1.
Introduction to mobile
development with Xamarin

2.
OCS Software
www.ocssoftwares.com
Director
OCS Software & Engineering Solutions Pvt Ltd
ullas1@gmail.com
Mob : +91 9495826939

3.
Mobile Development Approaches
OCS Software

4.
Basic Approach
Build Apps Multiple Times
• Multiple Teams
• Multiple Code Bases
• Different toolsets
OCS Software

5.
Write Once, Run Anywhere Approach
Black Box
• Mobile Web site
• PhoneGap/Cordova/Appcelerator/RhoMobile
OCS Software

6.
Write Once, Run Anywhere Approach
• Build a mobile version of an existing
Web site
• No apps to deploy to the stores
OCS Software

7.
Write Once, Run Anywhere Approach
• Use PhoneGap/Cordova with HTML5
• Basically, a native app with a Web
viewer displaying HTML5 pages
• Native look is simulated with CSS
• Apps are packaged as native apps

8.
Xamarin
www.xamarin.com
OCS Software

9.
1. Xamarin approach
OCS Software

10.
Xamarin’s Unique Approach
• Native User Interface
• Native Performance
• Shared code across platforms
• C# & .NET Framework
• Full API Coverage
OCS Software

11.
Xamarin History
Over a Decade of Enterprise Production Use
2000
Ximian
Founded
2001
Mono
Started
2003
Ximian
Acquired
by Novell
2009
First iOS
product (now
Xamarin.iOS)
launches
2011
Xamarin
Founded
First
Release of
Xamarin.Android
2012
First
release of
Xamarin.Mac
Launch
Partner
Program
2013
Xamarin 2.0
Component
Store
Evolve 2013
Xamarin Test
Cloud
Microsoft
Partnership
Reach 200,000
Developer
Mark
500,000+
Developers
100+ Partners
100+ Components
2014
Xamarin 3.0
Xamarin Forms
Evolve 2014
Insights
Simulator

12.
Microsoft and Xamarin Partner Globally
With Xamarin, developers combine all of the
productivity benefits of C#, Visual Studio 2013 and
Windows Azure with the flexibility to quickly build
for multiple device targets.”
S. Somasegar, Corporate Vice President, Microsoft
OCS Software

13.
Mobile Apps developed : Xamarin
OCS Software

14.
Why C#
• Shorter, Simpler, More Maintainable
• LINQ
• Lambdas
• Events
• Generics
• Async/Await
OCS Software

15.
Write Everything in C#
iOS, Android, Windows, Windows Phone, Mac
2.5+ Billion Devices!
OCS Software

16.
100% API Coverage
•Anything you can do in Objective-C or
Java can be done in C# and Visual
Studio with Xamarin!
Windows API Android API iOS API

17.
Xamarin.iOS does full Ahead Of Time
(AOT) compilation to produce an
ARM binary for Apple’s App Store.
Native Performance
Xamarin.Android takes advantage
of Just In Time (JIT) compilation on
the Android device.

18.
Code Sharing: Accelerate Development
Code-sharing stats from iCircuit, built with Xamarin and featured on the App Store.
Source: http://praeclarum.org/post/42378027611/icircuit-code-reuse-part-cinq
• Up to 90% Code Reuse
• Leverage existing libraries
NuGet Support
OCS Software

19.
Portable Class Libraries
• 1 Assembly
• Multiple Platforms
• Including:
• Xamarin.Android
• Xamarin.iOS
OCS Software

20.
Distribute Everywhere
A Xamarin app is an app, distribute it everywhere

21.
2 Xamarin UI approaches

22.
Platform Specific UI
• UI Is platform specific
• Tuned for each platform
• UI code is non sharable
• Best to get the optimal UI on
each platform
OCS Software

23.
Xamarin.Forms
• Cross-platform UI
toolkit abstraction
• Share UI code across
platforms
• Rendered natively on
each platform
• 95% code reuse
• OK for many apps styles
but not for everything
OCS Software

24.
Development Environment
Xamarin Studio
PC or Mac
Visual Studio Plugin
VS 2010/2012/2013

25.
Cost - Software
Cost per dev and per
device platform:
• iOS
• Android

26.
Cost - Hardware
• Android
Development can be done on Windows or Mac
• iOS
A Mac is required
Development can be done on a Windows
machine but compilation MUST be done on a
Mac
Compilation can be done on a networked Mac
OCS Software

27.
Cost – Hardware - Testing
•Cloud Test Solution
•Emulators are OK for
development
•But always test on
physical devices
OCS Software

28.
Xamarin Studio
• Optimized for cross-platform
mobile development
• Explore native APIs with code
completion
• World class Android and iOS
designers
• Powerful debugging on
simulator or device
OCS Software

29.
Android Designer
• Worlds best Android designer
• Available in:
• Xamarin Studio
• Visual Studio
• Create UI with drag & drop
simplicity
• Target multiple screen sizes,
resolutions and Android
versions
• Layouts saved in standard
Android XML files
OCS Software

30.
iOS Designer
• World’s first iOS Designer
available in Xamarin Studio
and Visual Studio
• Follows familiar Visual Studio
designer idioms
• Supports all UIKit elements
• Edit custom and 3rd party
components
• Live preview of changes to
properties
OCS Software

31.
Visual Studio Integration
A single solution:
• iOS
• Android
• Windows Phone
• Windows Store
Leverage the entire
Microsoft ecosystem:
• ReSharper
• Team Foundation Server
• Your favorite code coverage
and profiling tools
OCS Software

32.
Visual Studio Integration
Debug to:
• Emulators
• Devices
Integrated into toolbar
• Status
• Logs
• List of devices
Just Click Start Debugging!
OCS Software

33.
Xamarin benefits
• Xamarin enables developers to reach all major mobile platforms!
Native User Interface
Native Performance
Shared Code Across Platforms
C# & .NET Framework

34.
OCS Software
Questions ?