By Maher Ali
With Advanced iOS four Programming, builders have the specialist information they should create remarkable functions for Apple's iPhone, iPad, and iPod contact.
Inside, veteran cellular developer Dr. Maher Ali starts with a starting place advent 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 main different types of recent APIs and development apps for the recent Apple iPad.
This publication concentrates on illustrating GUI techniques programmatically, permitting readers to completely relish the entire photograph of iOS four improvement with no hoping on Interface Builder. additionally, 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 accomplished insurance that can assist you get your apps to the App shop quicker.
Key good points include:
- Objective-C programming language and runtime
- Interface Builder
- Building complex cellular person 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 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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Additional resources for Advanced iOS 4 programming : developing mobile applications for Apple iPhone, iPad, and iPod touch
You enclose these statements in a finally block. But what is an exception and how it is signaled? An exception can be any Cocoa object. However, as a Cocoa developer, you should use NSException or any subclass of it. An exception is signaled by being thrown or raised. Objective-C provides the @throw directive for throwing an exception and the NSException class deﬁnes a raise instance method for raising an exception. Using the @throw directive, you can throw any Cocoa object, not just an instance of NSException.
An exception can be any Cocoa object. However, as a Cocoa developer, you should use NSException or any subclass of it. An exception is signaled by being thrown or raised. Objective-C provides the @throw directive for throwing an exception and the NSException class deﬁnes a raise instance method for raising an exception. Using the @throw directive, you can throw any Cocoa object, not just an instance of NSException. However, using the raise method, you can only throw an NSException object. Other than that, both techniques accomplish the same thing.
However, as we mentioned above, you should stick with NSException or any of its subclasses. Optionally, you can put in a finally block in any code that is required to be executed regardless of the occurrence of an exception. This code usually releases memory and closes opened ﬁles. You can optionally rethrow the exception to the next level on the call stack. You use the @throw directive to do that. You do not need to specify the exception object, however, as it is implied. Note that if you rethrow an exception, the @finally block gets executed before actually throwing the exception to the lower level.
Advanced iOS 4 programming : developing mobile applications for Apple iPhone, iPad, and iPod touch by Maher Ali