Optimizing windows phone apps
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This document discusses optimizing Windows Phone Mango applications and the certification process. It covers topics like application policies, submission requirements, technical certification standards, additional requirements for specific app types, Mango improvements, debugging and testing tips. Key points include the ability for Mango apps to opt into 32-bit color rendering and background image decoding, as well as ways to monitor memory usage, conduct end-to-end testing, and use the Windows Phone Marketplace Test Kit.
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Optimizing windows phone apps
- 1. Optimizing Your Windows Phone Mango Applications [email protected] Microsoft Korea
- 2. Application Certification Requirements 1. Application Policies 2. Content Policies 3. Application Submission Requirements 4. Technical Certification Requirements 5. Additional Requirements for Specific Application Types
- 3. Submission and Certification Process http://msdn.microsoft.com/en- us/library/hh184843(v=vs.92).aspx
- 4. Application Submission Requirements 4.1 Installation Package Validation 4.2 Application Code Validation 4.3 Phone Capabilities Detection 4.4 Language Validation http://msdn.microsoft.com/en- us/library/hh184844(v=vs.92).aspx
- 5. Technical Certification Requirements 5.1 Application Reliability 5.2 Performance and Resource Management 5.3 Phone Functionality 5.4 Security 5.5 Content Validation http://msdn.microsoft.com/en- us/library/hh184840(v=vs.92).aspx
- 6. Additional Requirements for Specific Application Types 6.1 Location Aware Application 6.2 Push Notifications Application 6.3 Applications Running under a Locked Screen 6.4 Music + Videos Hub Application 6.6 Applications That Extend the Picture Viewer 6.7 Applications That Extend the Share Picker 6.8 Applications That Extend the Pictures Hub 6.9 Applications That Play or Stream Background Audio 6.10 Applications That Use Background Transfer http://msdn.microsoft.com/en- us/library/hh184838(v=vs.92).aspx
- 7. Mango Improvements 1. General Runtime Improvements Examples: Faster, more responsive scrolling Lower memory footprint Better video playback 2. Improved Default Behaviors For 7.1 Apps Examples: Fast-App-Switching Better XAML Parser 3. New Optional Behaviors For 7.1 Apps
- 8. 32 Bits-Per-Pixel Rendering 7.0 supports only 16 bpp rendering banding in gradients In Mango the default is still 16 bpp Apps can opt-into 32 bpp in the manifest Recommended if your app wants to show Photos Designs with gradients Video apps get opt’ed in automatically
- 9. Demo - 32 bpp vs. 16 bpp
- 10. Background Image Decoding In 7.0 image decode happens on UI thread May result in stuttering, non-responsive UI 7.1 apps can opt-into background decode <Image x:Name="myBackgroundDecodedImage"> <Image.Source> <BitmapImage UriSource="http://www.foo.com/bar.jpg" CreateOptions="BackgroundCreation"/> </Image.Source> </Image>
- 12. Media and Objects Supported Media Codecs for Windows Phone http://msdn.microsoft.com/en- us/library/ff462087(v=vs.92).aspx Set Build Action to Content for Media Hiding and Display Objects Visibility vs. Opacity User Input Use Manipulation Events http://msdn.microsoft.com/en- us/library/ff426933(VS.95).aspx
- 13. Progress Bar, WebSerivces Use PerformanceProgressBar instead of ProgressBar Use HttpWebRequest instead of WebClient Application Startup Understanding Threads Identifying Performance Issues for Graphics- Intensive Applications http://msdn.microsoft.com/en- us/library/ff967560(v=vs.92).aspx
- 14. Memory Testing First: Design your app with memory in mind Monitor your memory usage Test with real word data Consider monitoring your “heavy” objects Page instances UserControl instances Data objects that participate in binding Tiny UI leak can cause entire visual tree to be leaked Use the 7.1 Profiling Tools
- 16. Control Your App With Sockets Use socket APIs to connect to your desktop computer This can be useful for testing/debugging scenarios: Monitoring app metrics (such as memory/heap objects) Logging messages/results Controlling the app workflow
- 17. End-To-End Testing Navigating through the entire app State and visuals are correct No leaks and no crashes Investing in an automated script may pay off Do the math Consider your test matrix Think about stability (memory and stress testing) Write code with testing in mind
- 19. Windows Phone Marketplace Test Kit Objectives : Protect to fail submission process http://msdn.microsoft.com/en- us/library/hh394032(v=vs.92).aspx