iPhone development opens up a world of opportunities for developers that invest the time to learn this exciting platform. And Monotouch allows developers to create C# and .NET-based applications that run on the iPhone while taking advantage of the iPhone API’s and their existing libraries and skills. Experience a quick start to iPhone application development using the language and libraries that you are already familiar with, and prepare to learn something new about how to use what the iPhone API’s have to offer. Gain a solid understanding of the basics of iPhone development in .NET, and get up and running quickly building the next killer iPhone app.

1. Dev e lo p in g iP h o n e
A ppl i c a t i ons i n
Paul
Rayner
AGILITY.
CRAFT.
ARCHITECTURE.
Tuesday, March 16, 2010

2. Why the
iPhone?
Tuesday, March 16, 2010

3. Why the
iPhone?
Tuesday, March 16, 2010

4. Tools
Tuesday, March 16, 2010

5. Distributing Apps
Tuesday, March 16, 2010

6. Tuesday, March 16, 2010

7. MonoTouch Tools
Tuesday, March 16, 2010

8. MonoTouch Tools
Tuesday, March 16, 2010

9. MonoTouch Tools
Tuesday, March 16, 2010

10. Demo :: Getting Started
Tuesday, March 16, 2010

11. Demo :: Getting Started
Tuesday, March 16, 2010

12. iPhone Constraints
Tuesday, March 16, 2010

13. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
Tuesday, March 16, 2010

14. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
•Limited
resources
Tuesday, March 16, 2010

15. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
•Limited
resources
•Different
usage
pa8erns
Tuesday, March 16, 2010

16. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
•Limited
resources
•Different
usage
pa8erns
•Only
one
applica;on
can
run
at
a
;me
Tuesday, March 16, 2010

17. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
•Limited
resources
•Different
usage
pa8erns
•Only
one
applica;on
can
run
at
a
;me
•Handle
device
differences
gracefully
Tuesday, March 16, 2010

18. iPhone Constraints
•iPhone
apps
are
not
small
desktop
apps
•Limited
resources
•Different
usage
pa8erns
•Only
one
applica;on
can
run
at
a
;me
•Handle
device
differences
gracefully
•Devs:
No
JIT
compila;on,
no
scrip;ng
Tuesday, March 16, 2010

19. Cocoa & Objective-C
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
timeoutInterval:60.0];
Text
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

20. Cocoa & Objective-C
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
timeoutInterval:60.0];
Text
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

21. Cocoa & Objective-C
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
timeoutInterval:60.0];
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

22. Cocoa & Objective-C
•When
there
is
no
more
memory,
there
is
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
! !
no
more
memory
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
timeoutInterval:60.0];
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

23. Cocoa & Objective-C
•When
there
is
no
more
memory,
there
is
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
! !
no
more
memory
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
•No
automa3c
objects
on
the
stack.
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! !
timeoutInterval:60.0];
! ! ! ! ! ! ! ! ! ! ! ! !
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

24. Cocoa & Objective-C
•When
there
is
no
more
memory,
there
is
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
! !
no
more
memory
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
•No
automa3c
objects
on
the
stack.
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
•No
garbage
collector
(manual
memory
timeoutInterval:60.0];
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
management)
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

25. Cocoa & Objective-C
•When
there
is
no
more
memory,
there
is
! NSMutableURLRequest *theRequest = [NSMutableURLRequest
requestWithURL:[NSURL URLWithString:@"http://
! !
no
more
memory
virtualgenius:dummypassword@twitter.com/statuses/update.xml"]
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
•No
automa3c
objects
on
the
stack.
cachePolicy:NSURLRequestUseProtocolCachePolicy
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
•No
garbage
collector
(manual
memory
timeoutInterval:60.0];
! [theRequest setHTTPMethod:@"POST"];
! [theRequest setHTTPBody:[[NSString stringWithFormat:@"status=%@",
management)
themessage] dataUsingEncoding:NSASCIIStringEncoding]];
! NSURLResponse* response;
! NSError* error;
! NSData* result = [NSURLConnection sendSynchronousRequest:theRequest
returningResponse:&response error:&error];
! NSLog(@"%@", [[[NSString alloc] initWithData:result
encoding:NSASCIIStringEncoding] autorelease]);
Tuesday, March 16, 2010

26. MonoTouch Limitations
Tuesday, March 16, 2010

27. MonoTouch Limitations
•No
JIT
or
scrip3ng
Tuesday, March 16, 2010

28. MonoTouch Limitations
•No
JIT
or
scrip3ng
•No
code
gen
at
run3me
Tuesday, March 16, 2010

29. MonoTouch Limitations
•No
JIT
or
scrip3ng
•No
code
gen
at
run3me
System.Reflec3on.Emit
not
available
Tuesday, March 16, 2010

30. MonoTouch Limitations
•No
JIT
or
scrip3ng
•No
code
gen
at
run3me
System.Reflec3on.Emit
not
available
No
support
for
System.Run3me.Remo3ng
Tuesday, March 16, 2010

31. MonoTouch Limitations
•No
JIT
or
scrip3ng
•No
code
gen
at
run3me
System.Reflec3on.Emit
not
available
No
support
for
System.Run3me.Remo3ng
No
support
for
DLR
languages
(eg.
IronRuby,
IronPython)
Tuesday, March 16, 2010

32. MonoTouch Limitations
•No
JIT
or
scrip3ng
•No
code
gen
at
run3me
System.Reflec3on.Emit
not
available
No
support
for
System.Run3me.Remo3ng
No
support
for
DLR
languages
(eg.
IronRuby,
IronPython)
See
hJp://monotouch.net/Documenta3on/
Limita3ons
Tuesday, March 16, 2010

33. Sample App
Walkthrough
Tuesday, March 16, 2010

34. What’s Next?
15
Tuesday, March 16, 2010

35. What’s Next?
15
Tuesday, March 16, 2010

36. What’s Next?
15
Tuesday, March 16, 2010

37. What’s Next?
15
Tuesday, March 16, 2010

38. iPhone
development
is
challenging
Tuesday, March 16, 2010

39. iPhone
development
is
challenging
MonoTouch
==
Goodness
Tuesday, March 16, 2010

40. Questions
Tuesday, March 16, 2010

41. Resources
Tuesday, March 16, 2010

42. Resources
Tuesday, March 16, 2010

43. Resources
Tuesday, March 16, 2010

44. Resources
http://delicious.com/virtualgenius/monotouch
Tuesday, March 16, 2010

45. Thank You…
Paul
Rayner
paul@virtual-genius.com
www.virtual-genius.com
http://twitter.com/virtualgenius
AGILITY.
CRAFT.
ARCHITECTURE.
Tuesday, March 16, 2010

46. References
• http://www.amazon.com/Building-iPhone-Applications-Developer-
MonoTouch/dp/B003A6RCF2
• iPhone image: http://ke2yk.wordpress.com/2009/03/22/first-it-was-cw-
now-its-the-question-pool/
• iPhone sales chart: http://en.wikipedia.org/wiki/IPhone
• Monotouch home page: http://monotouch.net/
• MacBook Pro: http://www.apple.com/macbookpro/
• iPhone Dev Center Logo: http://developer.apple.com/iphone/index.action
• Mono logo: www.mono-project.net
• Objective C memory management: http://cocoadevcentral.com/d/
learn_objectivec/
• Microphone: http://www.faqs.org/photo-dict/phrase/377/microphone.html
• App store logo: http://www.apple.com/iphone/apps-for-iphone/
• Android developer logo: http://developer.android.com/index.html
• Head First iPhone Development: http://oreilly.com/catalog/9780596803551
Tuesday, March 16, 2010