Introduction to RubyMotion by Gant Laborde - 2013 Live Presentation Link - http://gantman.github.io/RubyMotion-Intro/ Presentation Code - https://github.com/GantMan/RubyMotion-Intro

1. Introduction to RubyMotion
The Cool Way to Build iOS Apps
ByGantLaborde

2. @GantLaborde
Avid Rubyistand generallyimmature guy
Co-Founder of IconoclastLabs.com

3. Author of Numerous RubyMotion projects and PullRequests
Author of the book RubyMotion App Development
byPacktPublishing.

4. Motion Meetup Organizer
RubyMotion's MonthlyMeetup
meetup.RubyMotion.com

5. Matt Garrison
@mattsgarrison

6. RubyMotion

7. RubyMotion - Wat?
/ˈro ͞obē-mōSHən/
noun trademark
1. Aproprietarytoolchain, created byHipByte SPRL, for
developingnative iOS and OS X applications on Apple devices
and computers bystaticallycompilingthe Rubyprogramming
language.
OR
Apps the Ruby Way

8. Quick Example
Objective-C button tap
[button addTarget:self action:@selector(buttonTapped:)
forControlEvents: UIControlEventTouchUpInside];
// Elsewhere
- (void)buttonTapped:(id)sender {
self.view.backgroundColor = [UIColor redColor];
}
RubyMotion button tap
button.addTarget(self, action:'button_tapped',
forControlEvents:UIControlEventTouchUpInside)
# Elsewhere
def button_tapped
self.view.backgroundColor = UIColor.redColor
end

9. Better Example
Objective-C button tap
[button addTarget:self action:@selector(buttonTapped:)
forControlEvents: UIControlEventTouchUpInside];
// Elsewhere
- (void)buttonTapped:(id)sender {
self.view.backgroundColor = [UIColor redColor];
}
RubyMotion button tap (withsugarcubegem)
button.on(:touch) do
self.view.backgroundColor = :red.uicolor
end

10. and more like_ruby
lessLike:objectiveC:
-ClayAllsopp

11. What's So Great About RubyMotion?
In my opinion
Gems and Community
Editor Independence
Testing!
Readability
NativelyCompiled
The REPL

12. RubyMotion Analogy
RubyMotion is to Objective-C
As Coffeescriptis to Javascript
... plus gems are kind of like jQueryplugins
... plus MacBacon has spec tests like Jasmine would
... plus the REPL lets you live-modifylike developer tools
... plus itcompiles and obfuscates your finalcodebase
... OK, this analogygotoutof control

13. Let's Look At Code!
Classic -Hello World
FullApp -RubyTrivia
Games!

14. Hello World
$ motion create test
Tests willfail
class AppDelegate
def application(application, didFinishLaunchingWithOptions:launchOptions)
@window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
@window.rootViewController = HelloWorldController.new
@window.makeKeyAndVisible
true
end
end
class HelloWorldController < UIViewController
def viewDidLoad
p "Hai"
end
end
Now tests pass!

15. Hello World - REPL
main_view = UIApplication.sharedApplication.windows[0].rootViewController.view
main_view.backgroundColor = UIColor.blueColor
OR, justcommand click the view!
# REPL input
self.backgroundColor = UIColor.whiteColor
@label = UILabel.new
@label.text = "Hello World"
@label.sizeToFit
self.addSubview(@label)
# get down from there!
@label.center = [100, 100]
OR, use sugarcube-repl's tree command.

16. Code Example #2
Ruby Trivia
sugarcube
Teacup
ProMotion
BubbleWrap
formotion
and more ...

17. iconoclastlabs.github.io/rubytrivia/

18. Availableonitunes

19. Let's look at the code!

20. Code Example #3
Joybox

21. Joybox
joybox.io
Based on Cocos2D
Includes Box2D physics
Wrapped in RubyAPI
EASY

22. Joybox

23. Let's look at some Joybox code!
2:51

24. Totally Tacos!
Agame made in one day!

25. Thank you!
Questions?
@GantLaborde
Feelfree to contactme viaGant@IconoclastLabs.com