Developer Conference 2011

1. Developer Conference 2011 MICROSOFT USER GROUP KOLKATA

2. Developing Application in Windows Phone 7 - Kunal Chowdhury

3. Application Flavors • Framework mainly targeted for Web • XAML/event-driven application UI • Rapid creation of visually stunning apps • Metro-themed UI controls • spanning Windows and web • High performance game framework • Rapid creation of multi-screen 2D and 3D games • Widely adopted robust technology

4. Phone Application Development Tools Phone Emulator Windows Phone device Samples Documentation Packaging & Verification Tools Guides Community Packaging and Verification Tools DemoApp.xap Windows Phone Emulator

5. Application Deployment Process

6. Basics of Phone Programming

7. Phone Application Page • PhoneApplicationPage is the root of any WP7 XAML page. • If you already worked on Silverlight, you must be aware of that by default "UserControl" is the root of any Silverlight XAML page. Similarly, Phone 7 XAML has the root named "PhoneApplicationPage". <phone:PhoneApplicationPage x:Class="HelloWorldDemo.MainPage“ . . . SupportedOrientations="Portrait“ Orientation="Portrait“ shell:SystemTray.IsVisible="True">

8. Application Bar • Application Bar is a set of icon buttons and/or menu items, which provides easy access to application's most common tasks. • It resides at the bottom of the phone screen. • It can contain a row of 1-4 icon buttons for common tasks, a set of menu items to provide user easy access to the other specific actions.

9. Application Bar Design Guidelines • Use image of White color with Transparent background. • Use 48 x 48 pixel icon images. • Never draw circle for the icons. • Use icons for most commonly used commands. • Place only 1 - 4 icon buttons in the panel. • Don't place more than 5 menu items in the application bar. • Don't add more than 20 characters in the menu items. • Data Binding is not supported in Application Bar. • Properly use Opacity to overlay the Application Bar. • All text items will be converted to lower case while running.

10. demo Hello Windows Phone 7

11. Application Life Cycle (Terms) There are some terminologies available to describe the Application Lifecycle of a Windows Phone 7. It consists of the following things: • Launch • Running State • Closed State • Deactivated State • Reactivated State

12. Application Life Cycle

13. Page State & Application State • Page state stores the current state of the page while switching to a different page or application and retrieve it back once you return to the same page. • Application State stores and retrieve values in order to access them from different pages across the whole application. • Tombstoning saves the current data and then moves the app to the background or closes the app after saving all the data.

14. demo Windows Phone 7 States

15. Launchers & Choosers • Enable applications to provide a set of common phone tasks to users • Launchers let you fire and forget • SMS, Email, Dialer, Search etc. • Choosers let you fire and pick the results back • Picture, Camera, Contact etc.

16. Location Services • The service obtains location data from multiple sources such as GPS, Wi-Fi, and cellular • Applications can access location information • Allows you to create location-aware applications

17. demo Location Services

18. Resources • http://www.kunal-chowdhury.com • http://www.silverlight-zone.com • WP7 Tutorial: http://tinyurl.com/31DaysWithWP7

19. Contact • http://twitter.com/kunal2383 • http://facebook.com/blog.kunal2383 • Discussion Forum: http://tinyurl.com/TechTalkWithKunal • Email Me: webmaster@kunal-chowdhury.com

20. Questions & Quiz

22. Thank you