maps directions task
Launches the built-in Maps app and displays directions.
MapDownloader task
Downloads maps for offline use.
MapDownloaderTask mapDownloaderTask = new MapDownloaderTask();
mapDownloaderTask.Show();
MapUpdater task
Checks for updates for offline maps that the user has previously downloaded

MAP OVERLAY
MapOverlay overlay = new MapOverlay
{
GeoCoordinate = myMap.Center,
Content = new Ellipse
{
Fill = new SolidColorBrush(Colors.Red),
Width = 40,
Height = 40
}
};
MapLayer layer = new MapLayer();
layer.Add(overlay);
myMap.Layers.Add(layer);

GEOCODING/ROUTE CALCULATION
• GeocodeQuery: converts a street address or place to a GeoCoordinate
• RouteQuery: finds the shortest path between two GeoCoordinate, with any number of
waypoints in between and using a TravelMode (walking, driving)
• ReverseGeocodeQuery: obtains address or place informations from a GeoCoordinate:
Continent, country, state, province, city, address, housenumber, building, postalcode, …

MAP DEMO

HERE
APPLICATIONS

NOKIA HERE APPLICATIONS
• HERE Maps
• HERE Drive
• HERE Transit
• HERE City Lens
They works together and with launchers
you can use their features in your code!

HERE LAUNCHERS API

HERE LAUNCHERS
The services provided by the HERE applications can be used in two ways:
• HERE Launchers API (Tasks)
• https://github.com/nokia-developer/here-launchers
• Uri Schemes implemented in HERE applications.

HERE LAUNCHERS API
Launch HERE Maps to: Launch HERE Drive to: Launch HERE Transit to:
•Show route from user's current
location (default) or selected origin
to a destination.
•Search for places with a text
string.
•Explore places by categories.
•Show map of a selected location
with desired zoom level.
•Show place by ID or location on a
map.
•Provide drive guidance from user's
current location to a specific
destination.
•Show journeys from user's current
location (default) or selected origin
to a destination, either using
current time for departure (default)
or with desired departure or arrival
times.
using Nokia.Phone.HereLaunchers;
…
DirectionsRouteDestinationTask routeTo = new DirectionsRouteDestinationTask();
routeTo.Destination = new GeoCoordinate(60.35, 24.60);
routeTo.Mode = RouteMode.Car;
routeTo.Show();

URI SCHEME PROTOCOL FOR HERE APPS
Currently 5 URI schemes.
directions : for routing paths.
explore-maps : for exploring map and map services.
guidance-drive : for drive navigation.
guidance-walk : for walk navigation.
places : for showing places.
public-transit : for public transit related use cases.
Example: directions://v2.0/route/destination/?latlon=60.35,24.60&mode=car

http://developer.nokia.com/Resources/Library
/Lumia/#!maps-and-navigation/here-
launchers.html
https://github.com/nokia-developer/here-launchers
HERE LAUNCHERS
PROJECTS

Grazie!

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