This session will not teach you why we are on Earth, but it will teach you how to find out where we are on it. Looking for the user? Find the phone. Thanks to standard built-in Location Services and hybrid positioning hardware, every Windows Phone knows where it is. In this session, ActiveNick shows you how to build a truly “smart” phone application by adding Location Intelligence Services (LIS) to it. Using Microsoft Visual Studio, the Windows Phones SDK and other geospatial APIs from Nokia, Google and Bing Maps, you will learn how to locate the device in the world using the phone GPS and other Location Services, display maps and manipulate them with touch gestures, geocode addresses into lat/long pairs, and display the results on a map using pushpins, UI elements and more. We’ll discuss the various mapping technologies, SDKs and APIs in the GIS world and explore how Windows Phone apps can participate in geospatial circles. Location Intelligence is a natural extension of mobility: Come learn how it’s done.
Developing Windows Phone Apps with Maps and Location Services
1. Nick Landry
Microsoft Senior Technical Evangelist, NY Metro
Nokia Developer Ambassador & Champion
ext-nick.landry@nokia.com
@ActiveNick – www.AgeofMobility.com
#DVLUPDAY
Developing Windows Phone Apps
with Maps and Location Services
talk2me
Chicago – April 12, 2014
2. Who is ActiveNick?
• Senior Technical Evangelist – Microsoft, NY Metro Audience Team
• Nokia Developer Ambassador and Champion
• Former Microsoft MVP: 2005-2014 – Windows Phone Development
• Mobile Publisher – Big Bald Apps: http://www.bigbaldapps.com
• Speaker. Blogger. Author. Tweeter. Father. Gamer
• 20+ Years of Professional Experience
• Specialties:
• Mobile Development
• Location Intelligence & Geospatial Systems
• Data Visualization, HPC, Cloud
• Mobile Game Development
• Blog: www.AgeofMobility.com
• Twitter: @ActiveNick
2005-2014
3. MUSIC
WINDOWS PHONE USER EXPERIENCE HARDWARE DESIGN & ENGINEERING
IMAGING SENSORCORE
LUMIA DIFFERENTIATION
Get noticed from the crowd
LOCATION MUSICSENSORCORE
4. Agenda
Location and
Maps on
Windows Phone 8
Introducing the new Location API
and the new Maps Controls
Overview of the GIS World
Windows Phone Runtime Location API
How to Get the Phone’s Current Location
How to Continuously Track the Phone’s Location
How to Run Location-Tracking Apps in the Background
Getting Started with the New Map Control
Specifying Map Center and Zoom
Animating Map Display Using Map Views
6. What is GIS?
Maps
(Raster / Vector)
Aerial / Satellite
Imagery
Data Processing
Geocoding
Routing &
Directions
Spatial Data
(Capture, Storage,
Search)
Spatial Storage
& Search
Reporting &
Analytics
Location Services
7. Maps help you visualize critical business data
Business IntelligenceSupply Chain Customer Locations
70-80% of business data has a
geospatial component
Why GIS?
8. Why GIS + Mobile?
• Every company that has a web site needs a map of where their location is
• Better Imagery and New Perspectives
• Personalizing the Mapping Experience
• Going Mobile
• Mobile devices are location aware, generally smarter and more powerful
• Mobile devices are overtaking the PC
• The boundary between Personal Navigation Devices and Smartphones is blurring
• Social computing is inherently mobile: User location is almost always in play
• New Emerging Technologies and Techniques
• Geofencing, Background Location-Tracking, Location Based Advertisement, etc.
