![]() ![]() It’s useful, though, to have at least a basic understanding of Objective-C because Apple’s documentation and code samples are typically written in terms of this language.īecause Objective-C rests on a foundation of ANSI C, you can freely intermix straight C code with Objective-C code. You can also use some other languages-such as Python and Ruby-to develop programs using the Cocoa frameworks. Objective-C is the native language for Cocoa programming-it’s the language that the frameworks are written in, and the language that most applications are written in. Objective-C defines a small but powerful set of extensions to the ANSI C programming language that enables sophisticated object-oriented programming. Links to downloads and other resources may no longer be valid. When developing for either platform, you may also view the header files of a framework from within the Xcode application.This document may not represent best practices for current development. On OS X, you may browse the contents of a framework in the Finder. You may create your own frameworks for OS X, but third-party frameworks are not allowed on iOS. The system loads the code and resources of a framework into memory, as needed, and shares the one copy of a resource among all applications.īecause a framework is a bundle, you may access its contents using the NSBundle class or, for procedural code, CFBundle of Core Foundation. Because the library is dynamically shared, multiple applications can access the framework code and resources simultaneously. ![]() Your code accesses the capabilities of a framework through the application programming interface (API), which is published by the framework through its header files. For example, iPhone application projects link by default to the Foundation, UIKit, and Core Graphics frameworks. When you develop an application, your project links to one or more frameworks. ![]() FrameworkĪ framework is a bundle (a structured directory) that contains a dynamic shared library along with associated resources, such as nib files, image files, and header files. ![]() This document may not represent best practices for current development. ![]()
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