1. Introduction to Xamarin
Good evening everyone.
Giving you a work welcome 
Introduction to Xamarin.
Our first session in Colombo Xamarin meet up.
Hope you guys will join with us in future tech talks also.
Please make this as a very interactive session.
I hope most of people are mobile engineers.
How many of mobile engineers, C#, .Net, Xamarin.
Introduction to Xamarin

2. About me I am Hiran Peiris…  I love Xamarin…  SSE – Mobile at CMS.
From iOS background.
5 years.
I do lot of cross platform mobile developments now.
Member of Colombo Xamarin Meetup - organizing team
I am hiran
Cross platform developments
Mainly in iOS, Titanium, Phone gap.
Now I do lot of Xamarin developments.
Member of Colombo Xamarin Meetup - organizing team
I am on Facebook, Linked, not using Twitter.
I am Hiran Peiris… 
I love Xamarin… 

3. Colombo Xamarin Meetup
This is our Colombo Xamarin Meetup page.
You can follow the link.
You can join with us there.
We will notice you about out next tech talks.
So, be in touch.
Next teach talk will be on Xamarin Forms. Mastering, Performance optimizing, Custom layouts.

4. agenda Introduction Xamarin compiler internals Xamarin for iOS
Xamarin for Android
Xamarin Forms
Custom renderers
Dependency services
Q/A
Please make this as a very interactive session.
But if you get any question in the middle. Please feel free to interrupt and ask.

5. Are you ready ?

6. Introduction

7. What is XamArin Xamarin is a Cross plaform Mobile technology.
Is that correct ?
No it support for Desktop app also. Mono. Mac.
C# 6.0

8. History Xamarin came from Mono Project (http://www.mono-project.com).
Linux, Mac, Windows.
Simler to .Net runtime.
Cross platform version of .Net runtime.
C# developers to write apps that’s runs many platforms.
Miguel de Icaza (Creator of Mono and CTO of Xamarin)

9. How it works ?

10. Compiler Internals
Question ?
How C# run in devices.
Architecture

11. Ported mono runtime to each of mobile platforms
Mono runtime has ported to mobile OS.

12. Mono runtime is there,
It talks to Darlvivk vertual machain. ART

13. Objc Reflections API.

14. App size ?

15. App size When developing Linker When publishing
Now you have a question about packaging

16. Xamarin for ios
Same API name.

17. iOS tutorial

18. Xamarin for Android
Same Api name.

19. Android tutorial

20. Not cross platform yet ?

21. Xamarin forms This is where the real Cross platform thing happen
Xamal language.
Like XML.
Its really eazy.
You will love it.

22. Forms tutorial

23. How Form controls works ?

24. Customize ?

25. Custom renderers
Can we customize Xamarin form controls ?

26. What is a custom renderer ?

27. custom renderer tutorial
Custom requirement

29. Forms control code

30. iOS control code

31. android control code

32. More custom functionalities ?

33. Dependency services
When you need something which doesn't support by Xamarin forms.
Lets say when you click a button you want to do a share action.

34. What is a dependency service ?
IOS Code for
FB Share
Form control
Execute
Android Code for
FB Share

36. Forms code

37. iOS code

38. android code

39. q/A

40. Thank you… 