Advanced iOS 4 programming : developing mobile applications by Maher Ali

By Maher Ali

With Advanced iOS four Programming, builders have the specialist counsel they should create awesome functions for Apple's iPhone, iPad, and iPod contact.

Inside, veteran cellular developer Dr. Maher Ali starts off with a origin advent to aim C and Cocoa contact programming, after which publications readers via development apps with Apple's iPhone SDK four – together with assurance of the main different types of recent APIs and development apps for the recent Apple iPad.

This publication concentrates on illustrating GUI innovations programmatically, permitting readers to totally take pleasure in the whole photo of iOS four improvement with out hoping on Interface Builder. moreover, Interface Builder is roofed in different chapters.

Advanced iOS four Programming delves into extra complex subject matters going past the fundamentals of iOS four improvement, supplying accomplished assurance that can assist you get your apps to the App shop quicker.

Key positive factors include:

  • Objective-C programming language and runtime
  • Interface Builder
  • Building complex cellular consumer interfaces
  • Collections
  • Cocoa Touch
  • Core Animation and Quartz 2D
  • Model-view-controller (MVC) designs
  • Developing for the iPad
  • Grand valuable Dispatch
  • Parsing XML files utilizing SAX, DOM, and TouchXML
  • Working with the Map equipment API
  • Remote and native Push Notification
  • Blocks (closures) in Objective-C
  • Building complicated location-based applications
  • Developing database purposes utilizing the SQLite engine
  • GameKit framework

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That means that the caller will be able to modify the state of the Employee instance. In some cases, you might not want such a behavior. You might try to rewrite the getter yourself as -(NSArray*) achievements{ return achievements; } This, however, will not solve the problem because the returned reference, although made to be an immutable array, is still an NSMutableArray and can be changed by the caller. One solution to this problem is to return an autoreleased copy of the collection as follows: -(NSArray*) achievements{ return [[achievements copy] autorelease]; } This way, the caller will receive an immutable array.

Getter=getterName, setter=setterName. By default, the name of the automatically generated setter of a property, prob, is setProb, and the getter is prob. You can change this naming convention for the setter, the getter, or both. After declaring the property, you have two choices: (1) Ask the compiler to generate the getter/setter methods by using the @synthesize directive, or (2) implement the methods yourself by using the @dynamic directive. Let’s look at an example demonstrating these concepts.

Interface NSString(UIStringDrawing) - (CGSize)drawAtPoint:(CGPoint)point withFont:(UIFont *)font; - (CGSize)drawAtPoint:(CGPoint)point forWidth:(CGFloat)width withFont:(UIFont *)font lineBreakMode:(UILineBreakMode)lineBreakMode; ... 6 Posing Posing is part of the Objective-C language. Unfortunately, this feature is not available in iOS. 13 for metaprogramming techniques that can be used to realize posing. Posing is covered here for completeness. Posing is an Objective-C programming feature that allows you to swap one class, A, with another class, B.

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