1. Windows Phone 7 advanced services
CO6025

2. Introduction Launchers and Choosers Accelerometer GPS and Maps
A set of classes for interacting with underlying phone features/resources, e.g. Camera, , SMS etc.
Accelerometer
GPS and Maps

3. Launchers and Choosers
There is no low level access to phone features
Everything is through managed code
All features are accessed using phone UI, though data can be communicated from an app.
A launcher starts a phone feature
A chooser allows you to select an item from phone store
The application is tombstoned with some tasks so make sure you save application state

4. List of Tasks Following features are accessible Photos Media Email
Phone
Contacts
SMS
Search
Marketplace

5. Photo access PhotoChooserTask CameraCaptureTask
Show() method launches media library browser
When photo is selected it returns to your application
Completed event fires and returns a stream containing the picture
CameraCaptureTask
Show method starts the camera
When a photo is taken AND accepted it returns to application
Completed event fires returning the filename of the taken photo and a stream containing the picture.

6. Media library access MediaPlayerLauncher MediaLibrary MediaElement
Show() method launches the phones media player
Can only play the item set in the Media property
Item must be from within the application or in the applications own Isolated Storage space.
MediaLibrary
Can access the contents of the library (e.g. photos, music and video)
MediaElement
Music and video can be played using the MediaElement class
MediaElement works inside the application (i.e. it is not a launcher)
Can play local media files too

7. Email access EmailAddressChooserTask EmailComposeTask
Show() method launches a list of contacts for whom you have addresses
Completed event returns an address if one is selected
ComposeTask
Show() method launches the system in the phone pre-populated with the details you provide.
There is NO Completed event

8. Phone access PhoneNumberChooserTask PhoneCallTask
Show() method launches a list of contacts for whom you have phone numbers
Completed event returns the chosen phone number
PhoneCallTask
Show() method dials the number you provide in the PhoneNumber property
There is no completed event

9. Contact access SaveEmailAddressTask SavePhoneNumberTask
Show() method launches the Contact page and allows you to save the provided address
Can be added to an existing contact or a new contact can be created
Completed handler returns an error flag.
SavePhoneNumberTask
As with Save AddressTask, but allows the provided PhoneNumber to be save.

10. SMS access SmsComposeTask
Show() method launches the SMS messaging system prepopulated with the provided To and Body properties.
The user can click the send button or navigate back.
The To and Body fields can be edited before sending.

11. Search access SearchTask
Show() method performs search with the provided SearchQuery property
Uses normal Bing search syntax
Demo uses ‘domain: in the query to restrict search to the tutorial domain
Lots of other query filters possible

12. Marketplace access MarketplaceHubTask MarketplaceSearchTask
Show() method launches full MarketPlace site for the provided ContentType (either Music or Applications)
MarketplaceSearchTask
Show() method searches ContentType for provided SearchTerms
MarketplaceDetailTask
Show() method displays detail page for the provided App Id.
If App Id is null provides details for current app.
Useful for allowing a paid update
MarketplaceReviewTask
Show() method displays reviews page for current App.

13. Accelerometer
Accelerometer class provides access to built in accelerometer
Start and Stop method
ReadingChanged event returns X, Y and Z acceleration values
Values in range -2 to +2
Value of 1 equivalent to normal gravity
Application processes values as required

14. GPS GeoCoordinateWatcher Start and Stop methods
StatusChanged event handler
PositionChanged event handler
Position contains
TimeStamp
Latitude and Longitude
Bearing
Speed
Horizontal and Vertical accuracy estimate

15. Bing Map control Drop Map onto design surface
By default provides a browse-able interface
CredentialProvider required to get rid of watermark message
Sign up with Bing for apiKey!
Center property can be linked to GPS to provide position tracking
Methods provided for positioning other UI elements in correct geo-coordinate location.
E.g. LocationToViewportPoint
Events to help update UI
E.g. ViewChangeOnFrame