UWP apps development - Part 3
Download as PPTX, PDF0 likes67 views
This document discusses several topics related to universal app development including: 1. Persisting settings locally or in Azure blob storage. Blob storage allows storing unlimited objects up to 200GB in containers. 2. Using toasts, tiles, badges and push notifications. Notifications are not guaranteed and can have payloads. The Azure Notification Hub can send notifications to multiple platforms. 3. Capabilities of Cortana and geofencing including location-based reminders, contextual information and rule-based actions.
UWP apps development - Part 3
- 1. UniversalApps Development Part 3/3 Jiri Danihelka
- 2. Persisting Settings • Local and Roaming
- 3. Azure blob storage • 10 trillion objects in Azure Storage • 4 trillion object requests per month • Blobs (any file type: image, doc, etc.) – Can be up to 200GB (page-type up to 1TB) – Accessed by private or public URL – http://<storage account>.blob.core.windows.net/<container>/<blob> • Blobs go in containers – Partitioning, or tenant-approach – Can be locally & geo-redundant – Unlimited quantity and unlimited content • Windows Azure Storage in NuGet – Solarizr introduces the Blob helper/wrapper
- 4. Some options • Ship app with initial database file – Copy to isolated storage for use • Ship with schema creation commands and initial data – Execute on first startup • Maintain a central db image in Azure storage – Download on first run
- 5. Package.appxmanifest • Toast is a capability • Toast is always transient • Toast can contain a payload • Toast is not guaranteed
- 8. Handle toast-invoked launch in App.OnLaunchAsync() 1
- 9. Push notifications • Toast, Tile, Badge, Raw • One user, multiple devices • WPNS/MPNS is migrating to WNS • The WNS service is a free service • Notifications are not guaranteed • Notification can have payloads
- 10. The Azure Notification Hub • Notifications can have tags – The hub managed tags – You can send with tag queries • The hub gives you awesome telemetry • The Azure Notification Hub can send to iOS, Android, Kindle, and Windows Notification Hub App back-end Tag:MusicTag:Sports Tag:Music
- 12. Example Code
- 14. • Phone-only • Voice Commands (System integration) • Speech Recognition (Speech to Text) • Speech Synthesis (Text To Speech) • Voice Command Quickstart – http://code.msdn.microsoft.co m/Voice-Commands- Quickstart-64ce68ce • Speech Recognition Quickstart – http://code.msdn.microsoft.co m/Speech-Recognition-And- TTS-483fe645 • Responding to speech interactions – http://msdn.microsoft.com/libr ary/windows/apps/xaml/dn630 426.aspx What can Cortana do for us?
- 16. • Provide location-based reminders & alerts • Provide contextual info at an area of interest • Take automatic actions based on rules • Guidelines for Geofencing Apps – http://msdn.microsoft.co m/en- us/library/windows/apps/ dn631756.aspx • Geofencing Namespace on MSDN – http://msdn.microsoft.co m/en- us/library/windows/apps/ windows.devices.geolocati on.geofencing.aspx What about Geofencing?
- 17. How to use Geofencing? • Making sure your app has the proper permissions. • Defining your geographic region (circle). • Defining your Entered/Exited events. • Handle events and taking action.
- 18. How can I log? • Event Tracing for Windows (ETW) using Windows.Foundation.Diagnostics – LoggingChannel(s) -> Logging Session – Writes to circular memory buffer – Write log to local storage on critical error • Rethrow for application exit – Check for log existence on next start • Background transfer to central log repo for later analysis • Windows.Foundation.Diagnostic Resources – http://channel9.msdn.com/Events/Build/2013/3-136
- 19. PDF • Implementation derives from the ISO 32000-1 standards • Abstracts away all the format complexity from the developer • Focus is on rendering of PDF content as an image • APIs enable reading scenarios such as magazines • Password-protected files are supported
- 20. Best practices when using PDF APIs • Use techniques such as UI virtualization to render only pages in and around the view • Hold on to rendered pages if you need to re-render them • Release pages that are no longer needed • Cancel page renderings that are superseded • Render only required portions of the page
- 21. System Triggers When background resources change When a channel may be dropped When the Internet becomes available When an app is added When an app is removed When a change occurs, such as cost When the associated MSA change When the system has updated an app When fast user switch or logon occurs When a new SMS message is received When the time zone & time changes When the user becomes absent When the user becomes present
- 23. Background Transfer Task • Windows.Networking.BackgroundTransfer • No file size restriction • Multi-part MIME (large transfers) • Additional verbs (PUT, RETR, STOR) support • ftp://user:password@server/file.txt • In-progress stream access • Data-Sense, Battery-Sense aware
- 24. • SignalR – An alternative to push notifications – Real-time chat between the field agent and the Dispatcher • Advanced multi- tenancy • Provisioning – Pull down prepared- data • Backup database – Copy to release locks – Background transfer task Advanced ideas
- 25. • Cross-platform – Xamarin View Models – Xamarin.Forms – Cordova • Shared top navigation • Keyboard navigation • Third-party controls – Including charting • Print Contract • Second screen – Support special devices and workflow – Simplified UI and feature set • Microsoft OCR Library • Handwriting • Flexibility with XAML Reader Advanced ideas