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Introduction to mobile
development with Xamarin
OCS Software
www.ocssoftwares.com
Director
OCS Software & Engineering Solutions Pvt Ltd
ullas1@gmail.com
Mob : +91 9495826939
Mobile Development Approaches
OCS Software
Basic Approach
Build Apps Multiple Times
• Multiple Teams
• Multiple Code Bases
• Different toolsets
OCS Software
Write Once, Run Anywhere Approach
Black Box
• Mobile Web site
• PhoneGap/Cordova/Appcelerator/RhoMobile
OCS Software
Write Once, Run Anywhere Approach
• Build a mobile version of an existing
Web site
• No apps to deploy to the stores
OCS Software
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
Xamarin
www.xamarin.com
OCS Software
1. Xamarin approach
OCS Software
Xamarin’s Unique Approach
• Native User Interface
• Native Performance
• Shared code across platforms
• C# & .NET Framework
• Full API Coverage
OCS Software
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
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
Mobile Apps developed : Xamarin
OCS Software
Why C#
• Shorter, Simpler, More Maintainable
• LINQ
• Lambdas
• Events
• Generics
• Async/Await
OCS Software
Write Everything in C#
iOS, Android, Windows, Windows Phone, Mac
2.5+ Billion Devices!
OCS Software
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
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.
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
Portable Class Libraries
• 1 Assembly
• Multiple Platforms
• Including:
• Xamarin.Android
• Xamarin.iOS
OCS Software
Distribute Everywhere
A Xamarin app is an app, distribute it everywhere
2 Xamarin UI approaches
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
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
Development Environment
Xamarin Studio
PC or Mac
Visual Studio Plugin
VS 2010/2012/2013
Cost - Software
Cost per dev and per
device platform:
• iOS
• Android
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
Cost – Hardware - Testing
•Cloud Test Solution
•Emulators are OK for
development
•But always test on
physical devices
OCS Software
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
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
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
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
Visual Studio Integration
Debug to:
• Emulators
• Devices
Integrated into toolbar
• Status
• Logs
• List of devices
Just Click Start Debugging!
OCS Software
Xamarin benefits
• Xamarin enables developers to reach all major mobile platforms!
Native User Interface
Native Performance
Shared Code Across Platforms
C# & .NET Framework
OCS Software
Questions ?

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Hybrid Mobile App Development - Xamarin

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

Editor's Notes

  1. Xamarin Introduction!
  2. Let’s talk about the state of mobile development today
  3. Multiple Teams Multiple Code Bases Expensive & Slow Positive = Great apps delivered to user’s platform Negative = Development hampered by multiple code bases & fragmentation
  4. Unhappy Users Unhappy Developers Increase in Abandoned Apps Limited to what is implemented
  5. Let’s talk about the state of mobile development today
  6. Let’s talk about the state of mobile development today
  7. UI build natively per platform, leveraging C# C# + XAML C# + XML C# + XIB One shared app logic code base, iOS, Android, Mac, Windows Phone, Windows Store, Windows
  8. Full History of Xamarin
  9. Major announcement at the end of 2013: Truly Portable Class Libraries Support for VS 2013 Special offers for MSDN Subscribers 20 City Roadshow!
  10. Let’s talk about the state of mobile development today
  11. Take advantage of everything great about C# and now write code that can be shared across all platforms iOS Android, Mac Windows (WPF, Store, Phone, ASP.NET, etc)
  12. Xamarin offers 100% API coverage on iOS and Android If you want to do something specific on a platform it is all available NFC, iBeacon, WiFi, Bluetooth, you name it the API is available Xamarin beautiful bindings for every API in Android and iOS
  13. There is no compromise on performance. Xamarin apps look and feel native because they are native.
  14. iCircuit is made by Frank Krueger, a long time Mono & Xamarin developer. Sharing code lead to 70 to 90% code reuse across platforms speeding up development Real-time circuit simulator and editor used to design analog and digital circuits http://praeclarum.org/post/42378027611/icircuit-code-reuse-part-cinq
  15. Portable Class Libraries are awesome! You can write all of your C# code in one assembly and share across all platforms Before the Xamarin & Microsoft Partnership PCLs were limited ONLY to Windows Platforms Now add official support to create and use PCLs in Visual Studio and Xamarin Sudio
  16. Compiles down to APK or IPA that you can distribute anywhere, any store. Or even internal enterprise
  17. Let’s talk about the state of mobile development today
  18. UI build natively per platform, leveraging C# C# + XAML C# + XML C# + XIB One shared app logic code base, iOS, Android, Mac, Windows Phone, Windows Store, Windows
  19. Generates a full report of all method calls to determine compatibility with Xamarin.Android, Xamarin.iOS, Windows Phone, and Windows 8.
  20. Xamarin Studio PC -> Android Mac -> iOS, Android, Mac Visual Studio: iOS, Android Windows
  21. Xamarin Studio is available for Android development on the PC. Xamarin Studio on Mac offers: Android, iOS and Mac development World Class IDE with great features: Code Analysis Upload to Test Flight Git & Subversion Integration Code Completion Code Navigation Easy transition from Visual Studio The same Solution & Projects open in BOTH Xamarin Studio and Visual Studio!
  22. State of the art features: View different Themes View different device sizes Multi-view editing! Better than Android UI desginer
  23. Additionally Supports Visual Studio 2010, 2012, & of course 2013 Additionally support desktop apps on Windows: WPF, ASP.NET, Silverlight, WinForms! The same Solution & Projects open in BOTH Xamarin Studio and Visual Studio!
  24. Connect to Mac build host for iOS development Show list of all iOS devices and Simulators to debug on Shows all Android devices and emulators X86, Arm, Genymotion.. Take advantage of all debugging power of VS
  25. Let’s talk about the state of mobile development today