Xamarin & Cognitive Services Slides
0 likes209 views
Il documento discute le differenze tra diversi linguaggi e ambienti di sviluppo per applicazioni mobile, evidenziando sfide come la duplicazione della logica di business e l'accesso alle API native. Viene descritta l'architettura del codice e i design patterns utilizzati, con un focus su come i vari framework supportano piattaforme diverse come iOS, Android e Windows. Include anche dettagli tecnici su strumenti e funzionalità come la compilazione condizionale e il data binding.
![ Dependency Service
PCL indipendente dai progetti specifici PCL testabile
Subset meno ampio del .NET Framework
DLL in fase di compilazione Overhead!
namespace SampleApp
{
public interface IGpsService
{
Task<Location> GetLocation();
}
}
[assembly: DependencyService(typeof(GpsService))]
namespace SampleApp.Droid
{
public class GpsService : IGpsService
{
// Native Implemetation...
}
}](https://image.slidesharecdn.com/xamarin-cognitiveservicespresentation-161229162322/85/Xamarin-Cognitive-Services-Slides-12-320.jpg)
![0 Non-clipart
0 Non-LineDrawing
False
Clip ArtType
Line Drawing Type
Black & White Image
Content of Image:
Categories
AdultContent
Adult Score
Faces
[{ “name”: “people_swimming”, “score”: 0.099609375 }]
False
0.18533889949321747
[{ “age”: 27, “gender”: “Male”, “faceRectangle”:
{“left”: 472, “top”: 258, “width”: 199, “height”: 199}}]
Image Colors:
Dominant Color Background
Dominant Color Foreground
Dominant Colors
Accent Color
White
Grey
White
Blue
Type of Image:](https://image.slidesharecdn.com/xamarin-cognitiveservicespresentation-161229162322/85/Xamarin-Cognitive-Services-Slides-16-320.jpg)
Xamarin & Cognitive Services Slides
- 3. iOS WindowsAndroid Objective-C / Swift Xcode C# Visual Studio Java Android Studio Logica di business duplicata Linguaggi e IDE diversi Diversi Team di Lavoro e applicazioni “non in linea”
- 4. C# codebase 100% accesso ad API native Performance ~ Sviluppo nativo iOS C# UI Windows C# UIAndroid C# UI Shared C# Mobile
- 5. Shared C# Mobile Xamarin.Forms Xaml/C# UI codebase API di sistema astratte Performance < Xamarin.Native
- 6. Microsoft.Phone Microsoft.Networking Windows.Storage Windows.Foundation Microsoft.Devices System.Data System.Windows System.Numerics System.Core System.ServiceModel System.Net System System.IO System.Linq System.Xml
- 7. MapKit UIKit iBeacon CoreGraphics CoreMotion System.Data System.Windows System.Numerics System.Core System.ServiceModel System.Net System System.IO System.Linq System.Xml
- 8. Text-to-speech ActionBar Printing Framework Renderscript NFC System.Data System.Windows System.Numerics System.Core System.ServiceModel System.Net System System.IO System.Linq System.Xml
- 9. Visual Studio: Plugin ora integrato in Visual Studio Supporto ad Android, iOS e Windows Phone Xamarin Studio (ora Visual Studio for Mac): Disponibile sia per Windows che per OS X Supporto ad Android e iOS (solo su OS X)
- 10. Unico linguaggio di markup: XAML Controlli della UI tradotti in controlli nativi a Runtime <TabbedPage /> Supporto a binding e commading
- 11. public void DoSomething() { #if WINDOWS_PHONE //API di Windows Phone / UWP #endif #if __ANDROID__ //API di Android #endif #if __IOS__ //API di iOS #endif } Compilazione condizionale Nessuna DLL in fase di compilazione SP dipendente da progetti specifici Codice Poco comprensibile e testabile!
- 12. Dependency Service PCL indipendente dai progetti specifici PCL testabile Subset meno ampio del .NET Framework DLL in fase di compilazione Overhead! namespace SampleApp { public interface IGpsService { Task<Location> GetLocation(); } } [assembly: DependencyService(typeof(GpsService))] namespace SampleApp.Droid { public class GpsService : IGpsService { // Native Implemetation... } }
- 13. Design pattern architetturale ispirato a Model-View-Presenter (e MVC) ViewModel non conosce direttamente View Più View possono condividere lo stesso ViewModel View notifica e viene notificata attraverso Data Binding View notifica eventi tramite Comandi Portabile! Testabile!
- 15. Cognitive Services SearchSpeech Language KnowledgeVision
- 16. 0 Non-clipart 0 Non-LineDrawing False Clip ArtType Line Drawing Type Black & White Image Content of Image: Categories AdultContent Adult Score Faces [{ “name”: “people_swimming”, “score”: 0.099609375 }] False 0.18533889949321747 [{ “age”: 27, “gender”: “Male”, “faceRectangle”: {“left”: 472, “top”: 258, “width”: 199, “height”: 199}}] Image Colors: Dominant Color Background Dominant Color Foreground Dominant Colors Accent Color White Grey White Blue Type of Image:
- 17. JSON: { "language": "en", "orientation": "Up", "regions": [ { "boundingBox": "41,77,918,440", "lines": [ { "boundingBox": "41,77,723,89", "words": [ { "boundingBox": "41,102,225,64", "text": "LIFE" }, { "boundingBox": "356,89,94,62", "text": "IS" }, { "boundingBox": "539,77,225,64", "text": "LIKE" } ...