Presentation at ConFoo 2014 on iOS Development. Discussing the basic components of the iOS ecosystem and building a basic todo list manager app with Xcode and storyboards.
Biography Of Angeliki Cooney | Senior Vice President Life Sciences | Albany, ...
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First Steps in iOS Development
1. Sasha Goldshtein
CTO, SELA Group
@goldshtn
blog.sashag.net
First Steps in iOS
Development
Š Copyright SELA software & Education Labs Ltd. | 14-18 Baruch Hirsch St Bnei Brak, 51202 Israel | www.selagroup.com
2. The iOS Platform
Apps
⢠877,013+ of them ď
Cocoa
Touch
⢠UI, gestures, view
navigation, media
Core Services
⢠Location,
threading, HTTP
Darwin (kernel)
⢠Drivers,
security
3. Platform Philosophy
User
Developer
Apple
⢠Consistent
interface
metaphors
⢠Always at
home, on any
device and in
any app
⢠Seamless
sync, backup,
purchase
⢠Strong push
to object
orientation
⢠Just one
language
(Objective C)
⢠Strong
separation of
concerns in
UI â MVC
⢠Full control
over the
ecosystem,
hardware and
software
⢠Ultimate
arbitrator on
whether an
app is a fit for
the App Store
4. iOS Devices and Versions
September 2013:
â95% of iOS devices
run iOS 6
iPhone
3GS
⢠iOS 3
⢠iOS 4
Original
iPad
iPhone 5
iPhone
4/4S
⢠iOS 5
⢠iOS 6
iPhone
5c/5s
⢠iOS 7
8. Project Components
Generated files:
Application delegate
Initial view controller
Main storyboard
Property list
File for localizable strings
Application icons
Xcode also adds basic
frameworks to your app
9. iOS MVC Fundamentals
View
⢠Draws itself
on the
screen
⢠Contains
generic UIrelated data
View
Controller
⢠Creates and
coordinates
views
⢠Populates
views and
reflects
changes to
the model
Model
⢠UI-agnostic
classes
⢠Can be a
bunch of
objects, a
database, a
file, an
Internet
service
10. Outlets and Actions
Xcode connects views and controllers
Controller manipulates views through outlets
Controller receives events through actions
@interface MyViewController : UIViewController
@property (nonatomic, weak) IBOutlet UITextField *petName;
- (IBAction)getQuote;
@end