Cocoa Tutorials

What is Cocoa? A brief history of Cocoa.

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

The story of Cocoa starts with a delightful bit of history. Once upon a time, two guys named Steve started a company called Apple Computer in their garage. The company grew rapidly, so they hired an experienced executive named John Sculley to be its CEO. After a few conflicts, John Sculley moved Steve Jobs to a position in which he had no control over the company at all. Steve Jobs left to form another computer company, called NeXT Computer.
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Programming Language used in Cocoa Programming

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

Objective-C is a simple and elegant extension to C, and mastering it will take about two hours if you already know C and an object-oriented language, such as Java or C++.
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Tools for Cocoa Programming

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

All the tools for Cocoa development come as part of the Mac OS X Developer Tools, and you get them for free with Mac OS X. Although the developer tools will add about a dozen handy applications to your system, you will use primarily two applications: Xcode and Interface Builder. Behind the scenes, the GNU C compiler (gcc) will be used to compile your code, and the GNU debug
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Objects, Classes, Methods, and Messages in Cocoa Programming

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

What is an object? An object is like a C struct: It takes up memory and has variables inside it. The variables in an object are called instance variables. So when dealing with objects, the first questions we typically ask are: How do you allocate space for one? What instance variables does the object have? How do you destroy the object when you are done with it?
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Life Cycle of a Cocoa Application

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

Let's briefly discuss the chronology of an application: When the process is started, it runs the NSApplicationMain function, which creates an instance of NSApplication. The application object reads the main nib file and unarchives the objects inside. The objects are all sent the message awakeFromNib. Then the application object checks for events.
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Frameworks in Cocoa Programming

  • 2010-09-03
  • Comments
  • Aaron Hillegass
  • 559

A framework is a collection of classes that are intended to be used together. In other words, the classes are compiled together into a reusable library of code. Any related resources are put into a directory with the library. The directory is renamed with the extension .framework. You can find the built-in frameworks for your machine in /System/Library/Frameworks.
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Tools for Cocoa Programming

What is Cocoa? A brief history of Cocoa.

Programming Language used in Cocoa Programming

Objects, Classes, Methods, and Messages in Cocoa Programming

Frameworks in Cocoa Programming

Life Cycle of a Cocoa Application

Archived Comments

1. Sir, can i execute the program from windows enviro
View Tutorial          By: krishna at 2014-04-08 07:05:30

2. I used the script above, and it seems to work exce
View Tutorial          By: Michael at 2012-05-15 20:50:49

3. Just read the first page, It really attractive. Le
View Tutorial          By: Md. Sumon Bappi at 2015-05-13 10:47:00

4. Hi Everyone, i tried the code. im using Micromax
View Tutorial          By: adm at 2011-09-06 12:31:18

5. how to get only the year like 2012
View Tutorial          By: Iguster at 2012-01-27 22:20:32

6. nice one its very useful
View Tutorial          By: jhejhe at 2010-02-21 05:03:50

7. hi.. how can i extrate day, month, year from date
View Tutorial          By: avkash at 2010-10-03 05:19:58

8. I writing a main class in the eclipse IDE and call
View Tutorial          By: adam lim at 2013-03-11 04:13:51

9. dude its forces closes everytime what to do .....h
View Tutorial          By: raam at 2013-01-10 13:05:57

10. your code helps a lot.....
thanx......

View Tutorial          By: beh at 2009-08-19 06:06:20