Files

Project Files

.xib

MainWindow_iPhone.xib and MainWindow_iPad.xib contain the interface for your application. Double click to open in the interface builder.

.plist

ApName-Info.plist is the info property list which contains a list of the key-value pairs. These values specify things like the icon to display on the home screen, if the app needs a persistant WiFi connection, default language etc.

.h

Header files. Variables, methods etc declared in these.

.m

The code

MyAppName_Prefix.pch

Pre compiled header file. This is the global header file that is added to all project files. Use to add any global imports etc.

.nib

A xib file is compiled into a nib file which is what is actually run.

Bundle

The directory containing the executable and any resources the executable uses which is the output of the building the application.

#import (#include) and @class

In Objective-C #import is the same as standard C #include except that the file is only ever included once.

If you don’t want to import the header file for a class but want the compiler to know the class exists use ‘@class’ instead (much faster when compiling large projects):

@class SomeClassName;