Binary Studio MEET FOR IT gatherings: 5th of March 2016 our meetup was devoted to .NET platform and took part in Lviv, Ukraine. ,

1. Cross-Platform Mobile Development
Introduction to Xamarin

2. Vitaly Ilchenko
.Net Developer

3. Agenda
1. What is Xamarin? How does it work?
2. Suitability for use in complex projects.
3. Difference between native approach and Xamarin on the real sample.
4. What about Xamarin.Forms?
5. Results

4. Native approach
iOS
App
Objective-C
XCode
Android
App
Java
Android Studio
Windows Phone
App
C#
Visual Studio

5. Xamarin approach
iOS
App
Android
App
Windows Phone
App
Shared C# Code
Xamarin Studio or Visual Studio

6. Xamarin approach
User Interface
App Layer
Core Library
Business Layer
Service Access Layer
Data Access Layer
User Interface
App Layer
User Interface
App Layer
~ 70-90%
reusable
code

7. iOS Project Android Project
Compilation
AOT
Compile
and
Link
ARM binary
Runs natively
.IPA .APK
IL + JIT
Mono runtime

8. What about complex enough projects?
Internet
BLE
Windows Server
ASP.Net
WCF
Web API
...

9. Let’s make the real app
Start Stop
Latitude: 0.0
Longitude: 0.0
Updated: 00:00:00
Already available at: https://github.com/ilchenkob/Xamarin.MeetForIt

10. Android Application
ServicesActivitiesResources
Drawable
Models and Data Objects
Layout
Menu
Values
Activity Service

11. iOS Application
ViewControllerModel
Application Delegate
View Controller
UIWindow
Views and UI Objects
UI Application
Data Objects
Documents

12. View View
Xamarin Application for iPhone and Android
iOS ProjectCore Project (PCL)
Android Project
Model
ViewModel
Model
Model
Service Interface
Activity
ViewController
Service Implementation
Service Implementation
AppDelegate
AndroidManifest.xml

13. .Net support
1. Stable support of all of the .Net framework 4.5 and C# 5.0
2. Support of C# 6.0 is already done but it’s unstable

14. Xamarin.Forms
Core Library
Business Layer
Service Access Layer
Data Access Layer
Shared UI Code in XAML
App
Layer
App
Layer
App
Layer
Core Library
Business Layer
Service Access Layer
Data Access Layer
App
Layer
App
Layer
App
Layer
UI Layer UI Layer UI Layer

15. Results
1. Xamarin gives you ability to create awesome cross-platform mobile
apps no worse than native tools gives.
2. Full support of .Net Framework 4.5 and C# 5.0 (stable support of
C# 6.0 currently in progress).
3. If you already has .Net backend, then you can reuse big part of
your code.
4. Xamarin.Forms is good but only if you don't have your own app
design.
5. Sample is already available at:
https://github.com/ilchenkob/Xamarin.MeetForIt

16. Any questions?