This is the second lecture in my mobile apps development course. This lectures consists of a very high level discussion of the tools needed to develop for iOS (e.g. Xcode). We also talk very briefly about iOS's Model/View/Controller architecture. The course is an intensive and very compressed deep dive into iOS development in Swift. Visit the course web page to get copies of the course outline, lecture notes, sample code, etc. Course website: http://www.themobilemontage.com/2015/05/12/ios-bootcamp-learning-to-create-awesome-apps-on-ios-using-swift/ YouTube Link to lecture: https://youtu.be/XchvSH4EYEk

1. XCODE / IOS OVERVIEW
Lecture 01
Jonathan R. Engelsma, Ph.D.

2. TOPICS
• TheTools - xCode and friends
• ModelView Controller (MVC) Architecture

3. XCODE
• The IDE:
• xCode is Apple’s IDE for iOS and Mac
development.
• Available as a free download on the Apple Mac
Store.
• Requires an Apple Mac computer to run!

4. XCODE FEATURES
• Integration with git (kind of lame)
• Autocompletion / syntax highlighting / code folding
• Fully integrated debugger
• Interface Builder to ease UI implementation.
• Support for deploying apps to AppStore

5. Editor
Library PaneDebug AreaNav Area
UtilityArea
Toolbar

6. INTERFACE BUILDER
https://developer.apple.com/xcode/interface-builder/

7. CREATING USER INTERFACES
• We have two options on iOS:
• Use “nib” files to instantiate UI:
• *.storyboard: Storyboards contains multiple screens
as well as the segues between them.
• *.xib: Contain a single screen layout.
• Programmatically create user interface.

8. WHICH APPROACH IS BEST?
• Storyboards are easiest to work with but…
• When multiple developers edit the same storyboard
simultaneously, merging those changes can be problematic.
• Many shops use *.xib’s and avoid *.storyboards.
• Highly custom user interfaces may avoid using nib
instantiated user-interfaces altogether! (Games, etc. )

9. XCODE DEBUGGER
https://developer.apple.com/library/ios/documentation/ToolsLanguages/Conceptual/Xcode_Overview/DebugYourApp.html

10. XCODE DEBUGGER
https://developer.apple.com/library/ios/documentation/ToolsLanguages/Conceptual/Xcode_Overview/DebugYourApp/DebugYourApp.html

11. THE IOS EMULATOR
• Allows you to execute app on your
computer.
• Can’t emulate all device features (e.g.
camera, bluetooth, accelerometer)
• Always test on a real device prior to
launch!

12. APPS / FORM FACTORS
• iPhone/iPodTouch Only
• iPad Only
• Universal: same binary supports
iPhone, iPodTouch and iPad.

13. design pattern = solution to a problem in a context
Source: http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/
CocoaFundamentals/CocoaDesignPatterns/CocoaDesignPatterns.html

14. MODELVIEW CONTROLLER

15. BUILDING / RUNNING
OUR FIRST IOS APP
DEMO!!