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CS193P - Lecture 11iPhone Application Development
Text InputPresenting Content Modally
1Wednesday, February 10, 2010
Announcements• Paparazzi 3 assignment is due Wednesday 2/17• This Friday’s extra session will feature Evan Doll
2Wednesday, February 10, 2010
Today’s Topics• Threading Wrap-Up• iPhone Keyboards• Customizing Text Input• Presenting Content Modally
3Wednesday, February 10, 2010
NSOperation• Abstract superclass• Manages thread creation and lifecycle
• Encapsulate a unit of work in an object• Specify priorities and dependencies
5Wednesday, February 10, 2010
Creating an NSOperation Subclass• Define a custom init method
• Override -main method to do work
- (id)initWithSomeObject:(id)someObject{
self = [super init];if (self) {
self.someObject = someObject;}return self;
}
- (void)main{
[someObject doLotsOfTimeConsumingWork];}
6Wednesday, February 10, 2010
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
7Wednesday, February 10, 2010
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];}
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iPhone Keyboards
9Wednesday, February 10, 2010
Virtual keyboard Appears when needed
10Wednesday, February 10, 2010
Virtual keyboard Appears when needed
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Portrait and Landscape
13Wednesday, February 10, 2010
Simple selection modelText loupe/magnifier
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Many keyboard typesAdapted to task
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Many keyboard typesAdapted to task
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Many keyboard typesAdapted to task
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Many keyboard typesAdapted to task
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Many keyboard typesAdapted to task
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Many keyboard typesAdapted to task
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Single line editing
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Multi-line editing
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40Languages
Full dictionary support
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English
24Wednesday, February 10, 2010
French
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Russian
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Korean
27Wednesday, February 10, 2010
Japanese Romaji
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Japanese Kana
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Chinese Pinyin
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Chinese Handwriting
Simplified Traditional
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Customizing Text Input
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Text Containers
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Text Containers
DelegatesNotifications
Methods
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Text Containers
Text Input Traits
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Text Input Traits
ProtocolUITextFieldUITextView
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Text Input Traits
Autocapitalization
Autocorrection
Keyboard Type
Keyboard Appearance
Return Key Type
Return Key Autoenabling
Secure Text Entry
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URL KeyboardGo button
Text Input Traits
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Default KeyboardGoogle button
Text Input Traits
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Text ContainersText Input Traits
DelegatesNotifications
Methods
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Text Containers
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Design time
URL KeyboardGo button
UITextField
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Run time
URL KeyboardGo button
UITextField
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Become first responder
URL KeyboardGo button
UITextField
45Wednesday, February 10, 2010
Keyboard
Become first responder
URL KeyboardGo button
UITextField
45Wednesday, February 10, 2010
Keyboard
Become first responder
URL KeyboardGo button
UITextField
46Wednesday, February 10, 2010
Keyboard
Become first responder
URL KeyboardGo button
UITextField
46Wednesday, February 10, 2010
Keyboard
Keyboard adopts traits
URL KeyboardGo button
UITextFieldURL KeyboardGo button
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Keyboard
Keyboard adopts traits
URL KeyboardGo button
UITextFieldURL KeyboardGo button
47Wednesday, February 10, 2010
Text Containers
UITextField
UITextView
Web Forms
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Demo:Text Input
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Presenting Content Modally
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• For adding or picking data
Presenting Content Modally
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• For adding or picking data
Presenting Content Modally
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Presenting a View Controller// Recipe list view controller- (void)showAddRecipe {
RecipeAddViewController *viewController = ...;[self presentModalViewController:viewController animated:YES];
}
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Dismissing a View Controller// Recipe list view controller- (void)didAddRecipe {
[self dismissModalViewControllerAnimated:YES];}
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Dismissing a View Controller// Recipe list view controller- (void)didAddRecipe {
[self dismissModalViewControllerAnimated:YES];}
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Separate Navigation Stacks
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Separate Navigation Stacks
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Separate Navigation Stacks
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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
55Wednesday, February 10, 2010
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
55Wednesday, February 10, 2010
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
Present
55Wednesday, February 10, 2010
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!
55Wednesday, February 10, 2010
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
Dismiss
55Wednesday, February 10, 2010
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
55Wednesday, February 10, 2010
Demo:Presenting Content Modally
56Wednesday, February 10, 2010
Questions?
57Wednesday, February 10, 2010