11. Cross-Platform Solution Design
Client Platforms
GIS Providers
Location Data in
the Cloud
Windows
Azure
Google
Maps
iOS Android
Nokia &
Bing Maps
Windows
12. Available Geospatial Services
Nominatim
Acceptable use Policy:
1 request/s
Single thread, single
machine, no scripts,
no bulk geocoding
Attribution required
No limit version run
by MapQuest
Courtesy Limits
1 request per second
per user
Google Maps API: 25K
requests/day
Geocoding API:
2,500/day quota
Places Search API:
100K/day quota
50K transactions/ day
for mobile
5 x 50 batch
geocoding / day
10K/30-days for
evaluation
No turn-by-turn
navigation allowed
All paid services
Free base maps,
demographic maps,
reference maps,
specialty maps
Free shape files
14. Location APIs on Windows Phone 8
• .NET Location API from Windows Phone OS 7.1 is still supported
• System.Device.Location.GeoCoordinateWatcher and related classes
• New Windows Phone Runtime location API
• Accessible from managed and native code
• Improved ability for one-shot location acquisition
• Improved capabilities for location tracking
• Convergent with Windows 8 location API
15. ID_CAP_LOCATION Capability
• You must include the ID_CAP_LOCATION capability in your app manifest
• If you forget, calls to location APIs throw an UnauthorizedAccessException
17. Controlling the Sources the Geolocation Service Uses
• You can’t!
• You can set the DesiredAccuracy property of the Geolocator object:
• PositionAccuracy.High – if you want the most accurate data available, but at the cost
of increased battery usage, network bandwidth and possibly monetary charges from
wireless network operators. Often this causes the GPS to be activated
• PositionAccuracy.Default – to optimize for power
• You can also set the DesiredAccuracyInMeters property to indicate to the Geolocation
service the desired accuracy of any results
• However, the Geolocation service determines the best location data to provide to
the application
18. How to Get the Phone’s Current Location
private async void OneShotLocation_Click(object sender, RoutedEventArgs e)
{
Geolocator geolocator = new Geolocator();
geolocator.DesiredAccuracyInMeters = 50;
try
{
Geoposition geoposition = await geolocator.GetGeopositionAsync(
maximumAge: TimeSpan.FromMinutes(5),
timeout: TimeSpan.FromSeconds(10) );
LatitudeTextBlock.Text = geoposition.Coordinate.Latitude.ToString("0.00");
LongitudeTextBlock.Text = geoposition.Coordinate.Longitude.ToString("0.00");
}
catch (UnauthorizedAccessException)
{
// the app does not have the right capability or the location master switch is off
StatusTextBlock.Text = "location is disabled in phone settings.";
}
}
19. User Consent
• Application certification requirements on user consent still the same as in 7.1
• If you are using location data just within your app, you do not need to ask explicitly for
user consent (although they give consent when they install your app)
• You only have to get user consent if you plan to make location data available to any other
service or other person:
2.7.4 If your application publishes or makes available location data obtained from the
Location Service API to any other service or other person (including advertising networks),
your application must implement a method to obtain opt-in consent. …
22. Location Tracking
• If your app only needs the user’s location at the current time,
use GetGeopositionAsync as already described
• Continuously tracking the user’s location drains the user’s
battery more and should only be used for apps that require it
23. private void TrackLocation_Click(object sender, RoutedEventArgs e)
{
if (!tracking) {
geolocator = new Geolocator();
geolocator.DesiredAccuracy = PositionAccuracy.High;
geolocator.MovementThreshold = 100; // The units are meters.
geolocator.StatusChanged += geolocator_StatusChanged;
geolocator.PositionChanged += geolocator_PositionChanged;
tracking = true;
}
else {
geolocator.PositionChanged -= geolocator_PositionChanged;
geolocator.StatusChanged -= geolocator_StatusChanged;
geolocator = null;
tracking = false;
}
}
How to Track Location
24. void geolocator_StatusChanged(Geolocator sender, StatusChangedEventArgs args)
{
string status = "";
switch (args.Status)
{
case PositionStatus.Disabled:
// the application does not have the right capability or the location master switch is off
status = "location is disabled in phone settings";
break;
case PositionStatus.Initializing:
// the geolocator started the tracking operation
status = "initializing";
break;
case PositionStatus.NoData:
// the location service was not able to acquire the location
status = "no data";
break;
Geolocator Status
25. void geolocator_StatusChanged(Geolocator sender, StatusChangedEventArgs args)
{
string status = "";
switch (args.Status)
{
case PositionStatus.Disabled:
