Video for this session: http://www.youtube.com/watch?v=LYhXuhMnke8 Give your feedback on the session: http://bit.ly/xamfeedback Complementing Mike's Getting Started with Mono Android Seminar, Mike walks us through the basics of beginning iPhone and iPad development with MonoTouch.

1. Getting Started with
MonoTouch
Building iOS Applications in C#
May 31, 2012
Copyright 2012 © Xamarin Inc. All rights reserved

2. Agenda
Introduction to MonoTouch
Mike Bluestein
Technical Writer
Xamarin Documentation Team
mike.bluestein@xamarin.com
@mikebluestein
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

3. Introduction
This session will cover the following:
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

4. Introduction
This session will cover the following:
Overview of MonoTouch
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

5. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

6. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
How it works
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

7. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
How it works
Additional libraries
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

8. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
How it works
Additional libraries
Tooling support
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

9. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
How it works
Additional libraries
Tooling support
Memory management
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

10. Introduction
This session will cover the following:
Overview of MonoTouch
What it supports
How it works
Additional libraries
Tooling support
Memory management
Demos
Xamarin
Copyright 2012 © Xamarin Inc. All rights reserved

11. What is MonoTouch?

12. What is MonoTouch?
• Platform for creating native iOS
applications using C#

13. What is MonoTouch?
• Platform for creating native iOS
applications using C#
• Supports App Store and Enterprise
Deployment

14. What is MonoTouch?
• Platform for creating native iOS
applications using C#
• Supports App Store and Enterprise
Deployment
• Ahead of Time Compiler

15. What is MonoTouch?
• Platform for creating native iOS
applications using C#
• Supports App Store and Enterprise
Deployment
• Ahead of Time Compiler
• Bindings to Objective-C classes

16. What is MonoTouch?

17. What is MonoTouch?
• Garbage Collection

18. What is MonoTouch?
• Garbage Collection
• MonoDevelop IDE

19. What is MonoTouch?
• Garbage Collection
• MonoDevelop IDE
• Debugger

20. What is MonoTouch?
• Garbage Collection
• MonoDevelop IDE
• Debugger
• Profiler

21. What is MonoTouch?
• Garbage Collection
• MonoDevelop IDE
• Debugger
• Profiler
• Unit Testing

22. App Store
• Thousands of MonoTouch apps published
• http://xamarin.com/apps
• Apple has featured MonoTouch apps

23. What do I need?

24. What do I need?
• Mac

25. What do I need?
• Mac
• iOS Developer account (iOS SDK)

26. What do I need?
• Mac
• iOS Developer account (iOS SDK)
• Xcode

27. What do I need?
• Mac
• iOS Developer account (iOS SDK)
• Xcode
• Mono, MonoDevelop, MonoTouch

28. What is supported?
• Native APIs
• Anything you can
do in Objective-C
• Additionally adds
.NET BCL

29. What is supported?

30. What is supported?
• LINQ

31. What is supported?
• LINQ
• Generics

32. What is supported?
• LINQ
• Generics
• Strong typing

33. What is supported?
• LINQ
• Generics
• Strong typing
• ADO.NET wrappers over SQLite

34. What is supported?
• LINQ
• Generics
• Strong typing
• ADO.NET wrappers over SQLite
• etc...

35. What is supported?
• LINQ
• Generics
• Strong typing
• ADO.NET wrappers over SQLite
• etc...
• Can port most non-UI code with little or
sometimes no code change

36. Cross-Platform

37. Xamarin.Mobile API

38. MonoTouch.Dialog

39. How does it work?

40. How does it work?
• MonoTouch uses Ahead-Of-Time
compilation to produce a single statically
compiled ARM binary

41. How does it work?
• MonoTouch uses Ahead-Of-Time
compilation to produce a single statically
compiled ARM binary
• AOT compilation pre-generates all the
native code that the JIT would normally
generate from IL

42. How does it work?
• MonoTouch uses Ahead-Of-Time
compilation to produce a single statically
compiled ARM binary
• AOT compilation pre-generates all the
native code that the JIT would normally
generate from IL
• Links this together with the JIT-less runtime
into a single native binary that can be
signed

43. How does it work?

44. How does it work?
• Apple does not allow JIT

45. How does it work?
• Apple does not allow JIT
• IL is stripped from the managed
assemblies, leaving only metadata

46. JIT-less Environment

47. JIT-less Environment
• Apple restricts this by policy and in kernel

48. JIT-less Environment
• Apple restricts this by policy and in kernel
• Eliminates some .NET areas

49. JIT-less Environment
• Apple restricts this by policy and in kernel
• Eliminates some .NET areas
• CodeDom, Reflection-Emit (although
reflection works),Virtual generic
methods, DLR

50. Memory Management

51. Memory Management
• .NET objects are garbage collected

52. Memory Management
• .NET objects are garbage collected
• Objective-C (on iOS) however uses retain
counts

53. Memory Management
• .NET objects are garbage collected
• Objective-C (on iOS) however uses retain
counts
• MonoTouch abstracts this away

54. Memory Management
• .NET objects are garbage collected
• Objective-C (on iOS) however uses retain
counts
• MonoTouch abstracts this away
• Creates autorelease pool for main thread
and thread pool

55. Memory Management
• .NET objects are garbage collected
• Objective-C (on iOS) however uses retain
counts
• MonoTouch abstracts this away
• Creates autorelease pool for main thread
and thread pool
• Create autorelease pool manually if using
Objective-C objects on your own threads

56. Xcode Integration

57. Xcode Integration
• Interface Builder from Apple previously was
a stand alone application

58. Xcode Integration
• Interface Builder from Apple previously was
a stand alone application
• Apple has now merged it into Xcode

59. Xcode Integration
• Interface Builder from Apple previously was
a stand alone application
• Apple has now merged it into Xcode
• MonoTouch supports Xcode’s integrated
Interface Builder

60. Demos

61. Books
Professional iPhone Programming with MonoTouch and .NET/C#
(7/13/2010)
by Wallace B. McClure, Craig Dunn, Chris Hardy, Martin Bowling,
Rory Blyth
Developing C# Apps for iPhone and iPad using MonoTouch: iOS Apps
Development for .NET Developers: 1st Edition (6/9/2011)
by Bryan Costanich
Learning MonoTouch: A Hands-On Guide to Building iOS Applications
with C# and .NET (8/8/2011)
by Michael Bluestein
iOS Development using MonoTouch Cookbook (12/14/2011)
by Dimitris Tavlikos

62. docs.xamarin.com/ios

63. Xamarin
Seminar
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