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

Transcription

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

2 Announcements Presence 3 assignment has been posted, due Tuesday 5/12 Final project proposals due on Monday 5/11

3 Announcements This week s bonus section with Steve Marmon! Discussing interface design for iphone apps! Will be available on itunes U

4 Today s Topics Using the Clang Static Analyzer to find bugs iphone Keyboards Customizing Text Input Presenting Content Modally

5 Finding Bugs with Clang Static Analyzer Tool for static analysis of C/Objective-C code Identifies potential bugs! Leaks! Using uninitalized or released variables! Missing dealloc method! More... Early in development, watch out for false positives 100% open source! More info at

6 Running the Clang Static Analyzer Clean build in Xcode first! Ensure that nothing gets left out From the command line in your project directory:! scan-build -k -V xcodebuild -configuration Debug -sdk iphonesimulator2.2! (Customize as needed) Results open up in Safari when completed!

7 Demo: Using the Clang Static Analyzer

8 iphone Keyboards

9 Virtual keyboard Appears when needed

10 Virtual keyboard Appears when needed

11 Portrait and Landscape

12 Simple selection model Text loupe/magnifier

13 Many keyboard types Adapted to task

14 Many keyboard types Adapted to task

15 Many keyboard types Adapted to task

16 Many keyboard types Adapted to task

17 Many keyboard types Adapted to task

18 Many keyboard types Adapted to task

19 Single line editing

20 Multi-line editing

21 20 Languages Full dictionary support

22 English

23 French

24 Russian

25 Korean

26 Japanese Romaji

27 Japanese Kana

28 Chinese Pinyin

29 Chinese Handwriting Simplified Traditional

30 Customizing Text Input

31 Text Containers

32 Text Containers Delegates Notifications Methods

33 Text Containers Text Input Traits

34 Protocol Text Input Traits UITextField UITextView

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

36 Text Input Traits URL Keyboard Go button

37 Text Input Traits Default Keyboard Google button

38 Text Containers Text Input Traits Delegates Notifications Methods

39 UITextField URL Keyboard Go button Design time

40 UITextField URL Keyboard Go button Run time

41 Keyboard UITextField URL Keyboard Go button Become first responder

42 Keyboard UITextField URL Keyboard Go button Become first responder

43 Keyboard URL Keyboard Go button UITextField URL Keyboard Go button Keyboard adopts traits

44 UITextField Text Containers UITextView Web Forms

45 Demo: Text Input

46 Presenting Content Modally

47 Presenting Content Modally For adding or picking data

48 Presenting a View Controller

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

50 Dismissing a View Controller

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

52 Separate Navigation Stacks

53 Separate Navigation Stacks

54 Separate Navigation Stacks

55 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

56 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

57 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!

58 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

59 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

60 Demo: Presenting Content Modally

61 Presence - Part 3

62 Goals for Presence 3 Avoid expensive work on the main thread! Use background threads to keep UI responsive! Abstract thread lifecycle with NSOperation & NSOperationQueue Allow the user to update their own status! Present a view controller modally! Customize text input traits on a UITextField! Use a delegate callback when finished

63 Questions?