Announcements. Paparazzi 3 assignment is due Wednesday 2/17 This Friday s extra session will feature Evan Doll

Transcription

1 CS193P - Lecture 11 iphone Application Development Text Input Presenting Content Modally 1

2 Announcements Paparazzi 3 assignment is due Wednesday 2/17 This Friday s extra session will feature Evan Doll 2

3 Today s Topics Threading Wrap-Up iphone Keyboards Customizing Text Input Presenting Content Modally 3

4 NSOperation Abstract superclass Manages thread creation and lifecycle Encapsulate a unit of work in an object Specify priorities and dependencies 5

5 Creating an NSOperation Subclass Define a custom init method - (id)initwithsomeobject:(id)someobject { self = [super init]; if (self) { self.someobject = someobject; } return self; } Override -main method to do work - (void)main { [someobject dolotsoftimeconsumingwork]; } 6

6 NSOperationQueue Operations are typically scheduled by adding to a queue Choose a maximum number of concurrent operations Queue runs operations based on priority and dependencies 7

7 Using an NSInvocationOperation Concrete subclass of NSOperation For lightweight tasks where creating a subclass is overkill - (void)someaction:(id)sender { NSInvocationOperation *operation = [[NSInvocationOperation alloc] initwithtarget:self selector:@selector(dowork:) object:someobject]; [queue addobject:operation]; } [operation release]; 8

8 iphone Keyboards 9

9 Virtual keyboard Appears when needed 10

10 Virtual keyboard Appears when needed 11

11 12

12 Portrait and Landscape 13

13 Simple selection model Text loupe/magnifier 14

14 Many keyboard types Adapted to task 15

15 Many keyboard types Adapted to task 16

16 Many keyboard types Adapted to task 17

17 Many keyboard types Adapted to task 18

18 Many keyboard types Adapted to task 19

19 Many keyboard types Adapted to task 20

20 Single line editing 21

21 Multi-line editing 22

22 40 Languages Full dictionary support 23

23 English 24

24 French 25

25 Russian 26

26 Korean 27

27 Japanese Romaji 28

28 Japanese Kana 29

29 Chinese Pinyin 30

30 Chinese Handwriting Simplified Traditional 31

31 Customizing Text Input 32

32 Text Containers 33

33 Text Containers Delegates Notifications Methods 34

34 Text Containers Text Input Traits 35

35 Protocol Text Input Traits UITextField UITextView 36

36 Text Input Traits Autocapitalization Autocorrection Keyboard Type Keyboard Appearance Return Key Type Return Key Autoenabling Secure Text Entry 37

37 Text Input Traits URL Keyboard Go button 38

38 Text Input Traits Default Keyboard Google button 39

39 Text Containers Text Input Traits Delegates Notifications Methods 40

40 Text Containers 41

41 UITextField URL Keyboard Go button Design time 43

42 UITextField URL Keyboard Go button Run time 44

43 UITextField URL Keyboard Go button Become first responder 45

44 Keyboard UITextField URL Keyboard Go button Become first responder 45

45 Keyboard UITextField URL Keyboard Go button Become first responder 46

46 Keyboard UITextField URL Keyboard Go button Become first responder 46

47 Keyboard UITextField URL Keyboard Go button Keyboard adopts traits 47

48 Keyboard URL Keyboard Go button UITextField URL Keyboard Go button Keyboard adopts traits 47

49 UITextField Text Containers UITextView Web Forms 48

50 Demo: Text Input 49

51 Presenting Content Modally 50

52 Presenting Content Modally For adding or picking data 51

53 Presenting Content Modally For adding or picking data 51

54 Presenting a View Controller // Recipe list view controller - (void)showaddrecipe { RecipeAddViewController *viewcontroller =...; [self presentmodalviewcontroller:viewcontroller animated:yes]; } 52

55 Dismissing a View Controller // Recipe list view controller - (void)didaddrecipe { [self dismissmodalviewcontrolleranimated:yes]; } 53

56 Dismissing a View Controller // Recipe list view controller - (void)didaddrecipe { [self dismissmodalviewcontrolleranimated:yes]; } 53

57 Separate Navigation Stacks 54

58 Separate Navigation Stacks 54

59 Separate Navigation Stacks 54

60 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss 55

61 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss Parent Controller 55

62 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss Parent Controller Present Child Controller 55

63 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss Parent Controller Child Controller I m done! 55

64 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss Parent Controller Dismiss Child Controller 55

65 Dismissing a Modal View Controller Who should do it? Best practice is for the same object to call present and dismiss Define delegate methods for the presented controller Tell the delegate when the presented controller is done The delegate makes the call to dismiss Parent Controller 55

66 Demo: Presenting Content Modally 56

67 Questions? 57