The document discusses the integration of Xamarin with Azure for mobile app development, focusing on features like offline data synchronization, authentication, and push notifications. It provides insights into various backend options, including .NET and Node.js, demonstrating how to set up mobile services and manage connectivity. Additional considerations such as conflict resolution and performance optimization for data operations are also covered.

1. Xamarin & Azure
BFF, Really?
Benjamin Tam
Twitter: @benjamintam

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Why?
› My apps… apart from actual phone functions
› Productivity
› Google Maps
› Games
› Social Media
› Calculator!
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Azure App Services
› Mobile Services vs Mobile App
› Mobile App vs API App
› Client SDK
› Storage (including Offline Data Sync)
› Authentication
› Push Notifications
› .NET or Node.js back-end
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Demo: Xamarin.Forms Solution
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Demo: Running App
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Demo: App Service
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Demo: Mobile App
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Getting Started
› Quickstart - Easy Tables
› Node.js backend only
› “No code” CRUD API
› Code is actually in corresponding .js & .json files
› Uses OData & SQL Azure
› Debugging
› Log Stream
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Offline Data Sync
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Network Connectivity
› Is there a network connection?
› Wifi
› Cellular
› 2G, 3G, 4G
› Roaming
› What if the network status changes mid-operation?
› Xam.Plugin.Connectivity
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Device Storage
› Properties dictionary
› Local file storage
› SQLite.Net (*PCL)
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How Does Offline Data Sync Work?
› Cache server data locally
› Create/modify data locally
› Developer decides when to sync with Azure
› Push
› Pull
› Purge
› Implicit push
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Enabling Offline Data Sync
› Microsoft.Azure.Mobile.Client.SQLiteStore NuGet
› Configuration
› IMobileServiceTable vs IMobileServiceSyncTable
› Define the local store and table(s)
› Operations
› IMobileServiceSyncContext
› IMobileServiceSyncHandler
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Other Considerations
› Soft deletions
› Conflict resolution
› What to keep?
› MobileServicePushFailedException
› Performance
› Full vs Incremental Sync
› Collapse Logic
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Demo: Offline Data Sync
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Thank You!
Twitter: @benjamintam
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