// the application does not have the right capability or the location master switch is off
status = "location is disabled in phone settings";
break;
case PositionStatus.Initializing:
// the geolocator started the tracking operation
status = "initializing";
break;
case PositionStatus.NoData:
// the location service was not able to acquire the location
status = "no data";
break;
case PositionStatus.Ready:
Geolocator Status
28. Enable Location Tracking in the Background
• Normally, when your user navigates away from your app, it is made dormant and all
activity – including location tracking – is suspended
• In Windows Phone 8, a location-tracking app can continue to run in the background after
the user navigates away, as long as the app continues to actively track location
• This feature enables scenarios such as an app that provides turn-by-turn directions or a
run tracker
29. • Edit WMAppManifest.xml using the XML (Text) Editor
• Replace <DefaultTask> element as shown
Enable Background Execution
30. • In App.Xaml, register an event handler for the RunningInBackground event
• This event is raised when the user navigates away from your background execution-enabled app
while you are actively tracking location
• When this event is raised, your app should stop all tasks that are not related to location tracking,
including updates to the app’s UI
<Application.ApplicationLifetimeObjects>
<!--Required object that handles lifetime events for the application-->
<shell:PhoneApplicationService
Launching="Application_Launching" Closing="Application_Closing“
Activated="Application_Activated" Deactivated="Application_Deactivated“
RunningInBackground="Application_RunningInBackground"/>
</Application.ApplicationLifetimeObjects>
Register Event Handler for RunningInBackground Event
31. // Static variables global to application to support tracking
public static Geolocator Geolocator { get; set; }
public static bool RunningInBackground { get; set; }
// Code to execute when the application is activated (brought to foreground)
private void Application_Activated(object sender, ActivatedEventArgs e)
{
RunningInBackground = false;
}
// Code to execute when the application is deactivated and is tracking location
private void Application_RunningInBackground(object sender, RunningInBackgroundEventArgs e)
{
RunningInBackground = true;
// Suspend all unnecessary processing such as UI updates
}
Implement RunningInBackground Event Handler
32. void geolocator_PositionChanged(Geolocator sender, PositionChangedEventArgs args)
{
if (!App.RunningInBackground)
{
Dispatcher.BeginInvoke(() => {
LatitudeTextBlock.Text = args.Position.Coordinate.Latitude.ToString("0.00");
LongitudeTextBlock.Text = args.Position.Coordinate.Longitude.ToString("0.00"); });
}
else
{ // DEMO purposes only: Show toast if running in background
Microsoft.Phone.Shell.ShellToast toast = new Microsoft.Phone.Shell.ShellToast();
toast.Content = args.Position.Coordinate.Latitude.ToString("0.00");
toast.Title = "Location: ";
toast.NavigationUri = new Uri("/Page2.xaml", UriKind.Relative);
toast.Show();
}
}
Do Not Update UI When Running in the Background
Example
34. • As we have seen, Background Location Tracking apps continue to run in the background
• But if it is not actively tracking location when deactivated, it is made dormant as normal
• If the user launches *another* location tracking app and deactivates that, then your app will be
made dormant
• If the user launches a new instance of the app, if there is a dormant instance, that is reactivated instead
• Background Location Tracking apps get the Fast Application Resume behavior, which reactivates a
dormant application if the user launches a new copy
• The dormant instance of the app, including the history of visited app pages, is reactivated
• By default, the list of previously visited pages is cleared for these ‘Reset’ activations
• This may not be what you want…
App Lifecycle for Background Location Tracking Apps
Fast Application Resume
35. private void InitializePhoneApplication()
{
...
// Handle reset requests for clearing the backstack
RootFrame.Navigated += CheckForResetNavigation;
...
}
private void CheckForResetNavigation(object sender, NavigationEventArgs e)
{
// If the app has received a 'reset' navigation, then we need to check
// on the next navigation to see if the page stack should be reset
if (e.NavigationMode == NavigationMode.Reset)
RootFrame.Navigated += ClearBackStackAfterReset;
}
Clearing Previously Launched Pages on Fast App Resume
Add Logic to App.Xaml.cs to Check for Reset Navigation (Behavior Already Implemented in Project Templates)
4/16/20Microsoft3
36. private void InitializePhoneApplication()
{
...
// Handle reset requests for clearing the backstack
RootFrame.Navigated += CheckForResetNavigation;
...
