1. Developing Applications on iOS
September Francisco Ramos
2011 http://www3.uji.es/~jromero

2. Devices
Introduction to iOS
iOS Architecture
Developing Tools
Demos
Distribution

3. Devices
iPhone + iPod Touch
> 120 M devices sold
250.000 apps available
4.000 M downloads
AppStore: centralized
sells
Users very satisfied
Unexpected game
platform

4. Devices
iPad
3rd April 2010
Based on iOS
Many Accessories from Apple
Before distribution was a revolution
>
FIRST DAY: 300,000 units and 1M apps downl.
1 M units sold in 28 days
20.000 native Apps

5. Introduction to iOS
Operating System and Technologies
to create applications
for iPad, iPhone iPod touch

6. Introduction to iOS
Code
Information
Tools to:
develop, test and run apps on iOS

7. Introduction to iOS
Specific Components

8. Introduction to iOS
What can I do?
Web Apps
Native Apps

9. Introduction to iOS
What can I do?
Web
Make use of Safari Engine:
HTML+CSS+Javascript
Requires an active
connection
Natives
They are directly
installed in the device

10. Introduction to iOS
Web Apps A website that is
specifically optimized
for the iPhone

11. Introduction to iOS
Web Apps Cons and Pros
You cannot access the all cool Web developers can use their
hardware features of the phone current authoring tools
You can use your current web
You have to roll your own design and development skills
payment system if you want to
charge for the app You are not limited to
developing on the Mac OS
It can be difficult to achieve Your app will run on any device
sophisticated UI effects that has a web browser
You can fix bugs in real time
The development cycle is fast

12. Introduction to iOS
Native Apps Installed on the
iPhone
App Store

13. Introduction to iOS
Native Apps Cons and Pros
You have to pay to become an Millions of registered credit
Apple developer card owners are one click away
You are at the mercy of the Xcode, Interface Builder and
Apple approval process Cocoa Touch framework
You have to develop using constitute a pretty sweet
Objective-C development environment
You can access all the cool
You have to develop on a Mac
hardware features of the device
You can’t release bug fixes in a
timely fashion
Development cycle slow, testing
App Store limitations

14. Introducción a iOS
Using the Reference
Library
Thousand of documentation pages,
tutorials, code, and so on
Important be able to find the information
Xcode
Apple Developer

15. iOS
Architecture

16. iOS Architecture
Layers
Similar to MAC OS X

17. iOS Architecture
Cocoa Touch Layer
Infraestructure
fundamental for Apps:
•UIKit
•Windows
•Views
•Controls
•Foundation
•Collections
•File management

18. Cocoa Touch Layer
Features Frameworks
Multitasking
Data Protection Address Book UI
Local and Apple Push Event Kit UI
Notifications Game Kit
Recognize Gestures iAd
Shared files support Map Kit
Peer-to-Peer Server Message UI
View Controllers UIKit
External Displays Support

19. iOS Architecture
Media Layer
Support technologies for:
•2D and 3D rendering
•Audio
•Video
•Animación
C and Objective-C based

20. Media Layer
Features Frameworks
Assets Library
AV Foundation
Core Audio
Core Graphics
Graphics Technologies
Core Text
Audio Technologies
Core Video
Video Technologies
Image IO
Media Player
Open GL ES
Quartz Core

21. iOS Architecture
Core OS and Core Services
Fundamental Interfaces of
iOS:
•File access
•Basic data types
•Network sockets
•So on...
C-Based

22. iOS Developing Tools

23. iOS Developing Tools
Dashcode
Web Applications
Dual Develop
Assisted Design
Data Access
Debugging Tools

24. iOS Developing Tools
Web Inspector
In Safari and Dashcode
Objectives: debug and optimization
Several measures
Powerful
Intuitive

25. iOS Developing Tools
iPhone Simulator
WebKit
Native Applications
Multi-touch
Integrated Tools:
- Develop
- Debug
- Optimization

26. iOS Developing Tools
Native Applications
Xcode IDE on gcc and gdb
Templates
Settings Management

27. iOS Developing Tools
Interface Builder
GUI Design
WYSIWYG
Orientations Support
Standard Controls
Default Control Settings

28. iOS Developing Tools
Instruments
Performance Monitor
Debug (Memory Leaks)
Threads
Detail of Events
User-Specific Instruments
Both simulator and device

29. iOS Developing Tools
Objetive-C
Object Oriented
C Extension
Not so related to C++ (but compatible)
Inspired in Smalltalk
Java got many concepts from Objective-C

30. iOS Developing Tools
Objetive-C

31. iOS Developing Tools
Objetive-C: Class Definition
Estructuraden in two parts:
•Interface (@interface)
✦File .h
•Implementation (@implementation)
✦File .m (Objective-C) or .mm
(Objective-C++)

32. Distribution
iOS Developer University Program
• Free Program specifically designed for Universities
• Teams until 200 students
• Access to resources for the
development of Apps
• Test on hardware
(iPad, iPhone, iPod Touch)
• Sharing Apps among the
team members