Xamarin Forms
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This document discusses Xamarin.Forms, a cross-platform framework for developing mobile apps in C# that allows writing code once and running it on Android, iOS, and Windows. It uses a shared UI code approach with platform-specific UI rendering, and supports the MVVM pattern with data binding for high code reuse. Key features of Xamarin.Forms mentioned include over 40 shared pages, layouts and controls defined in XAML, navigation support, animations, and mapping.
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Xamarin Forms
- 1. Xamarin.Forms #dotbari write once, run everywhere and BE NATIVE!
- 2. What is Xamarin? • Un framework cross-platform per lo sviluppo di applicazioni mobile in C# • Un ambiente di sviluppo – Xamarin Studio – Xamarin plug-in per Visual Studio • Un ambiente di test con Xamarin Test Cloud
- 3. Xamarin Approach Native UI C# Native UI C# Share d UI Code Shared C# App Logic Shared C# App Logic Shared App Logic Shared App Logic Androi d UI Code Windo ws UI Code in C# Shared App Logic Shared App Logic iO S UI Andr oid UI Wind ows UI Shared UI Code iOS UI Android UI Window s UI Shared App Logic View and ViewModel (UI and controller) Shared App Logic Native UI C# Native UI C# Native UI C# Share d UI Code Shared C# App Logic Shared C# App Logic Shared App Logic Androi d UI Code Windo ws UI Code in C# Shared App Logic Shared App Logic iO S UI Andr oid UI Wind ows UI Shared UI Code Model Traditional (80% code reuse) MVVM con Xamarin.Forms (99,9% code reuse)
- 4. Model-View-ViewModel Data View ViewModel Model How to display information What to display Flow of interaction Business Logic Data objects Events Data
- 5. Model-View-ViewModel Data View ViewModel Model Events Xamarin.Forms Data Binding
- 6. What is Xamarin.Forms? • UI condivisa – 40+ Pages, Layouts, Controls • Dichiarativa con XAML (standard 2009) – Two-way Data binding – Commands – Converters
- 7. What is Xamarin.Forms? • Navigation • Animation API • Dependency Service • Messaging Center • Custom Controls • Gesture Recognizers • Xamarin.Forms.Maps
- 8. iOS Android WP Xamarin.Forms • La UI è composta da controlli “platform-indipendent” • I controlli vengono “tradotti” nei controlli specifici Label UILabel TextView TextBlock LabelRenderer LabelRenderer LabelRenderer
- 9. DEMO
- 10. Riferimenti • Xamarin – http://www.xamarin.com – http://blog.xamarin.com – http://forums.xamarin.com • Il mio blog – http://www.fabiocozzolino.eu – @fabiocozzolino
Editor's Notes
- -Architectural pattern -testable -View -Perfect world = just what you see -ViewModel -What to display -What is going on behind the scenes -Data and events flow back and forth to and from view -Data binding -Commands -Model -Data objects -Business logic -SQLite database
- -Updating view / viewmodel based on changes -Xamarin.Forms adds support for this -seamless communication between the two