}
private void CheckForResetNavigation(object sender, NavigationEventArgs e)
{
// If the app has received a 'reset' navigation, then we need to check
// on the next navigation to see if the page stack should be reset
if (e.NavigationMode == NavigationMode.Reset)
RootFrame.Navigated += ClearBackStackAfterReset;
}
private void ClearBackStackAfterReset(object sender, NavigationEventArgs e)
Clearing Previously Launched Pages on Fast App Resume
Add Logic to App.Xaml.cs to Check for Reset Navigation (Behavior Already Implemented in Project Templates)
4/16/20Microsoft3
38. Maps APIs on Windows Phone 8
• Windows Phone 8 has new Map controls, accessible in the
following namespaces:
• Microsoft.Phone.Maps
• Microsoft.Phone.Maps.Controls
• Microsoft.Phone.Maps.Services
• The Bing Maps Control is still supported, but is deprecated
• You should only use the Bing Maps Control when you upgrade
an app from Windows Phone OS 7.1 to Windows Phone 8
• Usage of the new Maps control differs from the Bing Maps control
39. ID_CAP_MAP Capability
• You must include the ID_CAP_MAP capability in your app manifest
• If you forget, calls to location APIs throw an UnauthorizedAccessException
40. • Add a Map to your UI
• In XAML:
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<maps:Map x:Name="MyMap"/>
</Grid>
• In Code:
private void CreateMap()
{
Map MyMap = new Map();
ContentPanel.Children.Add(MyMap);
}
Map Control
41. • By default, map displays at zoom level 1 (world view)
and centered at Lat: 0, Long: 0
• Use the Center and ZoomLevel properties to change
this, in XAML or in code
//Set the Map center by using Center property
MyMap.Center = new GeoCoordinate(47.6097, -122.3331);
//Set the map zoom by using ZoomLevel property
MyMap.ZoomLevel = 10;
Center and Zoom Level
42. MapViews
• It is common to move a map display from one location to another
• A new map view is defined any time the position of the map is changed as a result of panning,
zooming, rotating, or tilting
• You can use the SetView method to define a map view
• This takes the following parameters:
• Center: A GeoCoordinate object defining the center of the map view
• ZoomLevel: zoom level between 1 and 20
• Heading: specifies the directional heading that is pointing “up” on the mapin geometric degrees
between 0 and 360
• Pitch: specifies the degree to which the map is tilted as a value between 0 and 180
• BoundingRectangle: a LocationRectangle object that contains the Map control
• AnimationKind: sets the kind of animation you want to see (None, Linear or Parabolic) when the
view changes
43. • Set the cartographic mode of the map with the CartographicMode property
Cartographic Mode
Road (default) Aerial Hybrid Terrain
44. • You can display the map in a light or dark color mode by setting the ColorMode property
Light and Dark Color Modes
Light (default) Dark
45. Pedestrian Features and Landmarks
• You can display additional elements on your map, such as
landmarks and pedestrian features
• Set the LandmarksEnabled property to true to display
landmarks
• Set the PedestrianFeaturesEnabled to true to display
pedestrian features
• Landmarks are visible only when the ZoomLevel is 7 or higher,
and the Pitch property is 25 or higher
47. • Unlike the Bing Maps API, the Windows Phone
Maps API does not have a specific PushPin object
• However, you can create your own PushPins by
drawing UIElements onto a MapOverlay, then
add the MapOverlay to a MapLayer which you
add to the Map
Pushpins
4/16/20Microsoft4
48. private Grid CreatePushpin()
{
//Creating a Grid element.
Grid MyGrid = new Grid();
MyGrid.RowDefinitions.Add(new RowDefinition());
MyGrid.RowDefinitions.Add(new RowDefinition());
MyGrid.Background = new SolidColorBrush(Colors.Transparent);
//Creating a Rectangle
Rectangle MyRectangle = new Rectangle();
MyRectangle.Fill = new SolidColorBrush(Colors.Black);
MyRectangle.Height = 20;
MyRectangle.Width = 20;
MyRectangle.SetValue(Grid.RowProperty, 0);
MyRectangle.SetValue(Grid.ColumnProperty, 0);
//Adding the Rectangle to the Grid
MyGrid.Children.Add(MyRectangle);
Creating a Pushpin
4/16/20Microsoft4
49. private Grid CreatePushpin()
{
//Creating a Grid element.
