1. Занятие 2
Views и ViewControllers

2. Кратко
• MVC
• Views и ViewControllers
• Xcode + IB demo
• Практика

3. MVC

4. MVC

5. MVC
Controller
Model View

6. MVC
Controller
get
Model View

7. MVC
Controller
get set
Model View

8. MVC
Controller
Model View

9. MVC
Controller
notify
Model View
event

10. MVC
process
Controller
set get
notify
Model View
event

11. MVC
Controller
Model View

12. MVC
process
Controller
notify
Model View
model change

13. MVC
process
Controller
get
notify
Model View
model change

14. MVC
process
Controller
get set
notify
Model View
model change

15. Cocoa
• Model – Order, OrderItem, NSArray...
• View - UIView
• Controller - UIViewController

16. UIView
UIViewController

17. UIView
UIWindow : UIVIew
• UIView UIView
UITextField : UIView
• subviews, superview UILabel : UIView
• UIWindow
• Controls - MobileHIG.pdf
• ViewPG
UIButton : UIView

18. UIViewController
• Создает View и добавляет его в subview
• Имеет доступ к модели
• Инициализирует контролы
• Получает уведомления о событиях view
• При обработке может считывать и
записывать информацию в контролы

19. UIViewController
UIWindow : UIVIew
UIViewController UIView
@property ... UIView *view UITextField : UIView
UILabel : UIView
CustomViewController
@property ... UITextField *tt
@property ... UILabel *label
... (void)actionMethod ...
UIButton : UIView
Order

20. UIViewController
• viewDidLoad
• viewDidUnload
• viewDidAppear
• viewDidDisappear

21. UIApplicationDelegate

22. UIApplicationDelegate
• application:didFinishLaunchingWithOptions
• applicationWillTerminate
• applicationWillResignActive
• applicationDidBecomeActive

23. DEMO

24. Xcode Interface Builder
SimpleViewController File’s Owner
IBOutlet ... firstNameTextField
IBOutlet ... lastNameTextField
View
First Name TextField
Last Name TextField

25. Xcode Interface Builder
class
SimpleViewController File’s Owner
IBOutlet ... firstNameTextField
IBOutlet ... lastNameTextField
View
First Name TextField
Last Name TextField

26. Xcode Interface Builder
class
SimpleViewController File’s Owner
IBOutlet ... firstNameTextField Outlets:
IBOutlet ... lastNameTextField firstNameTextField
lastNameTextField
View
First Name TextField
Last Name TextField

27. Xcode Interface Builder
class
SimpleViewController File’s Owner
IBOutlet ... firstNameTextField Outlets:
IBOutlet ... lastNameTextField firstNameTextField
lastNameTextField
View
First Name TextField
Last Name TextField

28. loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
IBOutlet ... firstNameTextField
IBOutlet ... lastNameTextField

29. loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
initWithNibName
IBOutlet ... firstNameTextField
IBOutlet ... lastNameTextField

30. loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
initWithNibName
IBOutlet ... firstNameTextField
view IBOutlet ... lastNameTextField

31. loadView
При первом обращении
вызывает loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
initWithNibName
IBOutlet ... firstNameTextField
view IBOutlet ... lastNameTextField

32. loadView
При первом обращении
вызывает loadView Дефолтная реализация
UIViewController загружает xib
- (UIView)view;
- (void)loadView; xib
View
textField
SimpleViewController textField
initWithNibName
IBOutlet ... firstNameTextField button
view IBOutlet ... lastNameTextField

33. loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
initWithNibName
view

34. loadView
UIViewController
- (UIView)view;
- (void)loadView;
SimpleViewController
initWithNibName
view

35. loadView
UIViewController
- (UIView)view;
- (void)loadView;
Переопределив loadView можно
SimpleViewController создать view программно
initWithNibName
- (void)loadView;
view

36. Кратко
• MVC
• Views и ViewControllers
• Xcode + IB demo

37. Практика
View Controller Programming Guide for iOS
• OrderViewController
• initWithOrder:(Order *)order;
• display first order item
• update button
• textResultLabel = [order description];

38. В следующей серии
• TableViewController
• NavigationViewContoller