iOS Programming: The Big Nerd Ranch Guide (4th Edition) (Big Nerd Ranch Guides)

By Joe Conway, Aaron Hillegass, Christian Keur

Updated and improved to hide iOS 7 and Xcode five, iOS Programming: the large Nerd Ranch Guide leads you thru the fundamental options, instruments, and methods for constructing iOS functions. After finishing this publication, you have the information and the boldness you must take on iOS tasks of your personal. in response to Big Nerd Ranch's renowned iOS Bootcamp path and its well-tested fabrics and method, this bestselling advisor teaches iOS strategies and coding in tandem. the result's guide that's appropriate and useful.

in the course of the booklet, the authors clarify what is very important and percentage their insights into the bigger context of the iOS platform. You get a true realizing of the way iOS improvement works, the numerous positive factors which are to be had, and while and the place to use what you may have learned.

listed here are many of the themes coated:

  • Xcode five, tools, and Storyboards
  • development interfaces utilizing the iOS 7 aesthetic
  • ARC and robust and vulnerable references
  • dealing with contact occasions and gestures
  • Toolbars, navigation controllers, and break up view controllers
  • utilizing car format to scale consumer interfaces
  • utilizing Dynamic kind to scale fonts
  • Localization and Internationalization
  • Block syntax and use
  • Saving/loading information: Archiving and center Data
  • center situation and Map Kit
  • speaking with internet companies utilizing JSON
  • utilizing the Model-View-Controller-Store layout pattern

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The example variable generated through a estate, even though, does have an underscore in its identify. Let’s examine an instance. for those who declared the valuables named itemName, you were given an example variable named _itemName, a getter strategy named itemName, and a setter approach named setItemName:. (Note that those declarations won't seem on your dossier; they're declared by means of the compiler backstage. ) therefore, the remainder of the code on your program can paintings as ahead of. pointing out those homes additionally looks after the implementations of the accessors. In BNRItem. m, delete the accessor implementations. - (void)setItemName:(NSString *)str { _itemName = str; } - (NSString *)itemName { go back _itemName; } - (void)setSerialNumber:(NSString *)str { _serialNumber = str; } - (NSString *)serialNumber { go back _serialNumber; } - (void)setValueInDollars:(int)p { _valueInDollars = p; } - (int)valueInDollars { go back _valueInDollars; } - (NSDate *)dateCreated { go back _dateCreated; } - (void)setContainedItem:(BNRItem *)item { _containedItem = merchandise; // while given an merchandise to comprise, the contained // merchandise should be given a pointer to its box merchandise. box = self; } - (BNRItem *)containedItem { go back _containedItem; } - (void)setContainer:(BNRItem *)item { _container = merchandise; } - (BNRItem *)container { go back _container; } you will be brooding about in regards to the implementation of setContainedItem: that you simply deleted. This setter did greater than simply set the _containedItem example variable. It additionally set the _container example variable of the passed-in merchandise. to duplicate this performance, you are going to almost immediately write a customized setter for the containedItem estate. yet first, let’s talk about a few estate fundamentals. estate attributes A estate has a couple of attributes that let you adjust the habit of the accessor tools and the example variable it creates. The attributes are declared in parentheses after the @property directive. here's an instance: @property (nonatomic, readwrite, powerful) NSString *itemName; every one characteristic has a suite of attainable values, one among that is the default and doesn't must be explicitly declared. Multi-threading characteristic The multi-threading characteristic of a estate has values: nonatomic or atomic. (Multi-threading is open air the scope of this ebook, yet you continue to want to know the values for this characteristic. ) so much iOS programmers often use nonatomic. We do at gigantic Nerd Ranch, and so does Apple. during this e-book, you are going to use nonatomic for all homes. regrettably, the default price for this characteristic is atomic, so that you need to specify that you really want your houses to be nonatomic. In BNRItem. h, switch your entire homes to be nonatomic. @interface BNRItem : NSObject + (instancetype)randomItem; - (instancetype)initWithItemName:(NSString *)name valueInDollars:(int)value serialNumber:(NSString *)sNumber; - (instancetype)initWithItemName:(NSString *)name; @property (nonatomic) BNRItem *containedItem; @property (nonatomic) BNRItem *container; @property (nonatomic) NSString *itemName; @property (nonatomic) NSString *serialNumber; @property (nonatomic) int valueInDollars; @property (nonatomic) NSDate *dateCreated; @end Read/write characteristic The read/write attribute’s worth, readwrite or readonly, tells the compiler even if to enforce a setter strategy for the valuables.

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