Grid MyGrid = new Grid();
MyGrid.RowDefinitions.Add(new RowDefinition());
MyGrid.RowDefinitions.Add(new RowDefinition());
MyGrid.Background = new SolidColorBrush(Colors.Transparent);
//Creating a Rectangle
Rectangle MyRectangle = new Rectangle();
MyRectangle.Fill = new SolidColorBrush(Colors.Black);
MyRectangle.Height = 20;
MyRectangle.Width = 20;
MyRectangle.SetValue(Grid.RowProperty, 0);
MyRectangle.SetValue(Grid.ColumnProperty, 0);
//Adding the Rectangle to the Grid
MyGrid.Children.Add(MyRectangle);
Creating a Pushpin
4/16/20Microsoft4
50. private void AddMapOverlay()
{
Grid MyGrid = CreatePushpin();
//Creating a MapOverlay and adding the Grid to it.
MapOverlay MyOverlay = new MapOverlay();
MyOverlay.Content = MyGrid;
MyOverlay.GeoCoordinate = new GeoCoordinate(47.6097, -122.3331);
MyOverlay.PositionOrigin = new Point(0, 0.5);
//Creating a MapLayer and adding the MapOverlay to it
MapLayer MyLayer = new MapLayer();
MyLayer.Add(MyOverlay);
MyMap.Layers.Add(MyLayer);
}
Drawing a UIElement onto a MapLayer
53. MapsTask
MapsTask makes launching the built-in Maps application easy
MapsTask mapsTask = new MapsTask();
//Omit the Center property to use the user's current
location.
mapsTask.Center = new GeoCoordinate(47.6204, -122.3493);
mapsTask.SearchTerm = "coffee";
mapsTask.ZoomLevel = 17;
mapsTask.Show();
54. MapsDirectionsTask
• Launching built-in Maps tasks with directions enabled is trivial too!
// Get Directions
MapsDirectionsTask mapsDirectionsTask = new MapsDirectionsTask();
// You can specify a label and a geocoordinate for the end point.
// GeoCoordinate spaceNeedleLocation = new GeoCoordinate(47.6204,-122.3493);
// LabeledMapLocation spaceNdleLML = new LabeledMapLocation("Space Needle",
// spaceNeedleLocation);
// If you set the geocoordinate parameter to null, the label parameter
// is used as a search term.
LabeledMapLocation spaceNdleLML = new LabeledMapLocation("Space Needle", null);
// If mapsDirectionsTask.Start is not set, the user's current location
// is used as start point.
mapsDirectionsTask.End = spaceNdleLML;
mapsDirectionsTask.Show();
55. • Use the map downloader task to enable users to download map
data for offline use
• The task launches the Maps settings application which allows
the user to select a region of map data to download
MapDownloaderTask
MapDownloaderTask mapDownloaderTask = new MapDownloaderTask();
mapDownloaderTask.Show();
56. • Use the map updater task to enable users to update map data
they have previously downloaded for offline use
• The task launches the Maps settings application which
immediately checks to see if there are updates available for any
previously downloaded map data
MapUpdaterTask
MapUpdaterTask mapUpdaterTask = new MapUpdaterTask();
mapUpdaterTask.Show();
58. What’s New in Maps
and Location Services
in Windows Phone 8.1
59. //build/ Sessions: Maps & Location Services
• Building Geo-Aware Apps with Maps and Geofencing (2014)
• http://channel9.msdn.com/Events/Build/2014/2-526
• Creating Engaging Windows Store Apps with the Bing Platform (2014)
• http://channel9.msdn.com/Events/Build/2014/2-654
• Building the Best Mapping Apps for Windows Phone (2013)
• http://aka.ms/Build2013Maps
• Using Geolocation and Geofencing in Windows Store Apps (2013)
• http://aka.ms/Build2013Geofencing
• All //build/ 2014 sessions available online:
• http://channel9.msdn.com/events/build/2014
60. Review
• Windows Phone Runtime location API is new in Windows Phone 8. It has the following features:
• Accessible from managed and native code
• Greater support for one-shot location acquisition
• Support for Background Location Tracking
