iOS training (intermediate)

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iOS Training (Intermediate)

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Gurpreet SinghSriram Viswanathan

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Topics

Protocols and Delegates Categories and Selectors Views and View Controllers

Introduction to View Controllers Types of View Controllers

Hands on example for Creating a View Controller Manipulating Views Adding Content to Application

Working with Images Adding Simple Animation

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Protocols and Delegates

Protocol Protocols declare methods that others are expected to implement Similar to interfaces in other languages Protocol does not require .m file. Protocol can have @optional methods

Delegate It allows one object to delegate part of its behavior to be handled by

another object.

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Topics

Protocols and Delegates Categories and Selectors Views and View Controllers

Introduction to View Controllers Types of View Controllers

Hands on example for Creating a View Controller Manipulating Views Adding Content to Application

Working with Images Adding Simple Animation

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Categories and Selectors

Categories: Lets you add methods to class without having access original code Access instance variable but can't add new ones

@implementation NSString (NumericComparison)

- (NSComparisonResult) compareNumerically:(NSString *) compareWithString {

// ADD NUMERIC SORTING LOGIC HERE

}

@end

Selectors: Selector is a way of specifying a method to call

@selector(methodName)

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Topics

Protocols and Delegates Categories and Selectors Views and View Controllers

Introduction to View Controllers Types of View Controllers

Hands on example for Creating a View Controller Manipulating Views Adding Content to Application

Working with Images Adding Simple Animation

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Introduction to View Controllers

Link between application’s data and user interface View controllers are traditional controller objects in the MVC design

pattern Responsible for fetching/initializing models Every view controller that Apple provides extends from the

UIViewController class You Manage Your Content Using Content View Controllers

A content view controller presents content on the screen using a view or a group of views organized into a view hierarchy.

Container View Controllers Manage Other View Controllers A container view controller contains content owned by other view controllers.

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Introduction to View Controllers

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Every view is controlled by only one view controller. Each view controller interacts with a subset of your app’s data.

For example, the Photo controller needs to know only the photo to be displayed.

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Topics

Protocols and Delegates Categories and Selectors Views and View Controllers

Introduction to View Controllers Types of View Controllers

Hands on example for Creating a View Controller Manipulating Views Adding Content to Application

Working with Images Adding Simple Animation

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Types of View Controllers

Most commonly used UI View Controllers

UINavigationController

Navigation Controllers Manage Stacks of Other View Controllers

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Types of View Controllers

UITableViewController

Interesting features:• Lazy loading• Grouping

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Types of View Controllers

UITabBarController

Tab Bar Controllers Manage Independent Sets of View Controllers

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Types of View Controllers

UIPageViewController

Page View Controllers Manage Paged Display of View Controllers Apps can use a page view controller to present a paged view of content The page view controller itself manages the display of one or more content

view controllers, each of which provides a single page of content.

UISplitViewController

Split View Controllers Manage Two Panes of Information Apps can use a split view controller to manage two panes of information,

where both portions of the interface are themselves managed by view controllers.

This is interface is similar to a navigation controller, but it takes advantage of the larger screen size of iPad to present more content at a time.

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Types of View Controllers

View Controllers at a glance

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Topics

Protocols and Delegates Categories and Selectors Views and View Controllers

Introduction to View Controllers Types of View Controllers

Hands on example for Creating a View Controller Manipulating Views Adding Content to Application

Working with Images Adding Simple Animation

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