By Maher Ali
With Advanced iOS four Programming, builders have the professional information they should create striking functions for Apple's iPhone, iPad, and iPod touch.
Inside, veteran cellular developer Dr. Maher Ali starts off with a origin creation to goal C and Cocoa contact programming, after which courses readers via construction apps with Apple's iPhone SDK four – together with insurance of the most important different types of recent APIs and development apps for the hot Apple iPad.
This publication concentrates on illustrating GUI recommendations programmatically, permitting readers to completely enjoy the total photo of iOS four improvement with no 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, delivering entire assurance to help you get your apps to the App shop quicker.
Key gains include:
- Objective-C programming language and runtime
- Interface Builder
- Building complex cellular consumer interfaces
- Cocoa Touch
- Core Animation and Quartz 2D
- Model-view-controller (MVC) designs
- Developing for the iPad
- Grand imperative Dispatch
- Parsing XML files utilizing SAX, DOM, and TouchXML
- Working with the Map package 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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Extra resources for Advanced iOS 4 Programming: Developing Mobile Applications for Apple iPhone, iPad, and iPod touch
This notation can be difﬁcult to deal with at ﬁrst, but after a time it becomes natural. Methods in Objective-C are always public. There is no such thing as a private method. Instance variables default to protected, a setting that works well for you most of the time. 5 Important types We mentioned before that every class in a Cocoa application has a singleton class object. The type of this class object is Class. A null class pointer is of type Nil. Nil is basically (Class)0. We also mentioned that a class can be instantiated.
If 34 Advanced iOS 4 Programming you are not careful, the memory footprint of your application can keep growing until iOS terminates your application. In addition to being careful about releasing unused memory, you need to make sure that your object design does not introduce circular references. Circular references occur when two or more objects in a group hold references to other objects in the group such that the dealloc method of any of these objects will never be called. To illustrate this concept, we present a contrived example based on the design pattern of delegation.
Using this class, you can store an arbitrary text. However, once you store a value in an object of this type, you cannot change 24 Advanced iOS 4 Programming it. This kind of class is referred to as immutable. ), you need the mutable string class NSMutableString. You can create a constant string using the @ sign. For example, @"Plano" represents an NSString instance. • NSArray. Instances of this class represent Cocoa array objects. The mutable version of this class is NSMutableArray. 1 for more information on arrays in Cocoa.