• Convergent with Windows 8
• Use the new Maps APIs in Windows Phone 8 to develop maps-based apps, and incorporate location
and search features
• Set Center and Zoom Level
• Animate to new location and zoom using map views
• Select Road, Aerial, Hybrid or Terrain cartographic display modes
• Draw UIElements onto a MapOverlay on top of the Map
61. Next Steps…
Get Ready to Become a Windows Phone Developer
Download the SDK at dev.windowsphone.com
Explore the Microsoft samples and start building apps in Visual Studio
Learn More About Windows Phone Devvia Official Microsoft Videos
Windows Phone 8 Jump Start Training: http://bit.ly/wp8jump
Windows Phone 8 Dev for Absolute Beginners: http://bit.ly/wp8devAB
Check Out Additional Learning Resources
Pluralsight WP Training: www.pluralsight.com/training/Courses#windows-phone
Nokia Developer: www.developer.nokia.com
Download Additional Resources & Become an Expert
Download the Windows Phone Toolkit: phone.codeplex.com
Nokia Developer Offers: http://bit.ly/nokiadevoffers
62
1
2
3
4
62. Microsoft & Nokia GIS References Links
• Location for Windows Phone 8: http://bit.ly/WP8SDKloc
• Maps and Navigation for Windows Phone 8: http://bit.ly/WP8SDKmaps
• Nokia Lumia HERE APIs & HERE App Launchers: http://bit.ly/HEREAPI
• Online Training Videos
• Maps & Location Webinar (WP8 Jumpstart Series): http://bit.ly/WP8JumpMaps
• Nokia Lumia App Labs – HERE Maps & Location API: http://bit.ly/LumiaLabHERE
• Bing Maps Management Portal & Accounts Center: http://www.bingmapsportal.com
• Bing Maps REST Services: http://bit.ly/BingMapsREST
• Microsoft Bing Maps Blog: http://bit.ly/BingMapsBlog
• Ricky’s Bing Maps Blog: http://rbrundritt.wordpress.com
63. Samples and GeoFencing Guides
• Windows Geolocation and Geofencing SDK Samples
• http://aka.ms/WindowsGeoSamples
• Blogs and Guides
• Geofencing, start to finish guide
• http://aka.ms/GeofencingGuide
• Best Practices for geofencing apps
• http://aka.ms/GeofencingBestPractices
• Geofencing API reference
• http://aka.ms/GeofencingAPIs
64. Location Intelligence for Windows Store Apps
Free GIS eBook
By Rick Brundritt
Bing Map Technical Solution Professional – EMEA
• Primarily focused on Windows Store apps but good for WP8 apps too
• Chapters 5 & 6 on Bing services can be applied to WP8
• Chapter 7 features a reusable Portable Class Library (PCL) used to import
different types of spatial data, works great for WP8
• Chapter 11 on cross platform development covers WP8
Download for free at:
http://rbrundritt.wordpress.com/my-book/
65. Windows Phone Resources
• Nick Landry’s Blog: www.AgeofMobility.com
• Nick Landry’s Getting Started Resources: www.ageofmobility.com/?page_id=961
• Windows Phone Developer Blog: blogs.windows.com/windows_phone/b/wpdev
• Windows Phone Consumer Blog: blogs.windows.com/windows_phone/b/windowsphone
• Nokia WP Wiki: www.developer.nokia.com/Community/Wiki/Category:Windows_Phone
• Nokia Dvlup Challenges & Rewards: www.dvlup.com
• Nokia Conversations Blog: http://conversations.nokia.com
• Microsoft App Studio: http://apps.windowsstore.com
• Windows Phone Developer Magazine (online via Flipboard): http://flip.it/95YFG
• GeekChamp (WP & Win8 dev): www.geekchamp.com
• Windows Phone Central (News): www.wpcentral.com
66. Thank You!
Slides and demos will be posted on SlideShare (see link below)
Let me know how you liked this session. Your feedback is important and appreciated.
Slideshare: www.slideshare.net/ActiveNick
Blog: www.AgeofMobility.com
Twitter: @ActiveNick
Mobile Apps: www.bigbaldapps.com
LinkedIn: www.linkedin.com/in/activenick
Website: www.mobility42.com
Email: ext-nick.landry@nokia.com