Advanced iOS 4 Programming: Developing Mobile Applications by Maher Ali

By Maher Ali

With Advanced iOS four Programming, builders have the professional tips they should create extraordinary functions for Apple's iPhone, iPad, and iPod contact.

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

This ebook concentrates on illustrating GUI ideas programmatically, permitting readers to completely delight in the full photograph of iOS four improvement with no counting on Interface Builder. moreover, Interface Builder is roofed in numerous chapters.

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

Key positive aspects 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 critical 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 complex location-based applications
  • Developing database purposes utilizing the SQLite engine
  • GameKit framework

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Release memory } } -(void) insertRecord:(Record*) record{ @try { // open the file // seek // insert record } @catch (NSException * e) { // locally handle exception @throw; } @finally { //close file // release memory } } Here, we see the nested exceptions. If an exception occurs while accessing the file, that exception is caught in the insertRecord: method, dealt with locally, and rethrown. The addRecord: method has an exception handler that catches the rethrown exception. It creates a new exception, named MYDBException, and throws it.

In that section, you learn how to declare a new class, define it, and use it from within other classes. You also learn about important Cocoa classes and data types. 2 you learn about memory management in iOS. You learn how to create new objects as well as how to deallocate them, and you also learn your responsibility when obtaining objects from Cocoa frameworks or other frameworks. 3 introduces the topic of Objective-C protocols. There, you learn how to adopt protocols and how to declare new ones as well.

The reason we do that has nothing to do with our KVC example. name = theName The setter is assign (default), so we skip it and assign the instance variable directly. Be careful when you set instance variables inside your class. If you do not use self, you end up assigning the value rather than invoking the setter. Also, be careful when you implement the setter yourself. If, in your setter, you set the instance variable using self, you end up with an infinite loop, which results in a stack overflow and an application crash.

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