[bdotnet] cloud connected mobile apps
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Architecting Cloud Connected Mobile Apps
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Mobile Apps• Target 3 platforms (iOS, Android, Windows Phone)
• Create Native User Interface (iOS != Android != Windows Phone)
• Provide Platform specific User Experience
• High Performance
• Scalable
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Xamarin
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Xamarin.Forms
Shared UI Code!
traditional ui code sharing with all native
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Code Sharing?
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Platform Divergence• Platforms differ, even in subtle ways
• File locations for DBs, etc.
• Some shared code needs to be platform-aware
• Devices differ widely, even within a platform
• Hardware Features: camera, compass, NFC
• Form Factor: Screen size, ratio, density
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So?
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X-Plat Architecture
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What’s a Pattern?
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Patterns Vocabulary• Singleton
• Façade (or Manager)
• Provider (also, Simple Dependency)
• Model View ViewModel (MVVM)
• Model View Controller (MVC)
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Singleton
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Facade´
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Provider
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MVC
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MVVM
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Project Structure
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Demo!
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public class ExpenseItem { [PrimaryKey, AutoIncrement] public int ID { get; set; } public string Name { get; set; } public double Amount { get; set; }
}
Model
public List<ExpenseItem> Expenses
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Scale!
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Cloud Connected Apps
Azure
Parse
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Demo!
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http://xhackers.co/xhacknight/
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Thanks!