Agenda: What is Xamarin (aka. Xamarin.Forms) Our first app Deep dive Talk with REST Database Sync Mechanism History Started as Mono in 2001 Novell bought it in 2003 Attachmate bought it in 2011 Microsoft bought it in 2016 How it works (brief) C# has equivalent reference class For iOS, AOT compilation makes .ipa For Android, JIT makes .apk No Cordova type of magic here Pre-requisites Need to know any OOP language (Java/C# etc) Tools Visual Studio And a lot of spaces (30 to 40 GB)

1. Kickstart Android
Development with Xamarin
Build Native Apps using the power of C# with Visual Studio

2. Who am I
• Write C# and TypeScript (JavaScript)
Code wherever possible
• Make some contribution in Github
(https://github.com/foyzulkarim)
• Make some videos in YouTube
(https://www.youtube.com/foyzulka
rim)
• Write some technical post
(http://learn.foyzulkarim.com)
• Building SaaS Platform for local e-
commerce industry
(https://www.facebook.com/bizbook
365)
• Senior Software Engineer at Cefalo
• Founder and CEO at Code Coopers
What do I do

3. Agenda
• What is Xamarin (aka. Xamarin.Forms)
• Our first app
• Deep dive
• Talk with REST
• Database
• Sync Mechanism
To make you confidant and excited enough to start working on Xamarin on your own

4. Xamarin
• History
• Started as Mono in 2001
• Novell bought it in 2003
• Attachmate bought it in 2011
• Microsoft bought it in 2016
• How it works (brief)
• C# has equivalent reference class
• For iOS, AOT compilation makes .ipa
• For Android, JIT makes .apk
• No Cordova type of magic here
• Pre-requisites
• Need to know any OOP language (Java/C# etc)
• Tools
• Visual Studio
• And a lot of spaces (30 to 40 GB)

5. Our First App
• Start with defaults
• Lets run the app

6. MainActivity

7. App

8. Xamarin.Forms Previewer

9. What are these ‘gibberish’ things
• Pages : How the screens will be organized in top level
• Layouts: How the individual screen will be organized using controls
• Views: Simply its just controls
Everything (or almost everything) in Xamarin can be written in C#.
So you can skip XAML, MVVM etc. things if you don’t want to learn.

10. Pages

15. Layouts

20. Common Controls

25. What do I need to do
if I want to create a sign in page?

26. Steps
• A page
• A layout
• Some controls
• Add the page to the app
• Run

28. Demo (002 - App2 – signin)

29. Working with ListView
• Create a ListView instance
Magic

30. Working with ListView
• Create others

31. Working with ListView
• Add to the page

32. Last things
• OnAppearing
• Search

33. 003 - App2 - listview

34. What's next?
• Go to detail
• Load the data into stack layout
• Add the stack layout to the page
• Easy !!!

35. Talk with REST
• Install package
• Microsoft.AspNet.WebApi.Client
• Newtonsoft.Json

39. 004 - App2 - Signin

40. Load Brands from server

41. Load Brands
from server

42. 005 - App2 - REST

43. Database

44. • Convert the class library

46. BizMobileCore

47. Even more advanced???

48. Where to go from here?
• xamarin.com
• mva.microsoft.com
• Xamarin.Forms by Charles Petzold (Free)