Download Advanced BlackBerry 6 Development by Chris King PDF

By Chris King

BlackBerry units and functions are promoting via the hundreds of thousands. As a BlackBerry developer, you wish a sophisticated ability set to effectively make the most the main compelling beneficial properties of the platform. This ebook might help you improve that ability set and train you the way to create the main refined BlackBerry courses attainable.

With Advanced BlackBerry 6 Development, you’ll get a entire examine the recent good points incorporated with SDK 6, together with the net and widgets SDK, the net browser, and extra. You’ll additionally how one can benefit from BlackBerry media features corresponding to the digital camera and video playback. The ebook additionally exhibits you the way to ship and obtain textual content and multimedia messages, use robust cryptography libraries, and fasten with the user’s own and company contacts and calendar.

not just will you be studying tips to use those APIs, yet you’ll even be development a application that takes complete benefit of them: a instant media-sharing app. each one chapter’s classes might be utilized by means of improving the app from a prototype to an absolutely polished application. alongside the best way, you will find out how to differentiate your product from different downloads via totally integrating with the hot BlackBerry 6 working approach. Your app will run within the browser and inside of machine menus, similar to software program that includes the telephone. you are going to even research BlackBerry's new net browser positive factors, internet standards-based software improvement equipment, and more.

when you are pleased with writing apps, this e-book will allow you to take them to the subsequent point. You’ll the best way to flow from working on one mobile to working on all telephones, and from one kingdom to all international locations. You’ll also the right way to help your clients with updates. No different source compares for studying the strategies wanted for professional improvement in this cellular platform.

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If it seems confusing to you, at present, please return to this discussion after reading Chapter 3. 2. The synthesized setter will assign an immutable copy to the mutable array instance variable. You will not be able to add/remove objects to/from this array. Therefore, you have to write the setter yourself. = newAchievements){ [achievements release]; achievements = [newAchievements mutableCopy]; } } Notice the use of the mutableCopy instead of the copy. Refer to Chapter 3 for further information on arrays and collections in general.

The fourth property declaration is: @property (nonatomic, copy) NSMutableArray* achievements When dealing with mutable collections such as NSMutableArray, the compiler-provided setter/getter might not be appropriate. Let us see a possible synthesis of the achievements property. = newAchievements){ [achievements release]; achievements = [newAchievements copy]; } } There are two problems with such a synthesis: 1. The caller of the getter will receive a reference to the actual achievements array. That means that the caller will be able to modify the state of the Employee instance.

NSString. This is the main class representing strings in Cocoa. Using this class, you can store an arbitrary text. However, once you store a value in an object of this type, you cannot change 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 represents Cocoa array objects. The mutable version of this class is NSMutableArray.

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